https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612en-USTelligent Community 12https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612Mon, 06 Nov 2023 12:11:04 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcecstantonhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsCurrent Revision posted to Documents by cstanton on 11/6/2023 12:11:04 PM<br /> <p>Since the <a title="new 32-Bit Arduino Uno R4 has arrived" href="/products/devtools/product-pages/w/documents/28259/arduino-uno-r4-wifi" data-e14adj="t">new 32-Bit Arduino Uno R4 has arrived</a>, it is time to make a glorious farewell project to the <a title="classic 8-Bit UNO R3" href="/products/devtools/product-pages/w/documents/21448/arduino-uno-based-on-atmel-avr-atmega328-mcu" data-e14adj="t">classic 8-Bit UNO R3</a>, by using all the pins and turning it into a handheld&nbsp;BASIC computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and shows that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <h2><span>Can the Arduino&nbsp;UNO Function as a Computer?</span></h2> <p><span>Clem introduces us to the extraordinary world of the Arduino Uno R3 and its farewell project, reminding us that the microcontrollers we use on Arduinos are more than just components; they are real computers. Inspired by the possibilities, he embarks on a journey to create an Arduino Uno-based handheld computer that rivals the capabilities of the ZX-81.</span></p> <p><span><img style="max-height:360px;max-width:640px;" alt="TinyBASIC Plus v0.15" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_1.png" /></span></p> <h2 id="mcetoc_1h5pbb0u00"><span>The Hardware is more than BASIC</span></h2> <p><span>His project begins with Tiny Basic, a complete BASIC programming environment for Arduino. Tiny BASIC barely fits on an ATmega 238p on its own, so Clem utilizes a secondary chip to read the keyboard and drive the screen, offloading these tasks from the main processor running the operating system. This ensures that we have 1k of RAM left for writing programs (in the same ballpark as the Zx81). To make it fully portable, Clem incorporates a second processor to handle the keyboard and LCD screen, allowing the main microcontroller to focus solely on the operating system.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="CAD Screenshot" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_2.png" /></span></p> <h2 id="mcetoc_1h5pbcced1"><span>Even a BASIC Computer needs a Keyboard</span></h2> <p><span>With a custom PCB, Clem designs a badge-sized handheld computer. A tiny keyboard for the thumbs and a character LCD for text output complete the device. Throughout the process, Clem faces challenges in LED addressing and keyboard functionality but manages to get it all working.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="3D Printed Enclosure" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_3.png" /></span></p> <h2 id="mcetoc_1h5pbdb432"><span>Complimented by&nbsp;a 3D Printed Enclosure</span></h2> <p><span>The finished handheld computer badge is a testament to the power and versatility of the Arduino Uno R3. By utilizing all available pins and space on the chip, Clem successfully transforms the Arduino Uno into a handheld computer with capabilities like the ZX-81. The project serves as a fitting tribute to the beloved Arduino Uno R3 and showcases the potential for DIY electronics with microcontrollers.</span></p> <p><span>Creating this handheld computer badge exemplifies the essence of the Arduino community&mdash;innovation, exploration, and a passion for pushing the boundaries of what&#39;s possible with electronics.</span></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/m/files/147869" data-e14adj="t">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-fa0ff" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fa0ff'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-cb509" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cb509'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-8b47d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('8b47d'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-435bd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('435bd'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-7cfa1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7cfa1'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-7c07f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7c07f'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-605f3" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('605f3'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-a9a0f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a9a0f'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with <a title="MAYER MAKES ENGINEERING RESIN" href="https://mayermakes.at/engineering-resin/" rel="noopener noreferrer nofollow" target="_blank" data-e14adj="t">MAYER MAKES ENGINEERING RESIN</a></td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/" data-e14adj="t"><img loading="lazy" alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem" data-e14adj="t">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/" data-e14adj="t">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: sinclair, pocket computer, arduino uno, tiny BASIC, retro computer, uno r4, uno r3, zx81, 80s computer, arduino uno r3, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/6Fri, 21 Jul 2023 07:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fceMatthttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 6 posted to Documents by Matt on 7/21/2023 7:24:00 AM<br /> <p>Since the <a title="new 32-Bit Arduino Uno R4 has arrived" href="/products/devtools/product-pages/w/documents/28259/arduino-uno-r4-wifi" data-e14adj="t">new 32-Bit Arduino Uno R4 has arrived</a>, it is time to make a glorious farewell project to the <a title="classic 8-Bit UNO R3" href="/products/devtools/product-pages/w/documents/21448/arduino-uno-based-on-atmel-avr-atmega328-mcu" data-e14adj="t">classic 8-Bit UNO R3</a>, by using all the pins and turning it into a handheld&nbsp;BASIC computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and shows that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <h2><span>Can the Arduino&nbsp;UNO Function as a Computer?</span></h2> <p><span>Clem introduces us to the extraordinary world of the Arduino Uno R3 and its farewell project, reminding us that the microcontrollers we use on Arduinos are more than just components; they are real computers. Inspired by the possibilities, he embarks on a journey to create an Arduino Uno-based handheld computer that rivals the capabilities of the ZX-81.</span></p> <p><span><img style="max-height:360px;max-width:640px;" alt="TinyBASIC Plus v0.15" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_1.png" /></span></p> <h2 id="mcetoc_1h5pbb0u00"><span>The Hardware is more than BASIC</span></h2> <p><span>His project begins with Tiny Basic, a complete BASIC programming environment for Arduino. Tiny BASIC barely fits on an ATmega 238p on its own, so Clem utilizes a secondary chip to read the keyboard and drive the screen, offloading these tasks from the main processor running the operating system. This ensures that we have 1k of RAM left for writing programs (in the same ballpark as the Zx81). To make it fully portable, Clem incorporates a second processor to handle the keyboard and LCD screen, allowing the main microcontroller to focus solely on the operating system.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="CAD Screenshot" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_2.png" /></span></p> <h2 id="mcetoc_1h5pbcced1"><span>Even a BASIC Computer needs a Keyboard</span></h2> <p><span>With a custom PCB, Clem designs a badge-sized handheld computer. A tiny keyboard for the thumbs and a character LCD for text output complete the device. Throughout the process, Clem faces challenges in LED addressing and keyboard functionality but manages to get it all working.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="3D Printed Enclosure" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_3.png" /></span></p> <h2 id="mcetoc_1h5pbdb432"><span>Complimented by&nbsp;a 3D Printed Enclosure</span></h2> <p><span>The finished handheld computer badge is a testament to the power and versatility of the Arduino Uno R3. By utilizing all available pins and space on the chip, Clem successfully transforms the Arduino Uno into a handheld computer with capabilities like the ZX-81. The project serves as a fitting tribute to the beloved Arduino Uno R3 and showcases the potential for DIY electronics with microcontrollers.</span></p> <p><span>Creating this handheld computer badge exemplifies the essence of the Arduino community&mdash;innovation, exploration, and a passion for pushing the boundaries of what&#39;s possible with electronics.</span></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/147869" data-e14adj="t">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-0f126" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0f126'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-5dd8b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5dd8b'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-a8f17" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a8f17'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-91c03" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('91c03'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-baca7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('baca7'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-5fae4" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5fae4'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-9db2a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('9db2a'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-ba974" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ba974'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with <a title="MAYER MAKES ENGINEERING RESIN" href="https://mayermakes.at/engineering-resin/" rel="noopener noreferrer nofollow" target="_blank" data-e14adj="t">MAYER MAKES ENGINEERING RESIN</a></td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/" data-e14adj="t"><img loading="lazy" alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem" data-e14adj="t">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/" data-e14adj="t">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: sinclair, pocket computer, arduino uno, tiny BASIC, retro computer, uno r4, uno r3, zx81, 80s computer, arduino uno r3, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/4Thu, 20 Jul 2023 10:01:51 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcecstantonhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 4 posted to Documents by cstanton on 7/20/2023 10:01:51 AM<br /> <p>Since the <a title="new 32-Bit Arduino Uno R4 has arrived" href="/products/devtools/product-pages/w/documents/28259/arduino-uno-r4-wifi">new 32-Bit Arduino Uno R4 has arrived</a>, it is time to make a glorious farewell project to the <a title="classic 8-Bit UNO R3" href="/products/devtools/product-pages/w/documents/21448/arduino-uno-based-on-atmel-avr-atmega328-mcu">classic 8-Bit UNO R3</a>, by using all the pins and turning it into a handheld&nbsp;BASIC computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and shows that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <h2><span>Can the Arduino&nbsp;UNO Function as a Computer?</span></h2> <p><span>Clem introduces us to the extraordinary world of the Arduino Uno R3 and its farewell project, reminding us that the microcontrollers we use on Arduinos are more than just components; they are real computers. Inspired by the possibilities, he embarks on a journey to create an Arduino Uno-based handheld computer that rivals the capabilities of the ZX-81.</span></p> <p><span><img style="max-height:360px;max-width:640px;" alt="TinyBASIC Plus v0.15" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_1.png" /></span></p> <h2 id="mcetoc_1h5pbb0u00"><span>The Hardware is more than BASIC</span></h2> <p><span>His project begins with Tiny Basic, a complete BASIC programming environment for Arduino. Tiny BASIC barely fits on an ATmega 238p on its own, so Clem utilizes a secondary chip to read the keyboard and drive the screen, offloading these tasks from the main processor running the operating system. This ensures that we have 1k of RAM left for writing programs (in the same ballpark as the Zx81). To make it fully portable, Clem incorporates a second processor to handle the keyboard and LCD screen, allowing the main microcontroller to focus solely on the operating system.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="CAD Screenshot" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_2.png" /></span></p> <h2 id="mcetoc_1h5pbcced1"><span>Even a BASIC Computer needs a Keyboard</span></h2> <p><span>With a custom PCB, Clem designs a badge-sized handheld computer. A tiny keyboard for the thumbs and a character LCD for text output complete the device. Throughout the process, Clem faces challenges in LED addressing and keyboard functionality but manages to get it all working.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="3D Printed Enclosure" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_3.png" /></span></p> <h2 id="mcetoc_1h5pbdb432"><span>Complimented by&nbsp;a 3D Printed Enclosure</span></h2> <p><span>The finished handheld computer badge is a testament to the power and versatility of the Arduino Uno R3. By utilizing all available pins and space on the chip, Clem successfully transforms the Arduino Uno into a handheld computer with capabilities like the ZX-81. The project serves as a fitting tribute to the beloved Arduino Uno R3 and showcases the potential for DIY electronics with microcontrollers.</span></p> <p><span>Creating this handheld computer badge exemplifies the essence of the Arduino community&mdash;innovation, exploration, and a passion for pushing the boundaries of what&#39;s possible with electronics.</span></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/147869">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-63b2e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('63b2e'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-aa218" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('aa218'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-912fa" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('912fa'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-1b748" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1b748'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-b6733" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b6733'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-33ff8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('33ff8'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-a2d60" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a2d60'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-6dbcd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('6dbcd'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with <a title="MAYER MAKES ENGINEERING RESIN" href="https://mayermakes.at/engineering-resin/" rel="noopener noreferrer" target="_blank">MAYER MAKES ENGINEERING RESIN</a></td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img loading="lazy" alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: sinclair, pocket computer, arduino uno, tiny BASIC, retro computer, uno r4, uno r3, zx81, 80s computer, arduino uno r3, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/5Thu, 20 Jul 2023 10:01:51 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcecstantonhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 5 posted to Documents by cstanton on 7/20/2023 10:01:51 AM<br /> <p>Since the <a title="new 32-Bit Arduino Uno R4 has arrived" href="/products/devtools/product-pages/w/documents/28259/arduino-uno-r4-wifi">new 32-Bit Arduino Uno R4 has arrived</a>, it is time to make a glorious farewell project to the <a title="classic 8-Bit UNO R3" href="/products/devtools/product-pages/w/documents/21448/arduino-uno-based-on-atmel-avr-atmega328-mcu">classic 8-Bit UNO R3</a>, by using all the pins and turning it into a handheld&nbsp;BASIC computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and shows that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <h2><span>Can the Arduino&nbsp;UNO Function as a Computer?</span></h2> <p><span>Clem introduces us to the extraordinary world of the Arduino Uno R3 and its farewell project, reminding us that the microcontrollers we use on Arduinos are more than just components; they are real computers. Inspired by the possibilities, he embarks on a journey to create an Arduino Uno-based handheld computer that rivals the capabilities of the ZX-81.</span></p> <p><span><img style="max-height:360px;max-width:640px;" alt="TinyBASIC Plus v0.15" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_1.png" /></span></p> <h2 id="mcetoc_1h5pbb0u00"><span>The Hardware is more than BASIC</span></h2> <p><span>His project begins with Tiny Basic, a complete BASIC programming environment for Arduino. Tiny BASIC barely fits on an ATmega 238p on its own, so Clem utilizes a secondary chip to read the keyboard and drive the screen, offloading these tasks from the main processor running the operating system. This ensures that we have 1k of RAM left for writing programs (in the same ballpark as the Zx81). To make it fully portable, Clem incorporates a second processor to handle the keyboard and LCD screen, allowing the main microcontroller to focus solely on the operating system.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="CAD Screenshot" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_2.png" /></span></p> <h2 id="mcetoc_1h5pbcced1"><span>Even a BASIC Computer needs a Keyboard</span></h2> <p><span>With a custom PCB, Clem designs a badge-sized handheld computer. A tiny keyboard for the thumbs and a character LCD for text output complete the device. Throughout the process, Clem faces challenges in LED addressing and keyboard functionality but manages to get it all working.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="3D Printed Enclosure" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-03-81/612_2D00_snapshot_2D00_3.png" /></span></p> <h2 id="mcetoc_1h5pbdb432"><span>Complimented by&nbsp;a 3D Printed Enclosure</span></h2> <p><span>The finished handheld computer badge is a testament to the power and versatility of the Arduino Uno R3. By utilizing all available pins and space on the chip, Clem successfully transforms the Arduino Uno into a handheld computer with capabilities like the ZX-81. The project serves as a fitting tribute to the beloved Arduino Uno R3 and showcases the potential for DIY electronics with microcontrollers.</span></p> <p><span>Creating this handheld computer badge exemplifies the essence of the Arduino community&mdash;innovation, exploration, and a passion for pushing the boundaries of what&#39;s possible with electronics.</span></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/147869">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-cf186" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cf186'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-af6c7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('af6c7'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-b572f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b572f'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-f148d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f148d'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-df4a7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('df4a7'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-bc792" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('bc792'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-83f39" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('83f39'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-67a63" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('67a63'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with <a title="MAYER MAKES ENGINEERING RESIN" href="https://mayermakes.at/engineering-resin/" rel="noopener noreferrer" target="_blank">MAYER MAKES ENGINEERING RESIN</a></td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img loading="lazy" alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: sinclair, pocket computer, arduino uno, tiny BASIC, retro computer, uno r4, uno r3, zx81, 80s computer, arduino uno r3, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/3Thu, 20 Jul 2023 09:52:24 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcecstantonhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 3 posted to Documents by cstanton on 7/20/2023 9:52:24 AM<br /> <p>Since the <a title="new 32-Bit Arduino Uno R4 has arrived" href="/products/devtools/product-pages/w/documents/28259/arduino-uno-r4-wifi">new 32-Bit Arduino Uno R4 has arrived</a>, it is time to make a glorious farewell project to the <a title="classic 8-Bit UNO R3" href="/products/devtools/product-pages/w/documents/21448/arduino-uno-based-on-atmel-avr-atmega328-mcu">classic 8-Bit UNO R3</a>, by using all the pins and turning it into a handheld&nbsp;BASIC computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and shows that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <p><span>Clem introduces us to the extraordinary world of the Arduino Uno R3 and its farewell project, reminding us that the microcontrollers we use on Arduinos are more than just components; they are real computers. Inspired by the possibilities, he embarks on a journey to create an Arduino Uno-based handheld computer that rivals the capabilities of the ZX-81.</span></p> <p><span><img style="max-height:360px;max-width:640px;" alt="TinyBASIC Plus v0.15" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_1.png" /></span></p> <h2 id="mcetoc_1h5pbb0u00"><span>The Hardware is more than BASIC</span></h2> <p><span>His project begins with Tiny Basic, a complete BASIC programming environment for Arduino. Tiny BASIC barely fits on an ATmega 238p on its own, so Clem utilizes a secondary chip to read the keyboard and drive the screen, offloading these tasks from the main processor running the operating system. This ensures that we have 1k of RAM left for writing programs (in the same ballpark as the Zx81). To make it fully portable, Clem incorporates a second processor to handle the keyboard and LCD screen, allowing the main microcontroller to focus solely on the operating system.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="CAD Screenshot" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_2.png" /></span></p> <h2 id="mcetoc_1h5pbcced1"><span>Even a BASIC Computer needs a Keyboard</span></h2> <p><span>With a custom PCB, Clem designs a badge-sized handheld computer. A tiny keyboard for the thumbs and a character LCD for text output complete the device. Throughout the process, Clem faces challenges in LED addressing and keyboard functionality but manages to get it all working.</span></p> <p><span><img loading="lazy" style="max-height:360px;max-width:640px;" alt="3D Printed Enclosure" src="/resized-image/__size/1280x720/__key/communityserver-wikis-components-files/00-00-00-04-35/612_2D00_snapshot_2D00_3.png" /></span></p> <h2 id="mcetoc_1h5pbdb432"><span>Complimented by&nbsp;a 3D Printed Enclosure</span></h2> <p><span>The finished handheld computer badge is a testament to the power and versatility of the Arduino Uno R3. By utilizing all available pins and space on the chip, Clem successfully transforms the Arduino Uno into a handheld computer with capabilities like the ZX-81. The project serves as a fitting tribute to the beloved Arduino Uno R3 and showcases the potential for DIY electronics with microcontrollers.</span></p> <p><span>Creating this handheld computer badge exemplifies the essence of the Arduino community&mdash;innovation, exploration, and a passion for pushing the boundaries of what&#39;s possible with electronics.</span></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/147869">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-958f6" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('958f6'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-72210" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('72210'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-a1c3f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a1c3f'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-f58e9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f58e9'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-eb525" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('eb525'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-99409" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('99409'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-0b8dc" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0b8dc'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-cbcb0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cbcb0'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with <a title="MAYER MAKES ENGINEERING RESIN" href="https://mayermakes.at/engineering-resin/" rel="noopener noreferrer" target="_blank">MAYER MAKES ENGINEERING RESIN</a></td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img loading="lazy" alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: sinclair, pocket computer, arduino uno, tiny BASIC, retro computer, uno r4, uno r3, zx81, 80s computer, arduino uno r3, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/2Wed, 19 Jul 2023 16:53:42 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcetariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 2 posted to Documents by tariq.ahmad on 7/19/2023 4:53:42 PM<br /> <p>Since the new 32-Bit Arduino Uno R4 has arrived, it is time to make a glorious farewell project to the classic 8-Bit UNO R3, by using all the pins and turning it into a handheld Basic computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and show that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li><a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/147869">Download Code and CAD Files!</a></li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-a118c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a118c'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-eeba9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('eeba9'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-ef1d2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ef1d2'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-419f8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('419f8'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-48b53" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('48b53'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-b8c97" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b8c97'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-44992" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('44992'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-4541b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4541b'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with MAYER MAKES ENGINEERING RESIN</td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: pocket computer, arduino uno, retro computer, uno r4, uno r3, zx81, 80s computer, friday_release, e14p_CMM, basic computer</div> https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612/revision/1Wed, 19 Jul 2023 16:47:06 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b972d74c-43ff-4854-ace9-b0b928e46fcetariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/28271/handheld-basic-computer-in-badge-format-with-the-arduino-uno----episode-612#commentsRevision 1 posted to Documents by tariq.ahmad on 7/19/2023 4:47:06 PM<br /> <p>Since the new 32-Bit Arduino Uno R4 has arrived, it is time to make a glorious farewell project to the classic 8-Bit UNO R3, by using all the pins and turning it into a handheld Basic computer, quite similar to a ZX81 from the 80s! It is finally time to build a badge that uses up all the pins and show that an 8-Bit microcontroller is in fact a tiny computer!&nbsp;The badge form factor makes it ideal for your next meetup with fellow makers!</p> <h3 id="mcetoc_1h5neljns2">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=_9Nl1EnGxWk&amp;feature=youtu.be">www.youtube.com/watch</a></p> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331482087112">players.brightcove.net/.../index.html</a></p> <h3 id="mcetoc_1h5ng3n1a3">Bonus Content:</h3> <ul> <li>Download Code and CAD Files!</li> </ul> <p><a href="https://players.brightcove.net/1362235890001/default_default/index.html?videoId=6331478115112">players.brightcove.net/.../index.html</a></p> <p></p> <h3 id="mcetoc_1h5nei7240">Bill of Material:</h3> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-d4c66" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2&nsku=77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d4c66'));" data-farnell="4208543,2674164,3796319~55,2435161~50,1715486~2,9713662~2,1578407~2" data-newark="77AK2286,02AC9720,4208543~55,35AH5237~50,68T2935~2,97K2974~2,08N6477~2" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~55,undefined~50,undefined~2,undefined~2,undefined~2" >Buy Kit</a> </th> </tr> <tr> <td>Arduino uno R4 minima</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-04687" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=4208543&nsku=77AK2286&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('04687'));" data-farnell="4208543" data-newark="77AK2286" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>FORDATA Alphanumeric LCD, 20 x 4, Black on Yellow / Green, 5V, English, Euro, Transflective</td> <td>FORDATA</td> <td>1</td> <td><a id="e14-product-link-99d45" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2674164&nsku=02AC9720&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('99d45'));" data-farnell="2674164" data-newark="02AC9720" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO LED, Green, SMD, 0603 [1608 Metric], 20 mA, 2.3 V, 577 nm</td> <td>MULTICOMP PRO</td> <td>55</td> <td><a id="e14-product-link-7da26" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3796319&nsku=4208543&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7da26'));" data-farnell="3796319" data-newark="4208543" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>C&amp;K COMPONENTS Tactile Switch, PTS645 Series, Top Actuated, Through Hole, Round Button, 130 gf, 50mA at 12VDC</td> <td>C&amp;K COMPONENTS</td> <td>50</td> <td><a id="e14-product-link-241c4" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2435161&nsku=35AH5237&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('241c4'));" data-farnell="2435161" data-newark="35AH5237" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP 8 Bit MCU, AVR ATmega Family ATmega328 Series Microcontrollers, AVR, 20 MHz, 32 KB, 32 Pins, TQFP</td> <td>Microchip</td> <td>2</td> <td><a id="e14-product-link-f0b23" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1715486&nsku=68T2935&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f0b23'));" data-farnell="1715486" data-newark="68T2935" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>IQD FREQUENCY PRODUCTS Oscillator, Crystal, 16 MHz, 50 ppm, SMD, 7mm x 5mm, 5 V, CFPS-72 Series</td> <td>IQD FREQUENCY PRODUCTS</td> <td>2</td> <td><a id="e14-product-link-a5e01" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9713662&nsku=97K2974&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a5e01'));" data-farnell="9713662" data-newark="97K2974" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MICROCHIP Fixed LDO Voltage Regulator, 2.1V to 6V, 210mV Dropout, 5Vout, 500mAout, SOT-223-3</td> <td>MICROCHIP</td> <td>2</td> <td> <p><a id="e14-product-link-24237" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1578407&nsku=08N6477&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('24237'));" data-farnell="1578407" data-newark="08N6477" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </p> <p></p> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <h3 id="mcetoc_1h5nej8kr1">Additional Products:</h3> <table> <tbody> <tr> <td>CASE 3d printed with MAYER MAKES ENGINEERING RESIN</td> </tr> <tr> <td>+ Blue dye</td> </tr> </tbody> </table> <p></p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"></div> <div style="display:inline-block;vertical-align:top;width:70%;"><br /> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3692/vcp-biography-clem">About Clem</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: pocket computer, arduino uno, retro computer, uno r4, uno r3, zx81, 80s computer, friday_release, e14p_CMM, basic computer</div>