<?xml-stylesheet type="text/xsl" href="https://community.element14.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Tempus Fugit... Part 3: micro:bit Interfacing 5V Logic</title><link>/challenges-projects/project14/smartalarmclock/b/blog/posts/tempus-fugit-part-3-micro-bit-interfacing-5v-logic</link><description>Introduction 
 Providing 5V Extra Power 
 Interfacing 3V Logic to 5V Logic 

 micro:bit Output Pin 
 Open Collector Output Pin 


 The Other Parts 




Introduction
To control the 7-segments LCD display with the micro:bit the easiest way I found is using</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: Tempus Fugit... Part 3: micro:bit Interfacing 5V Logic</title><link>https://community.element14.com/challenges-projects/project14/smartalarmclock/b/blog/posts/tempus-fugit-part-3-micro-bit-interfacing-5v-logic</link><pubDate>Fri, 27 Jul 2018 18:42:22 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:1841a0c0-a492-4235-a22e-a035acf33a86</guid><dc:creator>DAB</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;Yes, transistors are your friend.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;I had to use a transistor to boost the current of a RPi to drive a circuit. Simple solutions are always the best.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;DAB&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=5225&amp;AppID=205&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: Tempus Fugit... Part 3: micro:bit Interfacing 5V Logic</title><link>https://community.element14.com/challenges-projects/project14/smartalarmclock/b/blog/posts/tempus-fugit-part-3-micro-bit-interfacing-5v-logic</link><pubDate>Fri, 27 Jul 2018 00:20:25 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:1841a0c0-a492-4235-a22e-a035acf33a86</guid><dc:creator>shabaz</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;Hi Enrico,&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Excellent, detailed post! Thank you for this, I&amp;#39;d not seen such comprehensive information on the micro:bit hardware - I did not realize the schematics were available. Also all the valuable detail about the test points and interfacing are awesome!&lt;/p&gt;&lt;p&gt;It&amp;#39;s a really great platform - I purchased another one today, to explore it further and make more use of them, because it is very small and powerful. The fact that you&amp;#39;re not exposing the LEDs provides some ideas. For some applications people could embed a micro:bit in equipment like you have, with just the USB exposed for external interfacing, and no-one would know that the system processor board was a micro:bit inside!&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=5225&amp;AppID=205&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: Tempus Fugit... Part 3: micro:bit Interfacing 5V Logic</title><link>https://community.element14.com/challenges-projects/project14/smartalarmclock/b/blog/posts/tempus-fugit-part-3-micro-bit-interfacing-5v-logic</link><pubDate>Thu, 26 Jul 2018 13:24:12 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:1841a0c0-a492-4235-a22e-a035acf33a86</guid><dc:creator>luislabmo</dc:creator><slash:comments>2</slash:comments><description>&lt;p&gt;Hello &lt;span&gt;[mention:2136c4649d3b47f78653b7e97ac61f69:e9ed411860ed4f2ba0265705b8793d05]&lt;/span&gt;, it is nice to keep the suspense going.... &lt;span&gt;[View:/resized-image/__size/29x22/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-1841a0c0-a492-4235-a22e-a035acf33a86/contentimage_5F00_188044.gif:29:22]&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Luis&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=5225&amp;AppID=205&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item></channel></rss>