Blog

Raspberry PI - Ohmmeter

sherbieny — Sat, 23 Sep 2017 14:23:51 GMT

An Ohmmeter device using Raspberry PI 2B with ADS1015 as ADC https://github.com/Sherbieny/Ohmmeter-Pi http://fritzing.org/projects/pi-ohmmeterSetupItems needed:PC or LaptopRaspberry Pi (I used model 2B)ADS1015 12bit ADC converter (if you use 1115...(read more)

DIY Wired & WiFi (2.4Ghz & 5 Ghz) Analyzer

dgshue — Thu, 14 Sep 2017 16:10:11 GMT

I started this post as a Wifi Analyzer... but the more I got into it the more it became a complete handheld network analyzer for wireless as well as wired for performing basic network functions such as speed tests and pings, on up to measuring signal...(read more)

Raspberry pi web interface computer on and off system

dasherman — Mon, 11 Sep 2017 04:34:42 GMT

Hi i resently got an idea after learning about freenas interface web based I learned that freenas lets you to turn off your computer form the web so i was thinking is it possible to turn the comouter on by the web interface so i tryed to solve this p...(read more)

Portable addressable led strip tester

den_olli — Fri, 08 Sep 2017 12:19:29 GMT

in the office building I work we have DIY addressable led strips surrounding every floor of the building to make it glow at night. It's a part of my job to maintain this setup and unfortunately the setup breaks down a lot. We we got a defect the...(read more)

Raspberry Pi Universal Scope/Meter

masonjones — Thu, 07 Sep 2017 16:26:51 GMT

How about building a Raspberry Pi universal multimeter and oscilloscope. You could use the bitscope mod and if you can create a application you can make a multimeter app to measure voltage, resistance and current (Or even a LCR function)(read more)

Project14's DIY Test Equipment: DIY Constant Current Load

ipv1 — Sun, 03 Sep 2017 06:18:19 GMT

This is my submission to the Element14 Project14 DIY The problemI have recently been doing extensive experimentation with recycled batteries as well as voltage regulators and line control circuits. The customary approach requires a programmable ...(read more)

Elevator test unit

popupideas — Sun, 27 Aug 2017 18:20:11 GMT

one diy test unit I want to build is a g-force accelerometer tested for elevators. Prefer a Bluetooth enabled box you put inside an elevator that when it is sent up it will record the travel speed, acceleration, start and stoppong force. It bit I had...(read more)

Multi-Ref Mk. II

hlipka — Tue, 22 Aug 2017 21:38:39 GMT

The Multi-Ref is not a test device as such, but the tool I use to test my test equipment. I got the idea for this from the user [matseng] as the Dangerousprototypes.com forum, and found it very useful.MrRef, as it was called, is just two coin cells p...(read more)

Building a Fluxgate Magnetometer based Current Probe

shabaz — Tue, 22 Aug 2017 04:26:35 GMT

IntroductionCurrent measurement can be really awkward when working with circuits. Voltage measurements are (usually) straightforward, but when it comes to current measurements the story is different. One typical approach is to insert a known resistan...(read more)

Arduino oscilloscope - DIY entry device

idanre1 — Mon, 21 Aug 2017 17:46:57 GMT

The Software The Hardware The probe - Try 1 (not that good, please review try 2) The probe - Try 2 Summary Proof of work The big problem with being a maker newbie, is that you have to have equipment.When I started, I bought solderin...(read more)

Vintage 555 - A general-purpose button debouncer

balearicdynamics — Sat, 12 Aug 2017 14:24:51 GMT

Too many button clicksButtons and tactile switches are frequently used in many projects involving micro controllers; one of the most frequent issue is related to unwanted multiple transitions when the button is pressed once.Tactile switches as well a...(read more)

DIY Test Equipment: Ears and Tears 2020 (A Logic Probe)

koudelad — Sun, 06 Aug 2017 20:17:03 GMT

IntroductionWhen I saw Jon's The ByEar 2000, I remembered a Cypress' video showing a construction of an analog alarm and posted that as an comment under his blog post.PSoCs usually have many integrated analog and digital peripherals, so I tho...(read more)

DIY Test Equipment: The Di-o-Matic, a Simple Diode Tester [Arduino]

jc2048 — Sat, 05 Aug 2017 15:09:08 GMT

I really should be doing other things, but I can't resist doing another quick piece of DIY Test Equipment. Again I'mgoing to post it here in my blog. I haven't worked it up into a polished piece of equipment - it isn't even reallyfini...(read more)

USB Programmable (electronic DC load) Test Equipment

Jan Cumps — Sun, 30 Jul 2017 15:10:22 GMT

peteroakes, jc2048 and I are designing a programmable electronic load, here on element14: Programmable Electronic LoadWe'll never make it in time for the DIY Test Equipment initiative (we may have a first prototype In the Year 2525). But it can h...(read more)

Mini Logic Probe with display

Workshopshed — Wed, 26 Jul 2017 21:55:52 GMT

I was planning to make a super simple logic probe but Jon beat me to it with his comparator based logic probe. So I've prototyped a microcontroller based one. Microcontroller based logic probe with displayMy project has just two modules, an ...(read more)