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...
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...
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...
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)
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 ...
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...
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...
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...
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...
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...
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...
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...
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 ...
Introduction
The Project
Planning the Design
Testing motors
Control I/O
DC/DC Regulator
Design in practice
The Testing Platform
The Software
Software Design
1. Main Sketch
Main loop() structure
Motors running status block
Seri...
I work with small thermocouples and Hot-Wire/Hot-Film devices in my lab. To test and calibrate these devices requires some crazy equipment sometimes.Try to imagine blowing air on a thermocouple that's in a chain of thermocouples 1mm apart witho...
Just understood what the prize is haha. In that case, this could benefit me with the documentation of the different max speeds of all electric motors in my inventory. I could then select the most appropriate motor for a certain application. &nbs...
I have recently begun the construction of an 8-bit computer based around an Intel 8088 CPU. I believe that I have all necessary components for the build, but I am still not too sure. A handful of ICs (including what appears to be the clock IC) have l...
Introduction
How does it work?
Working with the Microcontroller
Building the Circuit
PCB Version
Final Test and Assembly
How does the Software work?
Summary
Parts List
August 2019 Update - Revision 2 Code
Background
Revision 2 Algorithm
B...
