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HP 3468A Bench Multimeter Repair

HP 3468A Bench Multimeter Repair

  There are a number of great older bench meters out there that would be perfect when upgrading from a hand held meter when working on the bench.

Published: February 9th, 2014

Use an LED as a Sensors

Use an LED as a Sensors

Michael Beyhs has a new site called Electrical Engineering and More, his first project shows us how to Use an LED as a Sensor. LEDs are normally used to produce light but like many other electrical items it works a bit in the other direction, meaning that it will produce a small voltage when you shine light into it.

Published: February 9th, 2014

DIY 4 Channel Electronic Load

DIY 4 Channel Electronic Load

Instead of keeping a dozen sizes of power resistors on hand to test your variety of power supplies an electronic load allows you to dial in the exact load you are looking for.

Published: February 9th, 2014

Ammo Box Stereo

Ammo Box Stereo

When you take your portable radio to the beach are you always making sure nothing rubs against it so you keep the finish scratch free. If the kids are playing close to it you make sure they dont have anything more dangerous than a rubber ducky since you know it will end up falling on your shiny radio.

Published: February 9th, 2014

Car Stereo Amp Repair

Car Stereo Amp Repair

This amp sure had a ton of issues. Maxxarcade found that there were multiple shorted transistors that needed to be replaced. The amp was built with the TO-220 power transistors tab soldered to a thin heatsink.

Published: February 1st, 2014

RumbleRail  Floppy Disk Jukebox

RumbleRail Floppy Disk Jukebox

   If you still have a few floppy drives left over after making your Floppy Drive CNC machine have a look at making some music by making a Floppy Disk Jukebox!  The overall setup is completly modular.

Published: January 31st, 2014

DIY In Circuit Capacitor ESR Meter

DIY In Circuit Capacitor ESR Meter

If you are fixing some used electronics chances are you will come across some bad caps that are causing some issues. Capacitors have a property known as ESR or equivalent series resistance.

Published: January 31st, 2014

Car Computer Build

Car Computer Build

Even the most modern cars (except possibly ones made by Tesla) dont provide much computing power that the user can harness. EEVBlog user Ptodorov wanted to have the power of a mini computer in his car.

Published: January 27th, 2014

Delta 3D Printer used to Laser Engrave

Delta 3D Printer used to Laser Engrave

Z LeHericy shows us how he used a WickedLasers Spyder Arctic 3 laser to do some laser etching. This hand held laser is very powerful at 2 watts but it isnt much compared to real laser etching machines such as the one that was used to make the etched orange, this one for example is 60 watts.

Published: January 17th, 2014

Gesture Based Security Lock Project

Gesture Based Security Lock Project

Instead of using keys and codes for security this device that Ankur Thakkar, Darshan Shah and Saisrinivasan Mohankumar built as part of their ece4760 Final Project uses gestures to grant access.

Published: January 17th, 2014


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