When you make MOSFET assemblies with especially when they are retrieved must be checked before assembly. This may seem very simple checker can check all N-type MOS-FET. Source: soloelectronica

The TV-B-Gone is a neat little device that can turn almost any TV on or off. It uses a microcontroller hooked up to IR LEDs to output a library of on/off codes. Adafruit sells a kit, and has the code as well as the schematic on their website. Here’s a micro clone of the TV-B-Gone [...]

iCircuit is the premier iPad and iPhone app for designing and experimenting with circuits. Its advanced simulation engine can handle both analog and digital circuits and features realtime always-on analysis. It is the perfect companion to students, hobbyists, and engineers. You use it as you would any CAD program: you add elements, connect them together, [...]

This video will you show how to make a JDM2 PIC programmer and to learn  how to burn firmware on a PIC microcontroller in different ways.   Source: Diylife

  Source: afrotechmods

The idea was to utilize a diffused RGB LED, an analog temperature sensor (really wanted to expand my working knowledge of the ADC on AVRs) and a frosted glass sphere to create a highly visible temperature indicator. I quickly sorted through my parts bins and found most of what I would need. A quick search [...]