eBay is a wondrous land, full of Star Wars memorabilia in poor condition, old game consoles at insane markups, and a surprising amount of DIY electronics. [TheHWCave] found himself tinkering with a ...

This tachometer is based on Atmel ATmega8L microcontroller and Nokia 5110 LCD LPH7366 for measuring rotation speed of any rotating things. A photo sensor is functioned by a photoresistor that is used ...

Aftermarket tachometers have been around for decades but in our market segment we've seen a paradigm shift away from the monster-tachs of days gone by to newer, lighter, more precise units. The aim is ...