The Motif I wanted to use a compact device to measure and display the speed of some orbiting wheels. I quickly created a simple but compact digital tachometer using an Arduino Uno microcontroller and ...

Next up, a custom PCB to connect the keypad to an Arduino and a 20×4 LCD display was milled up, while a test case was designed and printed to check fitment.

The Nokia 3100 is a classic in the circles we frequent. The LCD in this phone is a very cheap and very common display, and it was one of the most popular phones since the phone from Bell, making it… ...