Source: https://www.hackster.io/alexandracovor/circuit-sculpture-led-tiara-50aad7If there's one thing I've learned from Simone Giertz, it's that you should make useless objects just for the sake of ma
1. Keyboard and LED display
The keyboard and LED display circuit is the most commonly used input and display circuit. Usually the number of keys and LED displays is set according to the control system
Radar Principle
The electronic principle of radar operation is very similar to the principle of sound wave reflection. If you shout in the direction of an object that reflects sound (such as a rocky c