This is a sound activated switch circuit. It’s will turn on and turn off based on a loud sound such as clapping your hands. You […]

This is a motor speed controller circuit diagram built based MAX4295 from Maxim. By using this circuit, you will be able to control the speed […]

This a two station intercom. It uses two wires to run between each intercom unit. Each is self contained with its own battery, speaker, microphone […]