In this illustration we will going to wire the microphone module, relay and the Arduino board. These project is compatible on most common microcontroller, the main objective of this project to make a sound activated switch or a clap switch.
What is a Relay? A Relay is a electronic operated switch, relay’s uses an electromagnet mechanical to operate the switch and provide electrical isolation between two circuits. Is this lab project we don’t need to isolate one circuit from other,