Drum_trigger_light_bulbs

See it in action

DrumLight2.mp4

Ride with buzzer underneath acting as a trigger controlling volume sensor on or off. Volume sensor then trigger 120v power relay to lit up the light bulbs

This sketch reads a piezo element to detect a knocking sound. It reads an analog pin and compares the result to a set threshold. If the result is greater than the threshold, it writes "light switch on!" to the serial port, and toggles the LED on pin 13.

1. First function active when piezo got hit.
2. Second function send singnal to 120V power relay and lit up two light bulbs in real time.

created 25 June 2017 by Yen Chuang https://github.com/antigenius0910 This code is in the public domain, feel free to use it.