Introduction: 555 Timer Piano
In this instructable i will show you how to build small 555 timer based piano
every part is on the schematic
Step 1: Build It
Circuit is very easy to build but you need to keep track of the resisitor that are connected to button beacuse they define the tone that is coming out of oscillator
Step 2: Test It
It should output square wave and you can play some music with it even !