Clap switch circuits are simple circuits mostly used to fashion sound signals as electrical control signals. Electronics clap switches are used in places where dynamic control of machines/devices is preferred such as a sound-activated light responding to a knock on the door. So, in this project, we are going to design a simple DIY Clap Switch Circuit Using a CD4017 Counter IC.

The main component of this DIY Clap Switch Circuit is a CD4017 IC. A CD4017 IC is a 16 pin CMOS decade counter/Divider with 10 outputs. It is also known as ‘Johnson 10 stage decade counter’. It has 10 decoded outputs that give output signal one by one in sequence when a clock signal from the clock input is given.