Here are the 2 simple circuits named clap switch circuits which are based on clapping. These circuits are useful in switch ON/OFF any devices by just clapping without any movement from your place.

Here is the circuit of a highly sensitive clap switch that can be operated from a distance of up to 10 metres from the microphone. Signals picked up by the microphone are amplified by transistors T1, ...

Remember The Clapper? It was a home automation tool (of sorts) that let you turn appliances on and off by clapping. [Kevin O’Connor] has built something rather similar, if more terrifying. It’s called ...