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.

This circuit has been designed to respond only to two hand claps which occur in (relatively) quick succession, and to ignore one hand clap or even continuous clapping, as well as most other sounds ...

This project is aimed towards building a model of a car which is self-propelled. This model consists of two specific circuits in which first circuit is CLAP switch circuit and the second one is a LDR ...