and Clap Off! [Rutuvij] and [Ayush] bought a clap switch ... circuit of a clapper using five transistors, something that just can’t be done with other builds centered around a 555 timer chip.

This is a simple clap switch circuit with high sensitivity. The only unusual component is the single coil latching relay. While there are numerous means of generating the latching function, the ...

This is a very simple touch sensor switch that is build with the 555 timer IC. You just need to touch the metal plate ... I love all about electronics, circuit diagrams and crazy projects that can ...