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 is designed to generate a 20KHz pseudo sine wave signal that can power about 50 remote touch activated switch circuits. It can support a cable length of about 2500 feet. A typical remote ...

Stress eating is something many people are familiar with, but how the brain links positive reinforcement like food to emotional states like fear or anxiety is not well-understood. The wiring in the ...