Clap Based Device Control

Description

The clap electrical appliance control is based on the patterns of claps. The claps are one, two, and three likewise devices can be ON and OFF. In this, the specific time delay can be given to the microcontroller because by using this microcontroller can read the triggering pulses. It takes the clock signal from the clock input and turns on the 10 output in sequence, each time when it receives clock input pulses.

This Clap Based Device Control Circuit is based on two commonly used IC that is NE555 timer and CD4017 IC with few more components. In this circuit NE555 monostable generates a clock for the circuit, which provides an oscillating wave to the output pin 3 of 555 timers. Monostable or one short multivibrator has only one stable state and we have to trigger it externally to return it back to its original state.

Now the output from pin 3 of 555 timers is provided to CD4017 decade counter pin 14, which provides a clock pulse for the working of CD4017. For the first electric clap we get output from pin 2 that is Q1 and LED1 will glow and on the second clap we get output from pin 4, LED2 will glow and LED1 become off, and so on. You have to connect individual relay at every output (for a demonstration I have used a single relay).