Clap Switch With the Help of Arduino
by hIOTron IoT in Circuits > Arduino
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Clap Switch With the Help of Arduino

In this, we have used clap sound and MIC to sense the sound which will turn on and off the device as a switch.
Supplies
Hardware Components
Arduino UNO
Microphone
General Purpose Transistor NPN
Capacitor 100 nF- 2
Capacitor 100 µF- 2
Resistor 1k ohm
Resistor 1M ohm
Resistor, 15 ohm- 2
LED
Software Components
Arduino IDE
About Project

Basically, a microphone is a sound sensing transducer, which primarily transforms sound energy into electrical energy, so with the help of this sensor, we have sound as a changing voltage. Working is followed basically in four ways such as: Filtration, Amplification, Analog-digital conversion and programming to toggle the LED.
Whenever there is sound, the MIC strikes it up and transforms it into voltage, direct to the magnitude of sound. So for a higher sound, we have a greater value and for the lower sound, we have a deeper value. This value is first filled to the High Pass Filter for the process of filtration.
Then this refined value is filled to the transistor for amplification and the transistor gives the amplified output at the collector. This collector signal is supplied to the ADC0 channel of the UNO, for Analog to Digital conversion.
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