All sensor kese kam karta hai..new circuit ideas
Ntc.ptc. thermistor
Ultrasonic sensor
Pir motion sensor
ir sensor
DVD sensor
Color sensor
Ldr sensor
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My name..Harish verma
Pir motion sensor video like...https://youtu.be/rvQXjxnVHOk
Ntc ptc thermistor video like...https://youtu.be/bkoO131FUo8