Touch-less Doorbell

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Touch-less Doorbell

We all have a doorbell at our homes. When a guest comes to our house, they search for the doorbell switch and then ring it to let us know their presence. If who came to our house and unable to find doorbell, else person is so short then they cannot find the doorbell in this case we need a solution that can find the presence of a person and rings the doorbell automatically.

Here we are making an object sensing based “Touch Less Doorbell” using infrared transceiver pair and some locally available components.  

It can detect the presence of a person and then if the person is detected, the door bell is automatically turned ON when the person is in-front of the door.


Circuit Diagram

Touch-less Doorbell

Parts Required : 

  • IC-LM358 – 1
  • Buzzer – 1
  • IR Receiver – 1
  • IR Transmitter (Photodiode)- 1
  • LED Green– 1
  • LED Red – 1
  • Variable resistor (Preset) 10K – 1
  • Resistor 470 ohm -3
  • Resistor 10K ohm – 1
  • Battery Cap-1

Working :


Project snapshots


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