How To Make Proximity Sensor | Simple Obstacle Detector

In this video, you will see how to make a simple obstacle detector circuit.
The operation of proximity Sensor circuit is very simple; By using the infrared transmitter and receiver, this circuit can detect the presence of obstacles in front.
When the light from the ir transmitter reaches the obstacle and its reflection reaches the ir receiver, the LED lights up and the buzzer sounds.

Using this circuit, you can make a burglar alarm or a proximity switch.

Components used in proximity sensor circuit:
1- Two BC547 transistors
2- IR transmitter
3- IR receiver
4- 54 kilo ohm resistor
5- 680 Ohm resistor
6- LED
7- 5 volt buzzer

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