“Hello guys
In this post I will show how to make a simple IR proximity sensor
IR Proximity have one IR LED & one Photodiode
LM358 IC is used in this project
Basically IR LED will transmitte Infrared light when this light fall on reflecting surface (white surface) it will fall back on Photodiode so in proportion of IR light fall on Photodiode the internal resistance of photodiode change LM358 get input from this photodiode and gives output”