Closed NaveenR321 closed 3 weeks ago
In the schematic, we have an IR LED as Transmitter and the Photodiode as a Receiver. If an object is in front of the sensor, the reflected light from the object is received by the photodiode, and depending upon the intensity we can determine how far or how close the object is. In the schematic, we can also find an LM358 Op-Amp which is doing all the comparison work and generating the output. Other than that, there is a potentiometer that can be used to adjust the sensitivity of the IR Sensor module or the triggering distance for this module.
Sensor Circuit .pdf