IR Distance And Motion Sensor

IR Distance And Motion Sensor


Usually, you would just buy the whole IR module which contains the transmitter, receiver, and amplifier. However, in this post, I’ll show you how you can make your own IR distance sensor/motion detector module.


I wired up the LM358 op-amp to work as a comparator and turn on the LED on the output when the input signal exceeds a certain threshold set by the potentiometer. 

Note: If you would like to for example measure the distance with a microcontroller like an Arduino you should connect the op-amp as an amplifier with a voltage divider providing a negative feedback loop.



Leave a Reply

Your email address will not be published. Required fields are marked *

The following GDPR rules must be read and accepted:
This form collects your name, email and content so that we can keep track of the comments placed on the website. For more info check our privacy policy where you will get more info on where, how and why we store your data.

Advertisment ad adsense adlogger