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PIR Motion Sensor Circuit

Last Updated on May 14, 2020 by Admin Leave a Comment

This PIR motion sensor circuit detects a human presence and can be used to sound an alarm when a human is detected within its range.

This is my smallest, cheapest, foolproof etc; movement detector with dim-switch that works in all conditions.

In the drawing "tv" means "or similar". Enjoy! I have operated the circuit with 2½-9V, but maybe ca 5V is the best.

How the Circuit Works

So I bought 4 off cheapest possible solar garden lamps with rechargeable batteries. Price 2 euro per piece.

So now I'm going to put together four solar cells, four AAA-batteries and one 5252F (I have three ICs as spare parts!).

The necessary coil is also included in the lamp, so I don't need to buy any parts.

Enclosed the PCB with parts. The PIR has to be in the middle of the board and also the place of the two fastening screws are mentioned.

So, make a big hole in the plastic box and/or in the PCB for the PIR and put all together.

I don't know why it shouldn't work, but we'll see. Thumbs up!

PCB design for the proposed PIR Motion Sensor Circuit

pir sensor
PIR Motion Sensor Circuit

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Tagged With: Sensors

About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

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