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PIR SENSOR NOT DETECTING THE MOTION. JUST TURNS ON LED WHEN CONNECTS TO THE POWER SUPPLY. Answered


SIR, I bought a simple PIR motion sensor from market. when i connect vcc (input) to the  battery the led gets on. PIR sensor don't detect. what will be possibilities for not working.
PLEASE give me the solution to overcome this problem.

Tags:pir

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Pablos Casita

1 year ago

I had the same problem and didn't mange to get it to work.

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iceng

1 year ago

Which of the two dozen different PIR sensors are you talking about..

Most PIR sensors have a open collector output which needs a pullup resistor...

PIR-OPTOISO-sw.jpgPIR-017-OPTOISO-sw.JPG
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icengiceng

Answer 1 year ago

Right... Just click the pic to see the whole image..

Now about a Best Answer - . - . - .