Assistant2display - PIR sensor problem

ondrax

Hello,

i use A2D and working pretty good. But i have trouble with PIR sensor NC-SR501. I set up PIR and countdown working, but after 10-20s reset countdow to 5 minutes. I try change possition on potenciometer (sensitivity/time) on PIR and same trouble. If i disconnect PIR, coutdown work and after 5 minutes black screen.

Do you have idea where is problem? Faulty PIR?
I think that PIR not working correctly, becouse automatically change value, but I do not make any movement in front of the sensor.

If i try test from wiki A2D PIR, value automatically change 1/0, but I do not make any movement in front of the sensor.

I tried change value reverse, and no sollution.
I tried change GPIO on RPI and same problem.

Thanks.

and what wiki says ?

I think, you have to read this

ondrax

@Bugsounet I have problem with PIR becouse value change automatically.

pi@raspberrypi:~/pir $ node setup
[PIR] PIR v1.0.4 Initialized…
[PIR] Start
[PIR] Sensor read value: 1
[PIR] Detected presence (value:1)
[PIR] Sensor read value: 0
[PIR] Sensor read value: 1
[PIR] Detected presence (value:1)
[PIR] Sensor read value: 0
[PIR] Sensor read value: 1

This value change automatically. No start with hand etc… PIR faulty?

@ondrax 2 ways to solve this problem:

decrease the sensibility of the pir sensor
the sensor may be near a heat source (a lot of infrared is emitted), in this case move it in other place [I have personnaly this case, because my pir sensor is above my domestic heating. i move it and works]