HC-SR501 PIR
Anybody having issues with PIR not working in Smart House project.
Program seems to work but I have to physically touch the PIR to get operation.
Looking at PIR pinout (left to right and following diagram in E-book) gnd, pin 14, Vbus is how I hooked it up.
Measured 5Vdc at PIR so that's OK.
Thoughts?
TX
Gilles
Comments
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Oh Also Jumper in PIR is in across pin 1 & 2 (left to right)
tx
Gilles
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Hello @barriereg,
Have you ever adjusted the sensitivity of the PIR sensor? The link below shows how to do it.
If it still doesn't work properly, please let us know.
Have a nice day.
Naze
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Thanks I'll try that
stay tuned,
tx
Gilles
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From E-book (page150) Vcc is on left and Gnd is on Right.
The diag in the sensitivity adj is opposite.
Is this my issue?
tx
Gilles
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There are no markings on circuit board
tx
Gilles
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from this diag (p.150 E-book) Vcc is on right. The sensitivity adj diag is on left.
tx
Gilles
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Confirmed E-book is correct
This circuit board unlike mine is marked it matches e-book
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Instead of building the diode circuit, I ran this in micro blocks.
I could not get it to detect any movement with any adjustment.
Once I touch the PIR it detects, and I get a True. The test above resets after 2 seconds (I get 123 displayed) and again the only way I get it to say True is to touch the PIR.
tx
Gilles
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Hello @barriereg,
Can you test the PIR sensor with the code I added below. You need to make the PIR sensor connections as follows.
VCC-VBUS, GND-GND, OUT-GP14
Please test the PIR sensor directly without connecting the gas sensor.
Thanks.
Naze
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Hi @barriereg, when I first used the PIR I had the same experience when using the project from the ebook. I already left the smoke sensor out when I start testing. I had to touch the PIR itself to make it work. This time I used just the ubp-file from @ozerngg and got a really sensitive and good working PIR.
Didn't use the "screws" to play with the sensitivity and delay at the moment.
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1
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Hi @PeterMathijssen ,I've been away from home for the 2 last weeks. I did not use smoke detector either (not in the kit I got). So, robotistan sent you a new PIR?
tx
Gilles
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No, my PIR worked when I used the script from @ozerngg.
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