PIR Sensor won't wake up

Sceetch

Thx. now the table should be clear.
But the PIR doesn’t work.
After delay the screen switch off.
But i can breakdance in front of the sensor. It happend nothing…

but if i remove the cable from sensorpin 23 the sceen wakes up.

Sceetch

hi.
There are some news about my Sensor problem.

i tried to install these steps according this link

https://teilzeitrebell.de/blog/magicmirror-part-2-bewegungsmelder

i made two sh-scripts for screen on & off

monitor_off.sh
monitor_on.sh

then i created this phyton

pir_loop.py

!/usr/bin/env python

import sys
import time
import RPi.GPIO as io
import subprocess

io.setmode(io.BCM)
SHUTOFF_DELAY = 10  # seconds
PIR_PIN = 17        # Pin 11 on the board

def main():
    io.setup(PIR_PIN, io.IN)
    turned_off = False
    last_motion_time = time.time()

    while True:
        if io.input(PIR_PIN):
            last_motion_time = time.time()
            sys.stdout.flush()
            if turned_off:
                turned_off = False
                turn_on()
        else:
            if not turned_off and time.time() > (last_motion_time + SHUTOFF_DELAY):
                turned_off = True
                turn_off()
        time.sleep(.1)

def turn_on():
    subprocess.call("sh /home/pi/Pir-Sensor/monitor_on.sh", shell=True)

def turn_off():
    subprocess.call("sh /home/pi/Pir-Sensor/monitor_off.sh", shell=True)

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        io.cleanup()

i can start this with

python pir_loop.py

and it seems that it works.

But in the code i defined a delay of 10 seconds. But after it, it happend nothing.
the weird thing is, that the screen turn off after exact 2 minutes. If i move in front of the sensor the screen turn on again.
But if i do nothing or cover the sensor with something the screen turn on after exact one minute.

does anybody has an idea, whats wrong there?

ebolisa

@sceetch I’ve, more or less, the same setup but the sh files stored in the MagicMirror folder.

dbg

@sceetch Which Raspberry Pi board are you using?

Sceetch

@dbg i’m using Raspberry Pi 3 Modell B Plus (B +)

I have no idea whats wrong.
I can change the delay time value randomly. There is no effect. After exact 2 minutes the screen turn off.

Could it be, there is something activated in the tvservice?

sdetweil

@sceetch off is because the module does this no motion was detected

dbg

@Sceetch

Hi

I installed the MMM-PIR-Sensor last week and I had a similar problem. I just couldn’t get the sensor to work with the module. I spent a lot of time and tried a few different things and nothing worked… in the end I updated the wiringPi GPIO access library (I’m using a Pi 4 Model B).

See here:

http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/

And now it’s working OK. I’m not saying this will fix your problem. It may be that an install I did overwrote the wiringPi files on my Pi or rolled them back in some way, but it worked for me.

Regards

dbg62

sdetweil

@sceetch also i think u need to make sure the sensor actually works

https://projects.raspberrypi.org/en/projects/parent-detector/3

Sceetch

@sdetweil thx for your comment.

I guess the sensor works.
If i start this script, the sensor switch after 2 minutes off.
If the sensor receives movements, the screen turn on, so i think it works. But i will test your script in the evening.

If there is no movement registered from the sensor the screen switch on after 1 minute.

I don’t understand why the countdown is 2 min? In the script the delay time is setted by 10 sec.

And why the screen turns on after another one minute. If there is no signal from the sensor??

sdetweil

@sceetch the sensor must be detecting heat difference. its very sensitive. the dial .ust be set to about 2 minutes, since last movement…

there is a jumper on some of the boards that changes how long it holds the signal active since movement.