Cant seem to get MMM-PIR-Sensor working

[mkono87]

Using a rp3 and have a Dell monitor plugged in with a HDMI to DVI connector as this monitor doesnt have hdmi. I have tested that my pir sensor is pulling high on the gpio pin but MagicMirror will not start and throws an error. Even the MMM-PIR module I cant get to work. This is the error im seeing.

/home/pi/MagicMirror/node_modules/electron/dist/electron js/electron.js: symbol lookup error: /home/pi/MagicMirror/modules/MMM-PIR-Sensor/node_modules/epoll/build/Release/epoll.node: undefined symbol: _ZN2v816FunctionTemplate3NewEPNS_7IsolateEPFvRKNS_20FunctionCallbackInfoINS_5ValueEEEENS_5LocalIS4_EENSA_INS_9SignatureEEEiNS_19ConstructorBehaviorENS_14SideEffectTypeE
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! magicmirror@2.9.0 start: `sh run-start.sh`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the magicmirror@2.9.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2019-10-22T20_34_24_379Z-debug.log

Also my module config is super basic as I dont need extra options right now.

		{
			module: 'MMM-PIR-Sensor',
			config: {
				// See 'Configuration options' for more information.
			}
		}

Could anyone think of anything I could check with whats going on?

[sdetweil]

@mkono87 did u do

npm install

in the MMM-PIR_Sensor folder?

it is required

[mkono87]

@sdetweil said in Cant seem to get MMM-PIR-Sensor working:

@mkono87 did u do

npm install

in the MMM-PIR_Sensor folder?

it is required

Of course just like the instructions said. I do get one warning though.

npm WARN lifecycle Magic-Mirror-Module-PIR-Sensor@1.1.0~postinstall: cannot run in wd Magic-Mirror-Module-PIR-Sensor@1.1.0 electron-rebuild -e ../../node_modules/electron (wd=/home/pi/MagicMirror/modules/MMM-PIR-Sensor)

[A Former User]

I never got that module working reliably. Here’s what I wrote instead:

#!/usr/bin/python3

# Imported Modules
from time import sleep
import subprocess
import RPi.GPIO as GPIO


# initialize GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.cleanup()
GPIO.setup(22, GPIO.IN)

PIR = 22
display_on = True

while True:

    if display_on and not GPIO.input(PIR):
        subprocess.run("vcgencmd display_power 0 > /dev/null 2>&1", shell=True)
        display_on = False

    if not display_on and GPIO.input(PIR):
        subprocess.run("vcgencmd display_power 1 > /dev/null 2>&1", shell=True)
        display_on = True
        sleep(30)

    sleep(0.5)

Save this in your home directory as pir.py . Note that you will need to change PIR=22 to whichever pin your sensor is on.

Run: python3 pir.py and you should be up and running

To have it run at every boot, type crontab -e and add

@reboot python3 /home/pi/pir.py

Hope this helps!

[cowboysdude]

Been using this for over 3 years… I made it, it’s simple and directions are clear…
https://github.com/cowboysdude/Pir-Sensor