Read the statement by Michael Teeuw here.
MMM-PIR-Sensor Guide with Edits and Updates
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I recently got the MMM-PIR-Sensor up and going and it’s working flawlessly. I wanted to give a little information as I had to parse this from different sources and some of the info is a bit dated.
I am relatively new to pi in general so definitely point it out if something isn’t right.
Below is a step by step for MMM-PIR-Sensor by paviro.
Navigate to your modules folder at
cd ~/MagicMirror/modules
Executegit clone https://github.com/paviro/MMM-PIR-Sensor.git
Navigate tocd ~/MagicMirror/modules/MMM-PIR-Sensor
This is one area I got held up
The guide states to perform annpm install
where a dated version(2.25) of wiring-pi would be installed.
When issuing the commandgpio -v
, I would get an error message “Unable to determine hardware version. I see: Hardware : BCM2835 - expecting BCM2708 or BCM2709. Please report this to project@drogon.net”.Instead use
npm install wiring-pi
inside your MMM-PIR-Sensor folder. This will install the updated version(2.44) which you can verify withgpio -v
.Then issue command
sudo usermod -a -G gpio pi
Thensudo chmod u+s /opt/vc/bin/tvservice && sudo chmod u+s /bin/chvt
The guide says to reboot here but after that, it still wasn’t working for me. Then I stumbled on some excellent advice from the forums here from @JamesMM with @strawberry 3.141 contributing.
Their focus was on the node_helper.js within the module. These are their edits.
First, rename the current file.
mv node_helper.js node_helper_backup.js
Now, create a new file called node_helper.js using
sudo nano node_helper.js
Copy and paste this code
'use strict'; /* Magic Mirror * Module: MMM-PIR-Sensor * * By Paul-Vincent Roll http://paulvincentroll.com * MIT Licensed. */ const NodeHelper = require('node_helper'); const Gpio = require('onoff').Gpio; const exec = require('child_process').exec; module.exports = NodeHelper.create({ start: function() { this.started = false; }, activateMonitor: function() { if (this.config.relayPIN != false) { this.relay.writeSync(this.config.relayOnState); } else if (this.config.relayPIN == false) { // Check if hdmi output is already on exec("/opt/vc/bin/tvservice -s").stdout.on('data', function(data) { if (data.indexOf("0x120002") !== -1) exec("/opt/vc/bin/tvservice --preferred && chvt 6 && chvt 7", null); }); } }, deactivateMonitor: function() { if (this.config.relayPIN != false) { this.relay.writeSync(this.config.relayOffState); } else if (this.config.relayPIN == false) { exec("/opt/vc/bin/tvservice -o", null); } }, // Subclass socketNotificationReceived received. socketNotificationReceived: function(notification, payload) { if (notification === 'CONFIG' && this.started == false) { const self = this; this.config = payload; self.timer = null; self.onState = 0; // Setup value which represent on and off const valueOn = this.config.invertSensorValue ? 0 : 1; const valueOff = this.config.invertSensorValue ? 1 : 0; //Log.info('PIR: ' + this.name); //Setup pins this.pir = new Gpio(this.config.sensorPIN, 'in', 'both'); if (this.config.relayPIN) { this.relay = new Gpio(this.config.relayPIN, 'out'); this.relay.writeSync(this.config.relayOnState); exec("/opt/vc/bin/tvservice --preferred && sudo chvt 6 && sudo chvt 7", null); } //Detected movement this.pir.watch(function(err, value) { if (value == 1) { clearTimeout(self.timer); if (self.onState != 1) { self.sendSocketNotification("USER_PRESENCE", true); if (self.config.powerSaving) { self.activateMonitor(); self.onState = 1; } } } else if (value == 0) { if (self.onState != 0) { self.timer = setTimeout(function(){ self.sendSocketNotification("USER_PRESENCE", false); if (self.config.powerSaving) { self.deactivateMonitor(); self.onState = 0; } }, self.config.offDelay); } } }); this.started = true; } else if (notification === 'SCREEN_WAKEUP') { this.activateMonitor(); } } });
This creates a new config called offDelay and it is in configurable in milliseconds.
Reboot your pi.Then add the modules configuration to MM’s config.js. I used this but obviously adjust it to your own needs.
{ module: 'MMM-PIR-Sensor', config: { sensorPIN: 22, powerSaving: true, offDelay: 30000, } }
The offDelay of 30000 is 30 seconds.
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I like people who write guides! I don’t use a PIR sensor but I do appreciate the time and effort you put in on everyone’s behalf.
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Thanks!
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I followed your guide but i still get version 2.25 when i use npm install wiring-pi.
Any ideas why? -
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@StacheEnthusiast @DavA Hey, I just decided to try and install MMM-PIR-Sensor but am running into the same issue.
I was wondering if you ever did get this working as the directions have stated… -
shit, this killed my MM build…it’s all blank…crap
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@msherwood Hey FYI I just got my lastest build (from scratch yesterday) working with MMM-PIR-Sensor:
I also found that
npm install wiring-pi
installed the old (2.25) version for me. I found a newer library:npm install wiring-pi-2019
which installs version 2.5 (this one works on my pi4!).
I also found that the location of the
tvservice
binary has changed, so I just used the following bash commands:sudo chmod u+s `which tvservice` sudo chmod u+s `which chvt`
It then worked for me (Note, I did not modify the
node_helper.js
script at all.) -
Hi all, unfortunately I’m not too familiar with coding but had this module failed to update today having followed the steps above which worked fine with the previous version.
Has anyone else experienced this?
Thanks