PIR gives black screen

[Richard238]

I added a PIR to my MM, and I get a black screen, and no MM in browser on other LAN devices.
Hitting the ‘Windows’ key brings up the Pi start menu, where I can lunch terminal and stop MM.
A simple test script confirms the PIR device is working correctly without MM running.

Any ideas on how to fix this, please?

Here are the errors, and my config.

{ Error: Cannot find module 'onoff'
    at Module._resolveFilename (module.js:455:15)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/electron/dist/resources/electron.asar/common/reset-search-paths.js:35:12)
    at Function.Module._load (module.js:403:25)
    at Module.require (module.js:483:17)
    at require (internal/module.js:20:19)
    at Object. (/home/pi/MagicMirror/modules/MMM-PIR-Sensor/node_helper.js:11:14)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)
    at Module.load (module.js:473:32)
    at tryModuleLoad (module.js:432:12) code: 'MODULE_NOT_FOUND' }

Config:

		{
		module: 'MMM-PIR-Sensor',
		config: {
				sensorPIN:22,
                powerSaving: true,
                relayPIN: false,
				powerSavingDelay: 0,
                relayOnState: 1
			// See 'Configuration options' for more information.
		}
	},

[yawns]

After running git clone https://github.com/paviro/MMM-PIR-Sensor.git in ~/MagicMirror/modules, did you run

cd MMM-PIR-Sensor
npm install

? The npm install in this directory should have installed onoff as a dependency.

[Richard238]

That seems to have fixed it, thank you.
There’s now a prompt at the top of MM saying there’s an update available for the PIR module.
How do I go about updating an individual module?

[yawns]

In your example:

cd ~/MagicMirror/modules/MMM-PIR-Sensor
git pull
npm install

So you enter the modules directory, tell git to retrieve (= pull) the latest code from github and afterwards you install dependencies again, just in case

[Richard238]

Perfect, thank you! :)