DHT22 Sensor

strawberry 3.141

@Bangee go into the directory of your new module e.g. ~/MagicMirror/modules/MMM-Temperature/ and type npm init and follow the instructions, after that type npm install --save node-dht-sensor

Bangee

@strawberry-3-141 thank you! that worked for me.
But now i’ve got this error:

mm-0 App threw an error during load
mm-0 Error: Module version mismatch. Expected 49, got 48.
mm-0     at Error (native)
mm-0     at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:167:20)
mm-0     at Object.Module._extensions..node (module.js:568:18)
mm-0     at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:167:20)
mm-0     at Module.load (module.js:458:32)
mm-0     at tryModuleLoad (module.js:417:12)
mm-0     at Function.Module._load (module.js:409:3)
mm-0     at Module.require (module.js:468:17)
mm-0     at require (internal/module.js:20:19)
mm-0     at Object.<anonymous> (/home/pi/MagicMirror/modules/temperature/node_helper.js:2:17)
mm-0 Whoops! There was an uncaught exception...
mm-0 Error: Module version mismatch. Expected 49, got 48.
mm-0     at Error (native)
mm-0     at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:167:20)
mm-0     at Object.Module._extensions..node (module.js:568:18)
mm-0     at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:167:20)
mm-0     at Module.load (module.js:458:32)
mm-0     at tryModuleLoad (module.js:417:12)
mm-0     at Function.Module._load (module.js:409:3)
mm-0     at Module.require (module.js:468:17)
mm-0     at require (internal/module.js:20:19)
mm-0     at Object.<anonymous> (/home/pi/MagicMirror/modules/temperature/node_helper.js:2:17)
mm-0 MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
mm-0 If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
mm-0 Launching application.

On line 2:

var sensorLib = require("node-dht-sensor");

Node Version

pi@raspberrypi:~/MagicMirror/modules $ node -v
v6.3.1

strawberry 3.141

@Bangee depending on your other post about this problem in a different thread I assume you have a newer node version installed as you had on your old sd card, so maybe this will help you https://docs.npmjs.com/cli/rebuild

Bangee

@strawberry-3-141 I’ve tried this before, but did not work for me. I’ve also made a reboot.

Will i need to have a downgrade?

strawberry 3.141

@Bangee never had such an issue before, did a clean install instead of copying images on sdcard, is there a reason why you copied an old image?

Bangee

ah no, I’ve made a new installation on a brand new sd card.
I moved my own moduls. the temperature module is a new one.

But I’ve got the same with @paviro PIR moudle… :-(

strawberry 3.141

did you copy all the node_modules directories? if so this is propably the issue go to the module remove the directories and run npm install

Bangee

No, I’ve installed the node_modules with npm install.

https://github.com/paviro/MMM-PIR-Sensor/issues/9

strawberry 3.141

then I have no clue sry

Bangee

I could fix this with the same workaround as the PIR Sensor.

now its runnig but electron start up everything and crashes after loading all data.

Any idea howto debug this? ther is nothing in my error logs…

/var/log/messages:

pi@raspberrypi:~/MagicMirror/modules/temperature $ tail -f /var/log/messages
Sep 14 13:16:05 raspberrypi kernel: [706942.834881] gpiomem-bcm2835 3f200000.gpiomem: gpiomem device opened.
Sep 14 13:16:32 raspberrypi kernel: [706969.575020] gpiomem-bcm2835 3f200000.gpiomem: gpiomem device opened.
Sep 14 13:17:00 raspberrypi kernel: [706997.192894] gpiomem-bcm2835 3f200000.gpiomem: gpiomem device opened.

thats all… :-(

node_helper.js:

'use strict';

/* Magic Mirror
 * Module: temperatur.js
 *
 * By Benjamin Angst 
 * MIT Licensed.
 */

const NodeHelper = require('node_helper');
const sensorLib = require('node-dht-sensor');

module.exports = NodeHelper.create({
		 start: function () {
			 console.log('Temperatur helper started ...');
		 },
		 
		 // Subclass socketNotificationReceived received.
		 socketNotificationReceived: function(notification, payload) {
		   const self = this;
		   if (notification === 'REQUEST') {
			 var sensor = {
			     initialize: function () {
			         return sensorLib.initialize(22, 27);
			     },
			     read: function () {
			         var readout = sensorLib.read();
			         console.log('Temperature: ' + readout.temperature.toFixed(2) + 'C, ' +
			             'humidity: ' + readout.humidity.toFixed(2) + '%');
			         setTimeout(function () {
			             sensor.read();
			         }, 2000);
			         // Send Temperatur
			         self.sendSocketNotification('DATA',{
							temp: readout.temperature.toFixed(2),
							humidity: readout.humidity.toFixed(2)
					 });
			     }
			 };
			
			 if (sensor.initialize()) {
			     sensor.read();
			 } else {
			     console.warn('Failed to initialize sensor');
			 }
		   }
		 }
 
});

temperature.js

/* Magic Mirror
 * Module: temperatur.js
 *
 * By Benjamin Angst 
 * MIT Licensed.
 */

Module.register("temperature",{
    // Default module config.
    defaults: {
        gpioPIN: 27,
        sensorType: 22, // Can be 22 or 11
        prependString: "Temperatur ",
    },

    // Override dom generator.
    getDom: function() {
        var wrapper = document.createElement("div");
        wrapper.innerHTML = "T: " + this.temperature + " °C / H: " + this.humidity + " %";
        return wrapper;
    },
    
    start: function() {
        this.temperature = 'fetching...';
        this.sendSocketNotification('REQUEST');
    },


    socketNotificationReceived: function(notification, payload) {
    if (notification === 'DATA') {
        this.temperature = payload.temp;
        this.humidity = payload.humidity;
        this.updateDom();
    }
    },
});