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    I am not able to get data for MMM-LocalTemperature from glitch452 with DHT22

    Scheduled Pinned Locked Moved Troubleshooting
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    • P Offline
      PhilMirror
      last edited by PhilMirror

      Hi there,

      I have installed MMM-LocalTemperature from glitch452 with DHT22, only the title is displayed.

      Conditions:
      RPI 3 B+
      Raspbian GNU/Linux 10 (buster)
      MM² version : “version”: “2.13.0”,
      Module version : 1.3.0 the upto date on November 2020

      config.js:

      {
      module: “MMM-LocalTemperature”,
      position: “top_right”, // Only add a position if you want this module to display the data
      header: “Salle de Bain”,
      config: {

      		pinScheme:"BCMv2",
      		sensorPin: 6, // 22, For GPIO 22
      		units: "metric",
      		iconView: true,
      		initialLoadDelay: 3,
      		updateInterval: 0.5,
      	}
      },
      

      DHT22 physical connctions:

      The probe is loaded with a 10KOhm
      supplied with the 5V and Grnd
      Data connected to pin 31 of RPI Board

      Note that the probe DHT22 is properly working.
      I can test it with .js script and when MM² is not launched, the answer to request are instantanelty displayed :

      pi@raspberrypi:~/node_modules/node-dht-sensor $ node dht22-test.js
      temp: 20.700000762939453°C, humidity: 59.400001525878906%
      pi@raspberrypi:~/node_modules/node-dht-sensor $ node dht22-test.js
      temp: 20.700000762939453°C, humidity: 59.900001525878906%
      pi@raspberrypi:~/node_modules/node-dht-sensor $ node dht22-test.js
      temp: 20.700000762939453°C, humidity: 59.900001525878906%
      pi@raspberrypi:~/node_modules/node-dht-sensor $ node dht22-test.js
      temp: 20.700000762939453°C, humidity: 59.900001525878906%
      pi@raspberrypi:~/node_modules/node-dht-sensor $

      Here is the js test file (with BCM 6 port cofigured = pin 31 of the RPI bord) :

      var sensor = require(“node-dht-sensor”);

      sensor.read(22, 6, function(err, temperature, humidity) {
      if (!err) {
      console.log(temp: ${temperature}°C, humidity: ${humidity}%);
      }
      });


      Does anyone can help me ?

      Others:

      I tried the MMM-LocalTemperature by changing type of libraries ( “WPI”, “BOARD” but no effect
      I also tried previously, with other module like MMM-DHT-Sensor on pin 7 of the borad with correct configuration. That one was able to display on MM² screen the T° and Hum, but with random getting data.

      It seems, the DHT22 can be requested with js script within the 2sec min (specification of the probe), but not properly working when a MM Module requesting data are running :/

      A big thanks for kind help

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