MMM-Temperature/Humidity Module (DHT11, DHT22 and AM2302 sensors.)

yawns

@H3L1o150
No, you need to edit the file node_helper.js in the modules folder
Currently you cannot define the pin and the sensor type in the config section. But I think this should be improved in a future release

H3L1o150

@yawns so i left the config.js file like that?

  {
         module: 'MMM-Temperature-Humidity',
          position: 'top_right',
          config: {
               ...
      }
  }

Note from admin: Please use Markdown on code snippets for easier reading!

yawns

I never played around with this module. But I would use this:

{ module: 'MMM-Temperature-Humidity', position: 'top_right' }

And then you edit node_helper.js to set for DHT11 or DHT22 and the correct pin in ( )

H3L1o150

@yawns Tanks for the help

maybe i’m wrong in code. with me show a white screen

psk

@H3L1o150 currently, to define the pin to which sensor is connected, you need to edit the node_helper.js file ind MMM-Temperature-Humidity directory and edit line number 12.
var dht = new rpiDhtSensor.DHT11(2); to var dht = new rpiDhtSensor.DHT11(21);

you can leave the config as

            {
			module: 'MMM-Temperature-Humidity',
			position: 'bottom_right',
			config: {
				refreshInterval: 10000,
				temperaturePrefix: "Room temperature: ",
				temperatureSuffix: "°C",
				humidityPrefix: "Humidity: ",
				humiditySuffix: "%"
			}
		},

guess this needs to be improved in future release… :D

Note from admin: Please use Markdown on code snippets for easier reading!

H3L1o150

Tanks @psk

jsyzthz

i found MMM cannot auto startup if use it. because it must be run with sudo. but i don’t know how to run sudo with ‘DISPLAY=:0’? @psk

Bangee

@jsyzthz checkt this out: https://forum.magicmirror.builders/topic/738/mmm-dht22-humidity-and-temperature-module

psk

@jsyzthz Unfortunately neither did I have any luck executing with sudo while using ‘DISPLAY=:0’ .

For auto start I used PM2.

This is my mm.sh file

cd ~/MagicMirror
DISPLAY=:0 sudo npm start

P.S : I haven’t yet tried this alternative by Bangee. But it sure looks promising in this scenario where we need the mirror to start from ssh(or Terminal) while specifying the display device.

If i come across any workarounds, I’ll update.
Cheers.

jsyzthz

@psk , when i execute your command in my pi3 from putty. will get below error.
0_1476980028924_upload-94e2d7d2-b3a1-493a-a093-7ac8645113c3

d3r

I’m going to order the dht-22 soon. I was reading about the sensor set up and most guides mention using a resistor. Do you guys have one in your set up?

psk

@d3r Dht 22 and 11 series doesnt require one :)

PS: Just saw the post.Was out of town for two weeks…

yawns

@psk
That depends on the sensor you buy. If you use a sensor with 4 pins you need the resistor. If you use the sensor with 3 pins mounted to a circuit board you don’t need the resistor.

psk

This was my reference. Both the models are similar, though the one without the PCB(4 pin model) might require some resistance. Not sure though…Need to dig Deeper :D
Cheers :)

yawns

Right. I have the 4 pin version and this requires a resistor

techzeero

This post is deleted!

BKeyport

Apparently, this project is dead. modules are missing all over the place, and unable to install…

rpi-dht-sensor not found.
npm install falls all over itself.

Just a mess.