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

[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.

[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.