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

[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.