Install Temp and Humid Sensor DHT22 OctoPrint
Make sure you are updated:
sudo apt upgrade
Install the required packages:
sudo apt install build-essential python3-dev python3-openssl git libgpiod2 python3-rpi.gpio
Install the library
git clone https://github.com/adafruit/Adafruit_Python_DHT.git && cd Adafruit_Python_DHT
Now create a Python library with:
sudo python3 setup.py install
Change the directory to the examples directory:
cd ~/Adafruit_Python_DHT/examples/
run the example with code:
sudo ./AdafruitDHT.py 22 4
if it does not work, python might not be in the path. Try this:
sudo python3 AdafruitDHT.py 22 4
The first parameter indicates which sensor was used (22 for the DHT22) and the second indicates which GPIO it is connected to. In this example, we've connected the DHT22 to GPIO 4:
Should look like this:
Temp=25.0* Humidity=45.7%
Install Adafruit Library
pip3 install adafruit-circuitpython-dht
Install adafruit-blinka
sudo pip3 install adafruit-blinka
install the https://github.com/vitormhenrique/OctoPrint-Enclosure Plugin
go to octoptint settings → plugins → enclosure
selerc:
First Input:
Label = Dryer
select Temperature Sensor
Sensor Type = DHT22
Sensor Pin = 4 (Pi4 12)
Second Input:
Label = Box
select Temperature Sensor
Sensor Type = DHT22
Sensor Pin = 21 (Pi4 25)
Select Advanced options and un-check Use SUDO
REF:
https://www.thingiverse.com/thing:2245493
https://github.com/vitormhenrique/OctoPrint-Enclosure
https://roboticsbackend.com/raspberry-pi-3-pins/#:~:text=The%20Raspberry%20Pi%204%20board,computer%20%E2%80%93%20the%20Raspberry%20Pi%20microprocessor.
https://raspberrypi.stackexchange.com/questions/40105/access-gpio-pins-without-root-no-access-to-dev-mem-try-running-as-root