PM-Feinstaub Display

Script and Workflow to show Particulate Matter/Air-Quality (Feinstaub) values on a Divoom Pixoo 64 display. https://divoom.com/products/pixoo-64. The sensor data is pulled from your or nearby station from the awesome project https://sensor.community/.

REST API - communication with Pixoo64

setup the great project https://github.com/4ch1m/pixoo-rest to interact via REST API with Pixoo64

-modify .env setup the IP to pixoo (according the introduction) and setup port for REST

-recommended to create launcher.sh to start REST API on reboot cd /home/pi/scripts/pixoo-rest/pixoo-rest/

nano launcher.sh

#!/bin/sh
# launcher.sh
# navigate to home directory, then to this directory, then execute python scrip$

cd /
cd home/pi/scripts/pixoo-rest/pixoo-rest
/usr/local/bin/python3 app.py
cd /

CTRL + X Y

run launcher.sh to start REST API. By opening the brwoser with respective IP and Port, the swager UI should be available sh launcher.sh

Setup and configure Pull logic to send PM/Feinstaub Data to Pixoo64 display

• copy folder pm-display-logic including python file and TTF (font for pixoo) to your linux env.
• install all python dependencies. Tested with python 3.7, but should work also with newer versions.
• customize the configuration directly in python file:

sensor_station = '12345' choose your sensor station ID on https://maps.sensor.community/#9/48.8676/9.4095

rest_host = 'http://192.168.2.100:5001' select the IP and PORT where your REST API runs.

path_to_font_file = '/home/pi/scripts/pm-display/PICO-8_mod.ttf' pixoo64 has limited pixel density, therefore a special font is used. make sure you insert absolut path to the *.ttf file

run the pyton script to test and verify if everthing is setup properly

cd /home/pi/scripts/pm-display/ (location of python file)

python main.py or python3 main.py

Run Python file periodically

trigger the main.py periodically. Default is 1 minute, setup via crontab.

crontab -e

optional: if REST API runs on same machine, with a restart the REST starts:

@reboot sh /home/pi/scripts/pixoo-rest/pixoo-rest/launcher.sh >/home/pi/scripts/pixoo-rest/pixoo-rest/logslauncher/cronlog 2>&1

add this to the end of crontab file:

* * * * * sleep 0; /usr/local/bin/python3 /home/pi/scripts/pm-display/main.py >> /home/pi/scripts/pm-display/logmain.log 2>&1

CTRL + X Y