rpi-radiationd-v1.1

RadiationD v1.1 Python POC for Raspberry-Pi 5

This POC produces a simple web service with Flask that can be scraped by Prometheus (for displaying graphs on Grafana).

Requirements:

• sudo apt remove python3-rpi.gpio
• python3 -m pip install rpi-lgpio flask

Connecting the board to the Raspberry-Pi 5

• Connect the pins as shown in the two images below. I connected GND and 5V to any GND and 5V on the RPi, and VIN (which is actually the output pin, not the input pin!) to the RPi GPIO pin 7 (GPIO 4). (Oh, and apologies for using gray and white cables in the same setup. :) )

Run the POC:

• ./cpm-readings.py (or possibly python cpm-readings.py if you have not set execute permissions or are using Windows)
• Navigate to the endpoint /metrics, e.g., http://127.0.0.1/metrics

More resources:

• Migrating from RPi 4 GPIO scripts to 5: https://gpiozero.readthedocs.io/en/stable/migrating_from_rpigpio.html
• RPi 5 GPIO library: https://pypi.org/project/rpi-lgpio/
• Lots of detailed information about the RadiationD board: https://github.com/SensorsIot/Geiger-Counter-RadiationD-v1.1-CAJOE-