Prometheus and EnviroPhat Server (PEPS)

This repo contains fragments needed to export metrics to Prometheus from Pimoroni's EnviroPhat, running on a RaspberryPi Zero on Raspberry OS. Soldering instructions and how to install the OS are not covered here.

Packages

You can use Pimoroni's own Bash script to install all dependencies and set all needed configurations:

curl https://get.pimoroni.com/envirophat | bash

Or go for a more manual install. If you do the manual install, then you need the following packages:

apt install -y python3-pip \
python3-smbus \
raspi-gpio \
i2c-dev \
i2c-bcm2708 \
python3-envirophat \

And then enable I2C, which the EnviroPhat requires. This is done with raspi-config.

Install the server

There's not much to install, just move the peps.py file to the place where the systemd service file expects it to be.

nstall --target-directory=/usr/local/bin peps.py

systemd service file

This repo includes a .service file which tells systemd how to manage the process. Add the serivce file, peps.service, in `/etc/systemd/system/ . Then start the service:

systemctl enable peps
systemctl start --now peps

Metrics endpoint

You can now view the metrics on <RPi Zero IP>:8000. If you want to change the port or interface, then just edit peps.py.