Raspberry Pi Temperature Project

Raspberry Pi Temperature Reporting

Hardware supplies needed for this project:

• Raspberry Pi Zero WH

• Raspberry Pi 3 - Model B

• Raspberry Pi 4 Model B (2GB, 4GB or 8GB)

• HomeAssistant Installation with Mosquitto broker

RPi OS used:

• Installed Bullseye - Lite - Headless - Pi Zero WH

Download the project on the Raspberry Pi

cd /opt
git clone https://github.com/Rodney-Smith/mqtt-SystemTemperature.git

Install dependencies

sudo apt-get update && sudo apt-get install -y build-essential git python3 python3-pip python3-dev python3-libgpiod python3-pil python3-setuptools python3-paho-mqtt

Modify the config.json file

cd /opt/mqtt-SystemTemperature
mv config.example.json config.json
nano config.json
{
    "mqtt": {
        "clientid":"unique-id",
        "topic":"linux/hostname/temperature",
        "broker":"mqttbroker.local",
        "port":1883,
        "user":"mqttusername",
        "password":"mqttpassword"
    }
}

Enable and start the service

Create or copy the startup service for the python script:

sudo cp /opt/mqtt-SystemTemperature/SystemTemperature.service /etc/systemd/system/SystemTemperature.service

Next you will need to reload, enable and start the new service:

sudo systemctl daemon-reload
sudo systemctl enable SystemTemperature.service
sudo systemctl start SystemTemperature.service

Ensure there are no errors. systemctl status SystemTemperature.service or sudo journalctl -u SystemTemperature.service -f