jangottweiss / system_sensors

Logging of system sensor specific for the RPI and sending them to a MQTT broker

RPI System sensors

I’ve created a simple python script that runs every 60 seconds and sends several system data over MQTT. It uses the MQTT Discovery for Home Assistant so you don’t need to configure anything in Home Assistant if you have discovery enabled for MQTT

It currently logs the following data:

• CPU usage
• CPU temperature
• Disk usage
• Memory usage
• Power status of the RPI
• Last boot

Installation:

1. Clone this repo
2. cd system_sensors
3. pip3 install -r requirements.txt
4. python3 system_sensors.py
5. (optional) create service to autostart the script at boot:
   1. sudo nano /etc/systemd/system/system_sensor.service
   2. copy following script:

   [Unit]
   Description=System Sensor service
   After=multi-user.target
   
   [Service]
   User=[user]
   Type=idle
   ExecStart=/usr/bin/python3 /home/pi/sensors/system_sensors.py
   
   [Install]
   WantedBy=multi-user.target

   3. edit the path to your script path
   4. sudo systemctl enable system_sensor.service
   5. sudo systemctl start system_sensor.service

Home Assistant configuration:

Configuration:

The only config you need in Home Assistant is the following:

mqtt:
  discovery: true
  discovery_prefix: homeassistant

Lovelace UI example:

I have used following custom plugins for lovelace:

• vertical-stack-in-card
• mini-graph-card
• bar-card

Config:

- type: 'custom:vertical-stack-in-card'
    title: Deconz System Monitor
    cards:
      - type: horizontal-stack
        cards:
          - type: custom:mini-graph-card
            entities:
              - sensor.deconzcpuusage
            name: CPU
            line_color: '#2980b9'
            line_width: 2
            hours_to_show: 24
          - type: custom:mini-graph-card
            entities:
              - sensor.deconztemperature
            name: Temp
            line_color: '#2980b9'
            line_width: 2
            hours_to_show: 24
      - type: custom:bar-card
        entity: sensor.deconzdiskuse
        title: HDD
        title_position: inside
        align: split
        show_icon: true
        color: '#00ba6a'
      - type: custom:bar-card
        entity: sensor.deconzmemoryuse
        title: RAM
        title_position: inside
        align: split
        show_icon: true
      - type: entities
        entities:
          - sensor.deconzlastboot
          - sensor.deconzpowerstatus

Example: