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
• CPU Clock Speed
• Disk usage
• Memory usage
• Power status of the RPI
• Last boot
• Last message received timestamp
• Swap usage
• Wifi signal strength
• Wifi connected SSID
• Amount of upgrades pending
• Disk usage of external drives
• Hostname
• Host local IP
• Host OS distro and version
• CPU Load (1min, 5min and 15min)
• Network Download & Upload throughput

System Requirements

You need to have at least python 3.6 installed to use System Sensors.

Installation:

1. Clone this repo >> git clone https://github.com/Sennevds/system_sensors.git
2. cd system_sensors
3. pip3 install -r requirements.txt
4. sudo apt-get install python3-apt
5. Edit settings_example.yaml in "~/system_sensors/src" to reflect your setup and save as settings.yaml:

Value	Required	Default	Description
mqtt	true	\	Details of the MQTT broker
mqtt:hostname	true	\	Hostname of the MQTT broker
mqtt:port	false	1883	Port of the MQTT broker
mqtt:user	false	\	The userlogin( if defined) for the MQTT broker
mqtt:password	false	\	the password ( if defined) for the MQTT broker
deviceName	true	\	device name is sent with topic
client_id	true	\	client id to connect to the MQTT broker
timezone	true	\	Your local timezone (you can find the list of timezones here: time zones)
power_integer_state(Deprecated)	false	false	Deprecated
update_interval	false	60	The update interval to send new values to the MQTT broker
sensors	false	\	Enable/disable individual sensors (see example settings.yaml for how-to). Default is true for all sensors.

6. python3 src/system_sensors.py src/settings.yaml
7. (optional) create service to autostart the script at boot:
   1. sudo cp example_system_sensors.service /etc/systemd/system/system_sensors.service
   2. edit the path to your script path and settings.yaml. Also make sure you replace pi in "User=pi" with the account from which this script will be run. This is typically 'pi' on default raspbian system.
   3. sudo systemctl enable system_sensors.service
   4. sudo systemctl start system_sensors.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.deconz_cpu_usage
            name: CPU
            line_color: '#2980b9'
            line_width: 2
            hours_to_show: 24
          - type: custom:mini-graph-card
            entities:
              - sensor.deconz_temperature
            name: Temp
            line_color: '#2980b9'
            line_width: 2
            hours_to_show: 24
      - type: custom:bar-card
        entity: sensor.deconz_disk_use
        name: HDD
        positions: 
          icon: outside
          name: inside
        color: '#00ba6a'
      - type: custom:bar-card
        entity: sensor.deconz_memory_use
        name: RAM
        positions: 
          icon: outside
          name: inside
      - type: entities
        entities:
          - sensor.deconz_last_boot
          - sensor.deconz_under_voltage

Example: