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
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:

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

Value	Required	Default	Description
hostname	true	\	Hostname of the MQTT broker
port	false	1883	Port of the MQTT broker
user	false	\	The userlogin( if defined) for the MQTT broker
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
check_available_updates	false	false	Check the # of avaiblable updates
check_wifi_strength	false	false	Check the wifi strength
check_wifi_ssid	false	false	Check the wifi connected SSID
external_drives	false	\	Declare external drives you want to check disk usage of (see example settings.yaml)

python3 src/system_sensors.py src/settings.yaml
(optional) create service to autostart the script at boot:
1. sudo cp 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
        title: HDD
        title_position: inside
        align: split
        show_icon: true
        color: '#00ba6a'
      - type: custom:bar-card
        entity: sensor.deconz_memory_use
        title: RAM
        title_position: inside
        align: split
        show_icon: true
      - type: entities
        entities:
          - sensor.deconz_last_boot
          - sensor.deconz_under_voltage

Example:

aolwas / system_sensors