Raspberry Pi Power Usage Monitor

This Flask application monitors the power usage of a Raspberry Pi. It calculates the power usage based on the CPU usage percentage and the idle and max power values of the specific Raspberry Pi model.

Features

• Power Usage Calculation: The application calculates the power usage based on the CPU usage percentage and the idle and max power values of the specific Raspberry Pi model.
• Voltage Measurement: The application measures the voltage of various components of the Raspberry Pi.
• Throttled State: The application retrieves the throttled state of the Raspberry Pi.

API Endpoints

• /power_usage: This endpoint returns the current power usage, throttled state, and voltages of various components of the Raspberry Pi.

Error Handling

• The application redirects all 404 errors to the /power_usage endpoint.

Running the Application

The application can be run with HTTPS enabled or disabled. The settings for running the application are read from a configuration file named power_usage.conf.

Configuration

The power_usage.conf file should contain the following settings:

• https_enabled: A boolean value indicating whether HTTPS is enabled.
• cert_path: The path to the SSL certificate file.
• key_path: The path to the SSL key file.
• host: The host on which the application should run.
• port: The port on which the application should listen.

Here is an example of what the power_usage.conf file might look like:

[DEFAULT]
https_enabled = False
cert_path = /path/to/cert.crt
key_path = /path/to/key.key
host = 127.0.0.1
port = 5000

Homeassistant Integration

You can integrate this application with Home Assistant using the following configuration:

sensor:
- platform: integration
    source: sensor.example_device_endpoint
    name: 'Example Energy Usage'
    unit_prefix: k
    unit_time: h

  - platform: rest
    name: "Example Device: Endpoint"
    resource: "http://IP_ADDRESS:PORT/power_usage"
    value_template: "{{ value_json.power_usage }}"
    json_attributes:
      - power_usage
      - throttled_state
      - core_voltage
      - sdram_c_voltage
      - sdram_i_voltage
      - sdram_p_voltage
      - cpu_frequency_mhz
    unit_of_measurement: 'W'
    device_class: energy
    state_class: measurement

Contributing

Contributions are welcome. For major changes, please open an issue first to discuss what you would like to change.

Support

If you find these lists useful, please consider giving me a star on GitHub!