Adjust Tidbyt brightness dynamically based on Home Assistant

Developers
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Hey Tidbyt community!

I recently integrated my Tidbyt with Home Assistant, allowing it to adjust its brightness dynamically based on the brightness level of my room (light.room). I wanted to map the brightness in a way that it only ranges between 20 and 80 on the Tidbyt, while the light.room brightness in Home Assistant ranges from 0 to 255.

Here’s how I did it:

Step 1: Define the REST command

In your configuration.yaml, add the following rest_command to make a PATCH request to the Tidbyt API:

rest_command:
  update_tidbyt_brightness:
    url: "https://api.tidbyt.com/v0/devices/{device.id}"
    method: PATCH
    headers:
      accept: "application/json"
      Authorization: "Bearer YOUR_API_TOKEN"  # Replace with your Tidbyt API token
      Content-Type: "application/json"
    payload: '{"brightness": {{ brightness }}}'

Step 2: Create the Automation

Next, create an automation that triggers when the hallway light’s brightness changes and scales it to a 20-80 range for Tidbyt:

    automation:
      - alias: Update Tidbyt Brightness Based on Light Brightness
        trigger:
          platform: state
          entity_id: light.room
        condition:
          condition: template
          value_template: "{{ state_attr('light.room', 'brightness') is not none }}"
        action:
          - service: rest_command.update_tidbyt_brightness
            data:
              brightness: "{{ ((state_attr('light.room', 'brightness') | int * (80 - 20) / 255) + 20) | round(0) }}"

Feel free to try this setup, tweak it to your needs, and share your experiences. Let me know if you have any questions or suggestions to improve this further!

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