AirDimmer – Touchless MQTT Dimmer with ESP32 + VL53L1X

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AirDimmer – Touchless MQTT Dimmer

I built a touchless light dimmer using an ESP32 and a VL53L1X time-of-flight sensor.
Move your hand up and down in front of the sensor and the light brightness changes instantly.

Demo

Features

  • Gesture-based brightness control
  • MQTT integration (works with Home Assistant)
  • Web configuration page
  • Calibration system

Hardware

  • ESP32 Dev Board
  • VL53L1X Sensor
  • Wiring diagram included in README

More information on GitHub.

Home Assistant Example

automation:
 trigger:
  - platform: mqtt
    topic: "AirDimmer/setup/brightness_change" # <--- Change 'setup' to your device suffix
action:
  - service: light.turn_on
    target:
      entity_id: light.test_airdimmer # <--- Your light entity ID
    data:
      brightness_step_pct: "{{ trigger.payload | float }}"
  - service: mqtt.publish
    data:
      topic: "AirDimmer/setup/receiver" # <--- Change 'setup' to your device suffix
      payload: "{{ state_attr('light.test_airdimmer', 'brightness') }}"
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