BH1750 Ambient Light Sensor

The bh1750 sensor platform allows you to use your BH1750 (datasheet) ambient light sensor with ESPHome. The I²C bus is required to be set up in your configuration for this sensor to work.


BH1750 Ambient Light Sensor.

# Example configuration entry
  - platform: bh1750
    name: "BH1750 Illuminance"
    address: 0x23
    measurement_time: 69
    update_interval: 60s

By default the measurement_time is set to 69 which will result into measurements up to 54612.5 lx for this sensor. For low-light situtations consider to choose a higher measurement_time up to 254 which will result in a maximum measurement range up to 14835 lx. For sunny scenes (for example outdoors with sunlight) use lower values down to 31 which will give you the maximum measurement range up to 121556 lx.

Configuration variables:

  • name (Required, string): The name for the sensor.

  • address (Optional, int): Manually specify the I²C address of the sensor. Defaults to 0x23 (address if address pin is pulled low). If the address pin is pulled high, the address is 0x5C.

  • measurement_time (Optional, int): Manually specify the measurement time between 31 and 254. Defaults to 69.

  • resolution (Optional, string): The resolution of the sensor in lx. One of 4.0, 1.0, 0.5. Defaults to 0.5 (the maximum resolution).

  • update_interval (Optional, Time): The interval to check the sensor. Defaults to 60s.

  • id (Optional, ID): Manually specify the ID used for code generation.

  • All other options from Sensor.

See Also