AS7341 Spectral Color Sensor

The as7341 sensor platform allows you to use your AS7341 spectral color sensor (datasheet, Adafruit_) with ESPHome. The I²C Bus is required to be set up in your configuration for this sensor to work.

# Example configuration entry
sensor:
- platform: as7341
  f1:
    name: "415nm"
  f2:
    name: "445nm"
  f3:
    name: "480nm"
  f4:
    name: "515nm"
  f5:
    name: "555nm"
  f6:
    name: "590nm"
  f7:
    name: "630nm"
  f8:
    name: "680nm"
  clear:
    name: "Clear"
  nir:
    name: "NIR"

Configuration variables

• f1 (Optional): The reading for the 415nm channel. All options from Sensor.

• f2 (Optional): The reading for the 445nm channel. All options from Sensor.

• f3 (Optional): The reading for the 480nm channel. All options from Sensor.

• f4 (Optional): The reading for the 515nm channel. All options from Sensor.

• f5 (Optional): The reading for the 555nm channel. All options from Sensor.

• f6 (Optional): The reading for the 590nm channel. All options from Sensor.

• f7 (Optional): The reading for the 630nm channel. All options from Sensor.

• f8 (Optional): The reading for the 680nm channel. All options from Sensor.

• clear (Optional): The reading for the clear channel. All options from Sensor.

• nir (Optional): The reading for the NIR (near-infrared) channel. All options from Sensor.

• gain (Optional): The gain used by the device. A higher gain may be more suitable for lower-light environments. Must be one of:

  • X0.5
  • X1
  • X2
  • X4
  • X8 (default)
  • X16
  • X32
  • X64
  • X128
  • X256
  • X512

• astep (Optional): The number of integration steps. Default is 599. Must be between 0 and 65534.

• atime (Optional): The integration time per step in increments of 2.78µs. Default is 29. Must be between 0 and 255.

• All other options for I²C devices described at I²C Bus.

Integration time

The integration time determines how long a channel measurement takes and depends on ATIME and ASTEP. The formula for the total integration time is:

See Also

• Sensor Filters
• Adafruit_AS7341
• SparkFun_AS7341X_Arduino_Library
• API Reference