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We no longer stock SparkFun Luminosity Sensor Breakout - TSL2561, but here are current alternatives in Light & Colour.

SparkFun Luminosity Sensor Breakout - TSL2561

SparkFun Luminosity Sensor Breakout - TSL2561

Discontinued

The TSL2561 Luminosity Sensor Breakout is a sophisticated light sensor with a flat response across most of the visible spectrum. Unlike simpler sensors, the TSL2561 measures both infrared and visible light to better approximate the response of the human eye.

As an integrating sensor, the TSL2561 soaks up light for a predetermined amount of time, allowing it to measure both very small and very large amounts of light by adjusting the integration time — similar to changing the shutter speed on a camera.

Key Features

  • Wide Dynamic Range – Measures from 0.1 to 40,000+ Lux
  • Dual Photodiodes – Two integrating ADCs capture infrared and visible light simultaneously
  • I²C Interface – Direct digital communication with configurable address
  • Adjustable Integration Time – Tune sensitivity for different lighting conditions
  • Low Power – 3V supply voltage, 0.6 mA max current draw
  • Human Eye Response – Combined IR and visible light measurement approximates how we perceive brightness

Ideal For

  • Ambient light sensing and automatic display brightness
  • Weather stations and environmental monitoring
  • Grow light and greenhouse monitoring
  • Photography and studio light metering

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