The Adafruit TSL2591 High Dynamic Range Digital Light Sensors can be re-configured to detect illuminance from 188 µLux to 88,000 Lux on the fly. Containing two sensors, a full spectrum sensor which includes the human visible and infra-red wavelengths, and an infra-red sensor, the boards allow you to calculate the illuminance in Lux. This is handy for controlling LCD brightness according to ambient conditions or controlling exposure in photographic applications.
They have a fixed I2C address so you can only have 1 x sensor attached to your microcontroller. They have 3.3V regulators and level shifters making them 3 to 5V compatible. Ideal for low power or battery powered applications, they have a very low current draw, only 0.4mA when actively sensing and 5µA in sleep mode.
The board also features STEMMA QT connector on either side, to allow solderless connections between the TSL2591 and development boards or to chain it with a range of other sensors and accessories using a compatible QT cable.
Supplied as a fully assembled and tested board plus a strip of 01.in. header pins for you to solder on as required.
- Approximates human eye response
- Extremely wide dynamic range: 1 to 600,000,000 counts
- Lux range: 188 µLux to 88,000 Lux
- 3 to 5V DC power supply
- Dimensions 19 x 16 x 1mm (0.75 x 0.63 x 0.04in.)
- Adafruit part no.: 1980
*Customers looking to resell on eBay or Amazon should contact Adafruit directly.
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