Adafruit flora wearable sensors modules and neopixels adafruit 1246 the adafruit tsl2561 flora lux sensor lets your next wearable project be light reactive with individual infra red and full spectrum photodiodes by careful use of the sensor readings you can measure ir full spectrum or human visible illuminance unlike most single diode sensors you have control over the sensors gain and timing parameters to sense illuminance ranges from 01 to 40 000 lux on the fly for reference dayligh