This uses Arduino, the Adafruit TSL2591 High Dynamic Range Digital Light Sensor and a blue LED.
- Connect the sensor to the board as described here: https://learn.adafruit.com/adafruit-tsl2591/wiring-and-test
- Connect a blue LED as described here: https://www.arduino.cc/en/Tutorial/Blink
- Install the Arduino IDE
- Install the sensor library as described here https://learn.adafruit.com/adafruit-tsl2591/wiring-and-test or from the library manager in the Arduino IDE
- Install the Adafruit Unified Sensorlibrary as described here https://learn.adafruit.com/adafruit-tsl2591/wiring-and-test or from the library manager in the Arduino IDE