Connect module with Arduino
How it's done
Lux module uses a special protocol for communication with Arduino, called I2C.
For I2C communication Arduino board uses special pins. For each Arduino board it is different.
Arduino UNO uses pins A4 for SDA and A5 for SCL.
Connect male wires on Arduino board:
A4 - green; A5 - blue; 5V - yellow; GND - purple;