EV3 LEDs - topikachu/ev3dev GitHub Wiki

The 2 LEDs on the EV3 are connected via GPIOs (2 each). Each LED has 3 colors: red, amber and green. Turning on a single GPIO will change the LED to red or green. Turning on both GPIOs will change the LED to amber.

LED	GPIO	Description
0	6-12	Right, Red
1	6-14	Right, Green
2	6-13	Left, Red
3	6-7	Left, Green

##Device Driver We are using the existing leds-gpio driver. This provides a standard interface for using the LEDs. The LED devices are defined in board-legoev3.c.