Extension shield connection mapping

Extension shield revision 0.6 connection mapping

Refer to this file for detailed schematics.

Shield connection label	GPIO address (BCM)	Assigned protocol	Assigned function
LEDs (J12) B	21	PWM	Blue LEDs
LEDs (J12) F	20	PWM	Far-red LEDs
LEDs (J12) R	18	PWM	Red LEDs
Fans (J18, J19)	16	PWM	Main fans
Pump (J16)	12	PWM	Pump
Spare (J17)	19	PWM	Sensor fan
SW2	6	Button switch	Power off (press for 10 seconds)
SW3	7	Button switch	Reset configuration (press for 10 seconds)