40 Pin GPIO

The full Raspberry Pi 40 pin GPIO is available through pads on the main board. Please note that there are some specific changes implemented that may cause issues with some hats. The UART is normally connected to the flight controller (if jumper fitted) and the I2C lines have been used for dual cameras. For more information see

Please orient using the silk screen. Designed for a 40 pin FPC 0.5mm pitch connector (not populated). Manufacturer: HDGC, Part Number: 0.5K-A-40PB, LCSC Part Number: C2914160.

LHS	RHS
3v3
	5v
GPIO 2
	5v
GPIO 3
	GND
GPIO 4
	Tx
GND
	Rx
GPIO 17
	GPIO 18
GPIO 27
	GND
GPIO 22
	GPIO 23
3v3
	GPIO 24
GPIO 10
	GND
GPIO 9
	GPIO 25
GPIO 11
	GPIO 8
GND
	GPIO 7
ID_SD
	ID_SC
GPIO 5
	GND
GPIO 6
	GPIO 12
GPIO 13
	GND
GPIO 19
	GPIO 16
GPIO 26
	GPIO 20
GND
	GPIO 21

If you are using a CBU-CM405-FC-ESC-**** Board it will cover the pads and make them not accessible. If you require use of the GPIO please use the CBU-CM405-BO which will leave them exposed.

Fitted wih a CBU-CM405-BO