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40 Pin GPIO

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Last updated 2 years ago

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