For the complete documentation index, see llms.txt. This page is also available as Markdown.

Pinout

Pin assignments for the ARK Pixhawk Payload Bus Breakout connectors.

Payload bus

J4 — 30-pin, 0.5 mm pitch FFC

Pin
Signal
Voltage

1

GND

GND

2

UART4_TX_EXT

3.3V

3

UART4_RX_EXT

3.3V

4

GND

GND

5

I2C3_SDA_EXT

3.3V

6

I2C3_SCL_EXT

3.3V

7

GND

GND

8

CAN_P

5V

9

CAN_N

5V

10

GND

GND

11

FMU_CH7_EXT

3.3V

12

GPIO12_EXT

3.3V

13

FMU_CH8_EXT

3.3V

14

GND

GND

15

FMU_CAP_EXT

3.3V

16

GND

GND

17

PYLD_ETH_TX_P

Differential

18

PYLD_ETH_TX_N

Differential

19

GND

GND

20

PYLD_ETH_RX_P

Differential

21

PYLD_ETH_RX_N

Differential

22

GND

GND

23

GPIO01

3.3V

24

VBUS

5V

25

USB_N

3.3V

26

USB_P

3.3V

27

GND

GND

28

VDD_5V_HIGHPOWER_nEN

3.3V

29

VDD_5V_PERIPH_nEN

3.3V

30

GND

GND

G1–G6

GND

GND

Pin 28 is brought out to test point TP1 only and is not otherwise connected on this board. Pin 29 drives the enable input of the onboard protection switch through a 47 kΩ series resistor; pulling it low enables the VDD_5V_PERIPH rail.

5V input

J3 — 6-pin Molex Pico-Clasp

Pin
Signal
Voltage

1

5V

5V

2

5V

5V

3

I2C3_SCL_EXT

3.3V

4

I2C3_SDA_EXT

3.3V

5

GND

GND

6

GND

GND

UART4 / I2C3

J1 — 6-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

UART4_TX_EXT

3.3V

3

UART4_RX_EXT

3.3V

4

I2C3_SCL_EXT

3.3V

5

I2C3_SDA_EXT

3.3V

6

GND

GND

CAN

J2 — 4-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

CAN_P

5V

3

CAN_N

5V

4

GND

GND

Ethernet

J5 — 4-pin JST-GH

Pin
Signal
Voltage

1

PYLD_ETH_RX_N

Differential

2

PYLD_ETH_RX_P

Differential

3

PYLD_ETH_TX_N

Differential

4

PYLD_ETH_TX_P

Differential

The connector shell is intentionally left unconnected.

USB

J6 — 4-pin JST-GH

Pin
Signal
Voltage

1

VBUS

5V

2

USB_N

3.3V

3

USB_P

3.3V

4

GND

GND

GPIO

J7 — 7-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

FMU_CH7_EXT

3.3V

3

FMU_CH8_EXT

3.3V

4

FMU_CAP_EXT

3.3V

5

GPIO01

3.3V

6

GPIO12_EXT

3.3V

7

GND

GND