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Pinout

Pin assignments for the ARK Secondary Avionics Adapter connectors.

Secondary avionics port

J3 — 40-pin Molex Pico-Clasp secondary avionics port

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

SPI6_DRDY1_EXT

3.3V

3

SPIX_nSYNC_EXT

3.3V

4

GND

GND

5

SPI6_SCK_EXT

3.3V

6

SPI6_MOSI_EXT

3.3V

7

GND

GND

8

SPI6_nCS1_EXT

3.3V

9

USART2_RX_TELEM3_EXT

3.3V

10

SPI6_nRESET_EXT

3.3V

11

USART2_TX_TELEM3_EXT

3.3V

12

SPI6_MISO_EXT

3.3V

13

VDD_5V_SBUS_RC

5V

14

GND

GND

15

VDD_SERVO_SENSE

5V

16

IO_SBUS_OUTPUT_EXT

3.3V

17

GND

GND

18

UART8_TX_GPS2_EXT

3.3V

19

I2C2_SCL_BASE_GPS2_EXT

3.3V

20

UART8_RX_GPS2_EXT

3.3V

21

I2C2_SDA_BASE_GPS2_EXT

3.3V

22

VDD_5V_PERIPH

5V

23

GND

GND

24

GND

GND

25

IO_CH1_EXT

3.3V

26

IO_CH5_EXT

3.3V

27

IO_CH2_EXT

3.3V

28

IO_CH6_EXT

3.3V

29

IO_CH3_EXT

3.3V

30

IO_CH7_EXT

3.3V

31

IO_CH4_EXT

3.3V

32

IO_CH8_EXT

3.3V

33

GND

GND

34

VDD_5V_SBUS_RC

5V

35

JCAN_P

5V

36

GND

GND

37

JCAN_N

5V

38

GND

GND

39

GND

GND

40

VDD_5V_PERIPH

5V

SPI

J1 — 11-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

SPI6_SCK_EXT

3.3V

3

SPI6_MISO_EXT

3.3V

4

SPI6_MOSI_EXT

3.3V

5

SPI6_nCS1_EXT

3.3V

6

Not connected

7

SPIX_nSYNC_EXT

3.3V

8

SPI6_DRDY1_EXT

3.3V

9

Not connected

10

SPI6_nRESET_EXT

3.3V

11

GND

GND

GPS2

J2 — 6-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

UART8_TX_GPS2_EXT

3.3V

3

UART8_RX_GPS2_EXT

3.3V

4

I2C2_SCL_BASE_GPS2_EXT

3.3V

5

I2C2_SDA_BASE_GPS2_EXT

3.3V

6

GND

GND

JCAN

J4 — 4-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

JCAN_P

5V

3

JCAN_N

5V

4

GND

GND

SBUS out

J5 — 3-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_SBUS_RC

5V

2

IO_SBUS_OUTPUT_EXT

3.3V

3

GND

GND

PWM

J6 — 10-pin JST-GH

Pin
Signal
Voltage

1

VDD_SERVO_SENSE

9.9V Max

2

IO_CH1_EXT

3.3V

3

IO_CH2_EXT

3.3V

4

IO_CH3_EXT

3.3V

5

IO_CH4_EXT

3.3V

6

IO_CH5_EXT

3.3V

7

IO_CH6_EXT

3.3V

8

IO_CH7_EXT

3.3V

9

IO_CH8_EXT

3.3V

10

GND

GND

TELEM3

J7 — 6-pin JST-GH

Pin
Signal
Voltage

1

VDD_5V_PERIPH

5V

2

USART2_TX_TELEM3_EXT

3.3V

3

USART2_RX_TELEM3_EXT

3.3V

4

Not connected

5

Not connected

6

GND

GND

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