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Pinout

PreviousARK FPVNextPX4 Instructions

Last updated 3 days ago

UART Port Mapping

UART
Connector
PX4 name
Nuttx tty

USART1

GPS

GPS1

/dev/ttyS0

USART2

VTX

Telem3

/dev/ttyS1

USART3

Debug

Debug

/dev/ttyS2

UART4

PWM

UART4

/dev/ttyS3

UART5

VTX

Telem2

/dev/ttyS4

USART6

RC

USART6

/dev/ttyS5

UART7

Telem

Telem1

/dev/ttyS6

PWM UART4 - 8 Pin JST-GH

Pin Number
Signal Name
Voltage

1

VBAT IN

5.5V-54V

2

CURR_IN_EXT

3.3V

3

UART4_RX_EXT

3.3V

4

FMU_CH1_EXT

3.3V

5

FMU_CH2_EXT

3.3V

6

FMU_CH3_EXT

3.3V

7

FMU_CH4_EXT

3.3V

8

GND

GND

RC - 4 Pin JST-GH

Pin Number
Signal Name
Voltage

1

5.0V

5.0V

2

USART6_RX_IN_EXT

3.3V

3

USART6_TX_OUTPUT_EXT

3.3V

4

GND

GND

PWM EXTRA - 6 Pin JST-SH

Pin Number
Signal Name
Voltage

1

FMU_CH5_EXT

3.3V

2

FMU_CH6_EXT

3.3V

3

FMU_CH7_EXT

3.3V

4

FMU_CH8_EXT

3.3V

5

FMU_CH9_EXT

3.3V

6

GND

GND

POWER AUX - 3 Pin JST-GH

Pin Number
Signal Name
Voltage

1

12.0V

12.0V

2

GND

GND

3

VBAT IN/OUT

5.5V-54V

CAN - 4 Pin JST-GH

Pin Number
Signal Name
Voltage

1

5.0V

5.0V

2

CAN1_P

5.0V

3

CAN1_N

5.0V

4

GND

GND

GPS - 6 Pin JST-GH

Pin Number
Signal Name
Voltage

1

5.0V

5.0V

2

USART1_TX_GPS1_EXT

3.3V

3

USART1_RX_GPS1_EXT

3.3V

4

I2C1_SCL_GPS1_EXT

3.3V

5

I2C1_SDA_GPS1_EXT

3.3V

6

GND

GND

TELEM - 6 Pin JST-GH

Pin Number
Signal Name
Voltage

1

5.0V

5.0V

2

UART7_TX_TELEM1_EXT

3.3V

3

UART7_RX_TELEM1_EXT

3.3V

4

UART7_CTS_TELEM1_EXT

3.3V

5

UART7_RTS_TELEM1_EXT

3.3V

6

GND

GND

VTX - 6 Pin JST-GH

Pin Number
Signal Name
Voltage

1

12.0V

12.0V

2

GND

GND

3

UART5_TX_TELEM2_EXT

3.3V

4

UART5_RX_TELEM2_EXT

3.3V

5

USART2_RX_TELEM3_EXT

3.3V

6

GND

GND

SPI (OSD or IMU) - 8 Pin JST-SH

Pin Number
Signal Name
Voltage

1

5.0V

5.0V

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

SPI6_DRDY1_EXT

3.3V

7

SPI6_nRESET_EXT

3.3V

8

GND

GND

Flight Controller Debug - 6 Pin JST-SH

Pin Number
Signal Name
Voltage

1

3V3_FMU

3.3V

2

USART3_TX_DEBUG

3.3V

3

USART3_RX_DEBUG

3.3V

4

FMU_SWDIO

3.3V

5

FMU_SWCLK

3.3V

6

GND

GND

ARK FPV Flight Controller Top
ARK FPV Flight Controller Bottom