Pixhawk Adapter Board

The Pixhawk adapter board is used to break out the Skynode flight control interfaces on J3 and J4 to connectors and pinouts compatible to the Pixhawk-standard.

Connector Locations

3D model mockup

Schematic

Pixhawk Adapter RC05
Pixhawk Adapter RC06

Take a look at the Skynode Harwdare Revision 11 release notes for details about the changes.

Connectors

ID

Name

Connector

Description

J11

Primary

Molex Pico-Clasp 5015714007

Connect to Skynode Primary (J4)

J12

Telem 1

JST GH 6-pin

SM06B-GHS-TB

J13

GPS 1

JST GH 10-pin

SM10B-GHS-TB

(until rev 5 included) JST GH 11-pin

SM11B-GHS-TB (from rev 6 included)

Primary GPS with external compass, safety switch and led

J14

CAN 1

JST GH 4-pin

SM04B-GHS-TB

J15

FMU

Pin Header

TSW-108-08-G-T-RA

PWM channels from FMU, input capable

J16

SBUS RC

JST GH 3-pin

SM03B-GHS-TB

SBUS protocol RC input

J18

I2C 1

JST GH 4-pin

SM04B-GHS-TB

ID

Name

Connector

Description

J21

Secondary

Molex Pico-Claspre team is looki 5015714007

Connect to Skynode Secondary (J3)

J22

SBUS OUT

JST GH 3-pin

SM03B-GHS-TB

SBUS output

J23

GPS 2

JST GH 6-pin

SM06B-GHS-TB

Redundant GPS

J24

SPI

JST GH 11-pin

SM11B-GHS-TB

J25

IO

Pin Header

TSW-108-08-G-T-RA

PWM channels from IO

J26

Telem 3

JST GH 6-pin

SM06B-GHS-TB

J27

CAN 2

JST GH 4-pin

SM04B-GHS-TB

J28

I2C 2

JST GH 4-pin

SM04B-GHS-TB

Pinouts

Telem 1 (J12)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_HIPOWER

5V

5V supply for peripherals, max. 1.0A (fused)

2

UART7_TX

OUT

3.3V

Telem 1 TX

3

UART7_RX

IN

3.3V

Telem 1 RX

4

UART7_CTS

IN

3.3V

Telem 1 CTS

5

UART7_RTS

OUT

3.3V

Telem 1 RTS

6

GND

Ground

GPS 1(J13)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_CAN1_GPS1

5V

5V supply for primary GPS and CAN interface

2

USART1_TX

OUT

3.3V

GPS 1 TX

3

USART1_RX

IN

3.3V

GPS 1 RX

4

I2C1_SCL

I/O

3.3V

I2C SCL for external magnetometer

5

I2C1_SDA

I/O

3.3V

I2C SDA for external magnetometer

6

GPS_PPS

IN

3.3V

PPS signal from GPS module

7

FMU_IO_SAFETY_SWITCH_IN

IN

3.3V

Safety switch state input

8

FMU_IO_nSAFETY_SWITCH_LED_OUT

OUT

3.3V

Safety switch led output

9

FMU_VDD_3V3

OUT

3.3V

3.3V supply for peripherals, max 50mA

10

BUZZER_1_INV

OUT

Buzzer output (open drain)

11

GND

Ground

I2C lines are pulled up with 1kΩ in Skynode. External pull up resistors shall not be added.

The highlighted pin 6 was added in rev 6 of the Pixhawk Adapter Board, to ensure compatibility with the PX4 F9P GPS module. For backwards compatibility with the Freefly RTK GPS module, a custom cable needs to be made.

CAN 1 (J14)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_CAN1_GPS1

5V

5V supply for primary GPS and CAN interface

2

CAN1_P

I/O

5V

FMU CAN 1

3

CAN1_N

I/O

5V

FMU CAN 1

6

GND

Ground

FMU - ESC and Servo (J15)

Pin

Name

Dir

Lvl

PWM/

OneShot

DShot

Shared with PPB

1

FMU_CH1

I/O

3.3V

Yes

Yes

2

FMU_CH2

I/O

3.3V

Yes

Yes

3

FMU_CH3

I/O

3.3V

Yes

Yes

4

FMU_CH4

I/O

3.3V

Yes

Yes

5

FMU_CH5

I/O

3.3V

Yes

Yes

6

FMU_CH6

I/O

3.3V

Yes

Yes

7

FMU_CH7

I/O

3.3V

Yes

Yes

8

FMU_CH8

I/O

3.3V

Yes

Yes

SBUS RC (J16)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_SBUS_RC

5V

5V supply for RC receiver, max 250mA

2

IO_SBUS_INPUT

IN

3.3V

SBUS protocol RC input

3

GND

Ground

I2C 1 (J18)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_CAN1_GPS1

5V

5V supply for primary GPS and CAN interface

2

I2C1_SCL

I/O

3.3V

I2C SCL for external peripherals

3

I2C1_SDA

I/O

3.3V

I2C SDA for external peripherals

6

GND

Ground

I2C lines are pulled up with 1kΩ in Skynode. External pull up resistors shall not be added.

SBUS OUT (J22)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_SBUS_RC

Not connected

2

IO_SBUS_OUTPUT

OUT

3.3V

SBUS protocol output

3

GND

Ground

GPS 2 (J23)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_PERIPH

5V

5V supply for peripherals

2

USART8_TX

OUT

3.3V

GPS 2 TX

3

USART8_RX

IN

3.3V

GPS 2 RX

4

I2C2_SCL

I/O

3.3V

I2C SCL for external magnetometer

5

I2C2_SDA

I/O

3.3V

I2C SDA for external magnetometer

6

GND

Ground

I2C lines are pulled up with 1kΩ in Skynode. External pull up resistors shall not be added.

SPI (J24)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_PERIPH

2

SPI6_SCK

OUT

3.3V

SPI Clock

3

SPI6_MISO

IN

3.3V

SPI MISO

4

SPI6_MOSI

OUT

3.3V

SPI MOSI

5

SPI6_nCS1

OUT

3.3V

Chip select 1

6

NC

7

SPI6_nSYNC

OUT

3.3V

Sync signal

8

SPI6_DRDY1

IN

3.3V

Data ready 1

9

NC

10

SPI6_nRESET

OUT

3.3V

Reset

11

GND

IO - ESC and Servo (J25)

Pin

Name

Dir

Lvl

PWM/

OneShot

DShot

Shared with

PPB

1

IO_CH1

OUT

3.3V

Yes

2

IO_CH2

OUT

3.3V

Yes

3

IO_CH3

OUT

3.3V

Yes

4

IO_CH4

OUT

3.3V

Yes

5

IO_CH5

OUT

3.3V

Yes

6

IO_CH6

OUT

3.3V

Yes

7

IO_CH7

OUT

3.3V

Yes

8

IO_CH8

OUT

3.3V

Yes

Telem 3 (J26)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_PERIPH

5V

5V supply for peripherals

2

USART2_TX

OUT

3.3V

Telem 3 TX

3

USART2_RX

IN

3.3V

Telem 3 RX

4

NC

5

NC

6

GND

Ground

CAN 2 (J27)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_PERIPH

5V

5V supply for peripherals

2

CAN2_P

I/O

5V

FMU CAN 2

3

CAN2_N

I/O

5V

FMU CAN 2

6

GND

Ground

I2C 2 (J28)

Pin

Name

Dir

Lvl

Function

1

VDD_5V_PERIPH

5V

5V supply for peripherals

2

I2C2_SCL

I/O

3.3V

I2C SCL for external peripherals

3

I2C2_SDA

I/O

3.3V

I2C SDA for external peripherals

6

GND

Ground

I2C lines are pulled up with 1kΩ in Skynode. External pull up resistors shall not be added.

Last updated

#145: Add GPS denied

Change request updated