Pixhawk 6C Ports

• I/O PWM OUT = MAIN OUT

• FMU PWM OUT = AUX OUT

Pin 1 starts from the flight controllers "right side" like diagram below

Power1 & 2

Pin	Signal	Voltage
1(red)	VDD5V_BRICK1 (in)	+5V
2(black)	VDD5V_BRICK1 (in)	+5V
3(black)	CURRENT1	+3.3V
4(black)	VOLTAGE1	+3.3V
5(black)	GND	GND
6(black)	GND	GND

Telem 1 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2(black)	UART7_TX(out)	+3.3V
3(black)	UART7_RX(in)	+3.3V
4(black)	UART7_CTS(in)	+3.3V
5(black)	UART7_RTS(out)	+3.3V
6(black)	GND	GND

Telem 2 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2(black)	UART5_TX(out)	+3.3V
3(black)	UART5_RX(in)	+3.3V
4(black)	UART5_CTS(in)	+3.3V
5(black)	UART5_RTS(out)	+3.3V
6(black)	GND	GND

Telem 3 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2(black)	USART2_TX(out)	+3.3V
3(black)	USART2_RX(in)	+3.3V
4(black)	NOT CONNECTED*	-
5(black)	NOT CONNECTED*	-
6(black)	GND	GND

* For Pixhawk 6C with SN number XXXX 001 XXXXXX (SN can be found on the packaging), Telem3 port is connected as follow:

• pin 4 -> I2C4_SCL (3.3V)

• pin 5 -> I2C4_SDA (3.3V)

Do not connect Non-I2C device (such as telemetry radio) to telem3 pin 4 & 5 if you have this version.

GPS 1 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2 black)	TX1(out)	+3.3V
3(black)	RX1(in)	+3.3V
4(black)	SCL1	+3.3V
5(black)	SDA1	+3.3V
6(black)	SAFETY_SWITCH	+3.3V
7(black)	SAFETY_SWITCH_LED	+3.3V
8(black)	IO_VDD_3V3	+3.3V
9(black)	BUZZER-	0~5V
10(black)	GND	GND

GPS2 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2 black)	UART8_TX(out)	+3.3V
3(black)	UART8_RX(in)	+3.3V
4(black)	I2C2_SCL	+3.3V
5(black)	I2C2_SDA	+3.3V
6(black)	GND	GND

USB Port

Pin	Signal	Voltage
1(red)	VBUS	+5V
2(black)	DM	+3.3V
3(black)	DP	+3.3V
4(black)	GND	GND

I2C Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2(black)	I2C2_SCL*	+3.3V
3(black)	I2C2_SDA*	+3.3V
4(black)	GND	GND

* For Pixhawk 6C with SN number XXXX XXX 20221100 AND prior, (SN can be found on the packaging), I2C port is connected as follow:

• pin 2 -> I2C4_SCL (3.3V)

• pin 3 -> I2C4_SDA (3.3V)

CAN1 & CAN2 Port

Pin	Signal	Voltage
1(red)	VCC	+5V
2(black)	CAN1_H	+3.3V
3(black)	CAN1_L	+3.3V
4(black)	GND	GND

DSM RC Port (JST-ZH 1.5mm)

Pin	Signal	Voltage
1(yellow)	VDD_3V3_SPEKTRUM	+3.3V
2(black)	GND	GND
3(gray)	DSM/SPEKTRUM IN	+3.3V

PPM/SBUS RC port

Pin	Signal	Voltage
1(null)	VDD_5V_PPM_SBUS	+5V
2(yellow)	PPM&SBUS_IN	+3.3V
3(null)	RSSI_IN	+3.3V
4(red)	(NOT CONNECTED)	--
5(black)	GND	GND

SBus Out Port

Pin	Signal	Voltage
1(red)	(NOT CONNECTED)	--
2(yellow)	SBUS_OUT	+3.3V
3(black)	GND	GND

FMU PWM OUT (AUX OUT)

Pin	Signal	Voltage
1 (Red)	VDD_Servo
2 (Black)	FMU_CH1	+3.3V
3 (Black)	FMU_CH2	+3.3V
4 (Black)	FMU_CH3	+3.3V
5 (Black)	FMU_CH4	+3.3V
6 (Black)	FMU_CH5	+3.3V
7 (Black)	FMU_CH6	+3.3V
8 (Black)	FMU_CH7	+3.3V
9 (Black)	FMU_CH8	+3.3V
10(Black)	GND	GND

I/O PWM OUT (MAIN OUT)

Pin	Signal	Voltage
1 (Red)	VDD_Servo
2 (Black)	IO_CH1	+3.3V
3 (Black)	IO_CH2	+3.3V
4 (Black)	IO_CH3	+3.3V
5 (Black)	IO_CH4	+3.3V
6 (Black)	IO_CH5	+3.3V
7 (Black)	IO_CH6	+3.3V
8 (Black)	IO_CH7	+3.3V
9 (Black)	IO_CH8	+3.3V
10(Black)	GND	GND

FMU Debug Port (JST SH 1mm Pitch)

Pin	Signal	Voltage
1(red)	FMU_VDD_3V3	+3.3V
2 black)	FMU_USART3_TX	+3.3V
3(black)	FMU_USART3_RX	+3.3V
4(black)	FMU_SWD_IO	+3.3V
5(black)	FMU_SWD_CK	+3.3V
6(black)	SPI6_SCK_EXTERNAL1	+3.3V
7(black)	NFC_GPIO	+3.3V
8(black)	PH11	+3.3V
9(black)	FMU_nRST	+3.3V
10(black)	GND	GND

I/O Debug Port (JST SH 1mm Pitch)

Pin	Signal	Voltage
1(red)	IO_VDD_3V3	+3.3V
2 black)	IO_USART1_TX	+3.3V
3(black)	(NOT CONNECTED)	--
4(black)	IO_SWD_IO	+3.3V
5(black)	IO_SWD_CK	+3.3V
6(black)	IO_SWO	+3.3V
7(black)	IO_SPARE_GPIO1	+3.3V
8(black)	IO_SPARE_GPIO2	+3.3V
9(black)	IO_nRST	+3.3V
10(black)	GND	GND