Cube Red Standard Carrier Board Pinout

Operating Conditions and Performance

About	Description
POWER input voltage / rated input current	4.1 - 5.7 V / 2.5 A; 0 - 20 V is safe for the system but it will not work
POWER rated output / input power	14 W
USB port input voltage / rated input current	4 - 5.7 V / 250 mA
Servo rail input voltage	4 - 10.5 V
Waterproof performance	Not waterproof. External waterproof protection is needed
Operation Temperature	-10° / 55° Ambient recommended, Each cube tested and operational from -20 to +70 degrees C

Ports Standard and Definition

Standard Carrier Board Ports Standard

Connector	Connector Type
GPS1	JST-GH 1.25 mm (8-pin)
GPS2	JST-GH 1.25 mm (6-pin)
TELEM1	JST-GH 1.25 mm (6-pin)
TELEM2	JST-GH 1.25 mm (6-pin)
I2C2	JST-GH 1.25 mm (4-pin)
USB	JST-GH 1.25 mm (6-pin)
CAN1	JST-GH 1.25 mm (4-pin)
CAN2	JST-GH 1.25 mm (4-pin)
CAN3	JST-GH 1.25 mm (4-pin)
POWER1	Molex CLIK-Mate 2mm (6-pin)
POWER2	Molex CLIK-Mate 2mm (6-pin)
ADC	JST-GH 1.25 mm (3-pin)
DSI	JST-GH 1.25 mm (15-pin)
ETH	TE Multi-purp pluh(8P)

Cube Red 80-Pin DF17 Connector

Connector 1 Assignments

Pin#	Name	I/O	Description
1	FMU_SWDIO	I/O	FMU serial wire debug I/O
2	FMU_LED_AMBER	O	Boot error LED (drive only, controlled by FET)
3	FMU_SWCLK	O	FMU serial wire debug clock
4	I2C_2_SDA	I/O	I2C Serial Data Tx/Rx
5	EXTERN_CS	O	Chip select for external SPI (NC, just for debugging)
6	I2C_2_SCL	O	I2C Serial Clock Signal
7	FMU_!RESET	I	Reset pin for the FMU
8	CAN_L_3	I/O	CAN bus Low Signal Driver
9	VDD_SERVO_IN	I	Power for last resort I/O failsafe
10	CAN_H_3	I/O	CAN bus High Signal Driver
11	EXTERN_DRDY	I	Interrupt pin for external SPI (NC, just for debugging)
12	SERIAL_5_RX	I	UART 5 RX (Receive Data)
13	GND		System GND
14	SERIAL_5_TX	O	UART 5 TX (Transmit Data)
15	GND		System GND
16	SERIAL_4_RX	I	UART 4 RX (Receive Data)
17	SAFETY		Safety button input
18	SERIAL_4_TX	O	UART 4 TX (Transmit Data)
19	VDD_3V3_SPEKTRUM_EN	O	Enable for the Spektrum voltage regulator
20	SERIAL_3_RX	I	UART 3 RX (Receive Data)
21	PRESSURE_SENS_IN	AI	Analogue Signal port, for pressure sensor, Laser range finder, or Sonar
22	SERIAL_3_TX	O	UART 3 TX (Transmit Data)
23	AUX_BATT_VOLTAGE_SENS	AI	Voltage sense for Aux battery input
24	ALARM	O	Buzzer PWM Signal
25	AUX_BATT_CURRENT_SENS	AI	Current sense for Aux battery input
26	IO_VDD_3V3	I	IO chip power, pinned through for debug
27	VDD_5V_PERIPH_EN	O	Enable voltage supply for Peripherals
28	IO_LED_SAFET_PROT	O	IO-LED_SAFETY (safety LED) pinned out for IRIS
29	VBUS	I	USB VBus (VDD)
30	SERIAL_2_RTS		UART 2 RTS (Request To Send)
31	OTG_DP1	I/O	USB Data+ (D)
32	SERIAL_2_CTS		UART 2 CTS (Clear To Send)
33	OTG_DM1	I/O	USB Data- (M)
34	SERIAL_2_RX	I	UART 2 RX (Receive Data)
35	I2C_1_SDA	I/O	I2C Serial Data Tx/Rx
36	SERIAL_2_TX	O	UART 2 TX (Transmit Data)
37	I2C_1_SCL	O	I2C Serial Clock Signal
38	SERIAL_1_RX	I	UART 1 RX (Receive Data)
39	CAN_L_2	I/O	FMU CAN bus Low Signal Driver
40	SERIAL_1_TX	O	UART 1 TX (Transmit Data)
41	CAN_H_2	I/O	FMU CAN bus High Signal Driver
42	SERIAL_1_RTS		UART 1 RTS (Request To Send)
43	VDD_5V_PERIPH_OC	I	Error state message from Peripheral power supply
44	SERIAL_1_CTS		UART 1 CTS (Clear To Send)
45	VDD_5V_HIPOWER_OC	I	Error state message from High power Peripheral power supply
46	IO_USART_1_TX	O	I/O USART 1 TX
47	BATT_VOLTAGE_SENS_PROT	AI	Voltage sense from main battery
48	IO_USART1_RX_SPECTRUM_DSM	O	Signal from Spectrum receiver
49	BATT_CURRENT_SENS_PROT	AI	Current sense from main battery
50	FMU_CH1_PROT	O	FMU PWM output channel 1
51	SPI_EXT_MOSI	O	External SPI, for debug only
52	FMU_CH2_PROT	O	FMU PWM output channel 2
53	VDD_SERVO	I	VDD_Servo, for monitoring servo bus
54	FMU_CH3_PROT	O	FMU PWM Output Channel 3
55	VDD_BRICK_VALID	I	Main Power valid signal
56	FMU_CH4_PROT	O	FMU PWM Output Channel 4
57	VDD_BACKUP_VALID	I	Backup Power valid Signal
58	FMU_CH5_PROT	O	FMU PWM Output Channel 5
59	VBUS_VALID	I	USB bus valid signal
60	FMU_CH6_PROT	O	FMU PWM Output Channel 6
61	VDD_5V_IN_PROT	I	Main power (5V) into FMU from power selection
62	PPM_SBUS_PROT	I	PPM / S.Bus Signal Input
63	VDD_5V_IN_PROT	I	Main power (5V) into FMU from power selection
64	S.BUS_OUT	O	S.Bus Signal Output
65	IO_VDD_5V5	O	IO VDD 5.5 V
66	IO_CH8_PROT	O	I/O PWM Output Channel 8
67	SPI_EXT_MISO	I	External SPI, for Debug only
68	IO_CH7_PROT	O	I/O PWM Channel 7
69	IO_SWDIO	I/O	I/O serial wire debug
70	IO_CH6_PROT	O	I/O PWM Output Channel 6
71	IO_SWCLK	O	I/O Serial Wire Debug Clock
72	IO_CH5_PROT	O	I/O PWM Output Channel 5
73	SPI_EXT_SCK	O	External SPI, for Debug only
74	IO_CH4_PROT	O	I/O PWM Output Channel 4
75	IO_!RESET	I	I/O Reset Pin
76	IO_CH3_PROT	O	I/O PWM Output Channel 3
77	CAN_L_1	I/O	FMU CAN bus Low Signal Driver
78	IO_CH2_PROT	O	I/O PWM Output Channel 2
79	CAN_H_1	I/O	FMU CAN bus High Signal Driver
80	IO_CH1_PROT	O	I/O PWM Output Channel 1

Connector 2 Assignments

Pin#	Name	I/O	Description
1	GND		System GND
2	FMU_BOOT	I	FMU Boot
3	FC_NET_TX+	I/O	Ethernet TX+,Auto-MDIX support
4	NC		Use for future
5	GND
6	IO_BOOT		IO MCU BOOT
7	FC_NET_TX-	I/O	Ethernet TX-,Auto-MDIX support
8	NC		Use for future
9	GND		System GND
10	NC		Use for future
11	FC_NET_RX+	I/O	Ethernet RX+,Auto-MDIX support
12	NC		Use for future
13	GND		System GND
14	NC		Use for future
15	FC_NET_RX-	I/O	Ethernet RX-,Auto-MDIX support
16	NC		Use for future
17	GND		System GND
18	NC		Use for future
19	FC_NET_LEDY	O	Link Speed LED Indication
20	NC		Use for future
21	FC_NET_LEDG	O	Ethernet Link activity LED Indication
22	NC		Use for future
23	FC_NET_VCC	I	Ethernet 3.3V Power in
24	NC		Use for future
25	Timestamp rtc	I	Timestamp RTC
26	NC		Use for future
27	GND		System GND
28	NC		Use for future
29	CAN_L_1	I/O	CAN bus Low Signal Driver
30	NC		Use for future
31	CAN_H_1	I/O	CAN bus High Signal Driver
32	NC		Use for future
33	CAN_L_2	I/O	CAN bus Low Signal Driver
34	NC		Use for future
35	CAN_H_2	I/O	CAN bus High Signal Driver
36	NC		Use for future
37	CAN_L_3	I/O	CAN bus Low Signal Driver
38	NC		Use for future
39	CAN_H_3	I/O	CAN bus High Signal Driver
40	NC		Use for future
41	GND		System GND
42	NC		Use for future
43	UART8_RX	I	IO UART 8 RX (Receive Data)
44	NC		Use for future
45	UART8_TX	O	IO UART 8 TX (Transmit Data)
46	NC		Use for future
47	GND		System GND
48	NC		Use for future
49	DSI_CKP	O	MIPI DSI Host Clock Postive
50	NC		Use for future
51	DSI_CKN	O	MIPI DSI Host Clock Negative
52	NC		Use for future
53	GND		System GND
54	NC		Use for future
55	DSI_D0P	O	MIPI DSI Host DATA0 Postive
56	NC		Use for future
57	DSI_D0N	O	MIPI DSI Host DATA0 Negative
58	NC		Use for future
59	GND		System GND
60	NC		Use for future
61	DSI_D1P	O	MIPI DSI Host DATA1 Postive
62	NC		Use for future
63	DSI_D1N	O	MIPI DSI Host DATA1 Negative
64	NC		Use for future
65	GND		System GND
66	NC		Use for future
67	FMU_DAC	O	FMU Analogue output
68	NC		Use for future
69	IO_DAC	O	IO Analogue output
70	NC		Use for future
71	GND		System GND
72	NC		Use for future
73	VDD_5V_IN_backup	I	Main power (5V) into FMU from power selection
74	NC		Use for future
75	VDD_5V_IN_backup	I	Main power (5V) into FMU from power selection
76	NC		Use for future
77	VDD_5V_IN_backup	I	Main power (5V) into FMU from power selection
78	NC		Use for future
79	VDD_5V_IN_backup	I	Main power (5V) into FMU from power selection
80	NC		Use for future

Ports and Protocols

Name	Function	Marking
SERIAL 1 / UART 1	UART 1 with hardware flow control. 3.3V-5V CMOS TTL level, with ESD protection	TELEM1
SERIAL 2 / UART 2	UART 2 with hardware flow control. 3.3V-5V CMOS TTL level, with ESD protection	TELEM2
SERIAL 3 / UART 3 / I2C 1	3.3V-5V CMOS TTL level, with ESD protection	GPS1
SERIAL 4 / UART 4 / I2C 2	UART 4 / I2C 2, 3.3V-5V CMOS TTL level, with ESD protection	GPS2
SERIAL 8 / UART 8 (Debug Console)	UART 8 on secondary，Debug Console	CONS
I2C 2	Independent I2C 2 port. Drivers are on-board on FMU. UN-buffered, and pulled up to 3.3V COMMS TTL level	I2C2
CAN Bus	Standard CAN Bus. Drivers are on-board on FMU.	CAN1 CAN2 CAN3
R/C IN	Support CPPM / Futaba S.Bus signal input or any protocol Ardupilot adds support for	RCIN_FMU1 RCIN_FMU2
DSM / USART	Support Spektrum DSM® Technology, Spektrum DSM2™ / DSMX™ compatible input; I/O USART 1 RX	SKPT
S.Bus OUT / RSSI IN	S.Bus Servo I/O. PPM Output. Can be used as RSSI input	SBUSo
POWER	Main Power source and Backup Power source Input	POWER1 POWER2
MAIN OUT	Secondary FMU 8 x PWM/BDSHOT/RELAY	MAIN OUT
AUX OUT	Primary FMU 6 x PWM/BDSHOT/RELAY	AUX OUT
USB	LED, Speaker and USB extension	USB
ADC	3.3 V ADC Input	ADC
SPI	Built-in SPI port, with NO buffer, can only use short cable for connection. Not recommended for use.	Built-in contact point
Debug	I/O and FMU Testing Port	Built-in port
ETH	Ethernet Port
DSI	MIPI DSI output and Timestamp,FMU/IO BOOT

Carrier Board Port Interface and Pin Label

SERIAL 1 / UART 1 | Port: TELEM1

Pin #	Name	I/O	Voltage	Wire Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC
2	SERIAL_1_TX	OUT	3.3 V - 5.0 V TTL	Orange+/BLACK	UART 1 TX (Transmit Data)
3	SERIAL_1_RX	IN	3.3 V - 5.0 V TTL	GREEN/BLACK	UART 1 RX (Receive Data)
4	SERIAL_1_CTS (TX)	OUT	3.3 V - 5.0 V TTL	GRAY/BLACK	UART 1 CTS (Clear To Send)
5	SERIAL_1_RTS (RX)	IN	3.3 V - 5.0 V TTL	GRAY/BLACK	UART 1 RTS (Request To Send)
6	GND		GND	BLACK	GND

SERIAL 3 / UART 3 (GPS) / I2C 1 | Port: GPS1

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	IN	5 V	RED	VCC Power Supply To GPS From AP
3	SERIAL_3_TX	OUT	3.3 V - 5.0 V TTL	BLACK	UART 3 TX (Transmit Data)
2	SERIAL_3_RX	IN	3.3 V - 5.0 V TTL	BLACK	UART 3 RX (Receive Data)
4	I2C_1_SCL	IN	3.3 V	BLACK	I2C 1 Clock Signal
5	I2C_1_SDA	IN/OUT	3.3 V	BLACK	I2C 1 Serial Data
6	BUTTON		GND	BLACK	Signal shorted to GND on press
7	IO_LED_SAFET_PROT		GND	BLACK	LED Driver For Safety Button
8	GND		GND	BLACK	GND

Buzzer / USB / LED | Port: USB

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	V BUS	OUT	5 V	RED/GRAY	USB V BUS
2	OTG_DP1	IN/OUT	3.3 V	GREEN/BLACK	USB Data Positive (D+)
3	OTG_DM1	IN/OUT	3.3 V	RED/BLACK	USB Data Minus (D-)
4	GND		GND	BLACK	GND
5	BUZZER_OUT	OUT	Battery Voltage	GRAY/BLACK	VBAT (8.4 - 42 V)
6	FMU_LED_AMBER	OUT		BLACK	Boot / Error LED (FW updates)

I2C 2 | Port: I2C 2

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC Power Supply
2	I2C_2_SCL	IN/OUT	3.3 V (PULLUPS)	BLUE/BLACK	I2C 2 Clock Signal, Pull-up on AP
3	I2C_2_SDA	IN/OUT	3.3 V (PULLUPS)	GREEN/BLACK	I2C 2 Serial Data, Pull-up on AP
4	GND		GND	BLACK	GND

CAN 1 | Port: CAN1

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC Power Supply
2	CAN_H_1	IN/OUT	12 V	Orange+/BLACK	CAN High
3	CAN_L_1	IN/OUT	12 V	GREEN/BLACK	CAN Low
4	GND		GND	BLACK	GND

CAN 2 | Port: CAN2

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC Power Supply
2	CAN_H_2	IN/OUT	12 V	Orange+/BLACK	CAN High
3	CAN_L_2	IN/OUT	12 V	GREEN/BLACK	CAN Low
4	GND		GND	BLACK	GND

ADC | Port: ADC

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VDD_5V_PRES	OUT	5 V	RED	Power Supply
2	PRESSURE_SENS_IN	IN		BLACK
3	GND		GND	BLACK	GND

IO USART 1 / DSM | Port: SPKT

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	IO_USART1_RX_SPECTRUM_DSM	IN			IO USART 1 RX, DSM INPUT
2	GND		GND		GND
3	VDD_3V3_Spektrum	OUT	3.3 V		Independent Power Supply

SERIAL 8/ UART 8 / S.Bus OUT | Port: CONS SBUSo

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1 SBUSo	S.Bus_Out	OUT			S.Bus Signal Output
2 CONS	SERIAL_8_TX	OUT	3.3 V - 5.0 V TTL		UART 8 TX (Transmit Data)
3 SBUSo	VDD_SERVO	OUT	Servo Voltage
4 CONS	SERIAL_8_RX	IN	3.3 V - 5.0 V TTL		UART 8 RX (Receive Data)
5 SBUSo	GND		GND		GND
6 CONS	GND		GND		GND

Main Power POWER 1 | Port: POWER1

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VDD_5V_BRICK	IN	5 V	RED/GRAY	Supply To AP from Power Brick
2	VDD_5V_BRICK	IN	5 V	RED/GRAY	Supply To AP from Power Brick
3	BATT_CURRENT_SENS_PROT		3.3 V	BLACK	Battery Current Connecter
4	BATT_CURRENT_VOLTAGE_PROT	IN	3.3 V	BLACK	Battery Voltage Connecter
5	GND		GND	BLACK	GND
6	GND		GND	BLACK	GND

Backup Power POWER 2 | Port: POWER2

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VDD_5V_BRICK	IN	5 V	RED/GRAY	Supply To AP from Power Brick
2	VDD_5V_BRICK	IN	5 V	RED/GRAY	Supply To AP from Power Brick
3	AUX_BATT_CURRENT_SENS		3.3 V	BLACK	Aux Battery Current Connecter
4	AUX_BATT_VOLTAGE_SENS	IN	3.3 V	BLACK	Aux Battery Voltage Connecter
5	GND		GND	BLACK	GND Connection
6	GND		GND	BLACK	GND

CPPM / S.BUS / SERVO SYSTEM | Port: RCIN MAIN OUT AUX OUT

Pin #	Name	I/O	Voltage	Definition
S - 1	Secondary_FMU_CH1_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 2	Secondary_FMU_CH2_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 3	Secondary_FMU_CH3_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 4	Secondary_FMU_CH4_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 5	Secondary_FMU_CH5_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 6	Secondary_FMU_CH6_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 7	Primary_FMU_CH1_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 8	Primary_FMU_CH2_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 9	Primary_FMU_CH3_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 10	Primary_FMU_CH4_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 11	Primary_FMU_CH5_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 12	Primary_FMU_CH6_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 13	Primary_FMU_CH7_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 14	Primary_FMU_CH8_PROT	OUT	3.3 V Servo Signal, Servo Rail Power	PWM Signal
S - 15	PPM_SBUS_PROT	IN/OUT	3.3 V / 4.5 V Powered	PPM / S.Bus Signal, goes to both Primary and Secondary FMU's

SERIAL 2 / UART 2 | Port: TELEM2

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC
2	SERIAL_2_TX	OUT	3.3 V - 5.0 V TTL	Orange+/BLACK	UART 2 TX (Transmit Data)
3	SERIAL_2_RX	IN	3.3 V - 5.0 V TTL	GREEN/BLACK	UART 2 RX (Receive Data)
4	SERIAL_2_CTS (TX)	OUT	3.3 V - 5.0 V TTL	GRAY/BLACK	UART 2 CTS (Clear To Send)
5	SERIAL_2_RTS (RX)	IN	3.3 V - 5.0 V TTL	GRAY/BLACK	UART 2 RTS (Request To Send)
6	GND		GND	BLACK	GND

SERIAL 4 / UART 4 / I2C 2 | Port: GPS2

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC Power Supply To GPS From AP
2	SERIAL_4_TX	OUT	3.3 V - 5.0 V TTL	Orange+/BLACK	UART 4 TX (Transmit Data)
3	SERIAL_4_RX	IN	3.3 V - 5.0 V TTL	GREEN/BLACK	UART 4 RX (Receive Data)
4	I2C_2_SCL	OUT	3.3 V - 5.0 V	GRAY/BLACK	I2C 2 Clock Signal
5	I2C_2_SDA	IN	3.3 V - 5.0 V	GRAY/BLACK	I2C 2 Serial Data
6	GND		GND	BLACK	GND

CAN 3 | Port: CAN3

Pin #	Name	I/O	Voltage	Cable Colour	Definition
1	VCC_5V	OUT	5 V	RED/GRAY	VCC Power Supply
2	CAN_H_2	IN/OUT	12 V	Orange+/BLACK	CAN High
3	CAN_L_2	IN/OUT	12 V	GREEN/BLACK	CAN Low
4	GND		GND	BLACK	GND

Ethernet: ETH1

Pin #	Name	I/O	Descrption
1	TXP/RXP	IN/OUT	Ethernet TXP/RXP Auto-MDIX support
2	TXN/RXN	IN/OUT	Ethernet TXN/RXN Auto-MDIX support
3	RXP/TXP	IN/OUT	Ethernet RXP/TXP Auto-MDIX support
4	NC		No connect
5	NC		No connect
6	RXN/TXN	IN/OUT	Ethernet RXN/TXN Auto-MDIX support
7	NC		No connect
8	NC		No connect

DSI / Timestamp / Boot| Port: DSI

Pin #	Name	I/O	Definition
1	IO_BOOT_0	OUT	IO BOOT
2	FMU_BOOT_0	OUT	FMU BOOT
3	TIMESTAMP_RTC	OUT	TIMESTAMP
4	GND		GND
5	DSI_CKP	OUT	MIPI DSI Host Clock Postive
6	DSI_CKN	OUT	MIPI DSI Host Clock Negative
7	GND		GND
8	DSI_D0P	OUT	MIPI DSI Host DATA 0 Postive
9	DSI_D0N	OUT	MIPI DSI Host DATA 0 Negative
10	GND		GND
11	DSI_D1P	OUT	MIPI DSI Host DATA 1 Postive
12	DSI_D1N	OUT	MIPI DSI Host DATA 1 Negative
13	GND		GND
14	IO_DAC	OUT	IO Analog output
15	FMU_DAC	OUT	FMU Analong output

Page available for revision and updating through the Github link below: https://github.com/CubePilot/cubepilot-docs/blob/master/carrier-boards/cube-red-standard-carrier-board-pinout.md