Cube Red Standard Carrier Board Pinout

Operating Conditions and Performance

Parameter

Description

Power Input Voltage/Rated Input Current

4.1 ~ 5.7V / 2.5A Note: 0 ~ 20 V is supported, but The Cube may not operate properly.

Power Rated Output/Input power

14W

USB Port Input Voltage/Rated Input Current

4 ~ 5.7V / 250mA

Servo Rail Input Voltage

4 ~ 10.5V

Waterproof Performance

Not waterproof. External waterproof protection is needed

Operational Temperature

Recommended ambient temperature: -10°C ~ 55°C.

Note: The Cube can operate within a wider range of -40°C ~ 100°C but with possible performance degradation or risks.

Ports Standard and Definition

Standard Carrier Board Ports

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 Number

Pin Type

Pin Name

Function

I/O

FMU_SWDIO

FMU serial wire debug I/O

FMU_LED_AMBER

Boot error LED (drive only, controlled by FET)

FMU_SWCLK

FMU serial wire debug clock

I/O

I2C_2_SDA

I2C serial data Tx/Rx

EXTERN_CS

Chip select for external SPI (NC, just for debugging)

I2C_2_SCL

I2C serial clock signal

FMU_!RESET

Reset pin for the FMU

I/O

CAN_L_3

CAN bus low signal driver

VDD_SERVO_IN

Power for last resort I/O failsafe

I/O

CAN_H_3

CAN bus high signal driver

EXTERN_DRDY

Interrupt pin for external SPI (NC, just for debugging)

SERIAL_5_RX

UART 5 RX (receive data)

GND

System GND

SERIAL_5_TX

UART 5 TX (transmit data)

GND

System GND

SERIAL_4_RX

UART 4 RX (receive data)

SAFETY

Safety button input

SERIAL_4_TX

UART 4 TX (transmit data)

VDD_3V3_SPEKTRUM_EN

Enable for the Spektrum voltage regulator

SERIAL_3_RX

UART 3 RX (receive data)

PRESSURE_SENS_IN

Analog signal port, for pressure sensor, laser range finder, or sonar

SERIAL_3_TX

UART 3 TX (transmit data)

AUX_BATT_VOLTAGE_SENS

Voltage sense for Aux battery input

ALARM

Buzzer PWM signal

AUX_BATT_CURRENT_SENS

Current sense for Aux battery input

IO_VDD_3V3

IO chip power, pinned through for debug

VDD_5V_PERIPH_EN

Enable voltage supply for peripherals

IO_LED_SAFET_PROT

IO-LED_SAFETY (safety LED) pinned out for IRIS

VBUS

USB VBus (VDD)

SERIAL_2_RTS

UART 2 RTS (request to send)

I/O

OTG_DP1

USB Data+ (D)

SERIAL_2_CTS

UART 2 CTS (clear to send)

I/O

OTG_DM1

USB Data- (M)

SERIAL_2_RX

UART 2 RX (receive data)

I/O

I2C_1_SDA

I2C serial data Tx/Rx

SERIAL_2_TX

UART 2 TX (transmit data)

I2C_1_SCL

I2C serial clock signal

SERIAL_1_RX

UART 1 RX (receive data)

I/O

CAN_L_2

FMU CAN bus low signal driver

SERIAL_1_TX

UART 1 TX (transmit data)

I/O

CAN_H_2

FMU CAN bus high signal driver

SERIAL_1_RTS

UART 1 RTS (request to send)

VDD_5V_PERIPH_OC

Error state message from peripheral power supply

SERIAL_1_CTS

UART 1 CTS (clear to send)

VDD_5V_HIPOWER_OC

Error state message from high power peripheral power supply

IO_USART_1_TX

I/O USART 1 TX

BATT_VOLTAGE_SENS_PROT

Voltage sense from main battery

IO_USART1_RX_SPECTRUM_DSM

Signal from Spectrum receiver

BATT_CURRENT_SENS_PROT

Current sense from main battery

FMU_CH1_PROT

FMU PWM Output Channel 1

SPI_EXT_MOSI

External SPI, for debug only

FMU_CH2_PROT

FMU PWM Output Channel 2

VDD_SERVO

VDD_Servo, for monitoring servo bus

FMU_CH3_PROT

FMU PWM Output Channel 3

VDD_BRICK_VALID

Main power valid signal

FMU_CH4_PROT

FMU PWM Output Channel 4

VDD_BACKUP_VALID

Backup power valid signal

FMU_CH5_PROT

FMU PWM Output Channel 5

VBUS_VALID

USB bus valid signal

FMU_CH6_PROT

FMU PWM Output Channel 6

VDD_5V_IN_PROT

Main power (5V) into FMU from power selection

PPM_SBUS_PROT

PPM / S.Bus signal input

VDD_5V_IN_PROT

Main power (5V) into FMU from power selection

S.BUS_OUT

S.Bus signal output

IO_VDD_5V5

IO VDD 5.5V

IO_CH8_PROT

I/O PWM Output Channel 8

SPI_EXT_MISO

External SPI, for debug only

IO_CH7_PROT

I/O PWM Output Channel 7

I/O

IO_SWDIO

I/O serial wire debug

IO_CH6_PROT

I/O PWM Output Channel 6

IO_SWCLK

I/O serial wire debug clock

IO_CH5_PROT

I/O PWM Output Channel 5

SPI_EXT_SCK

External SPI, for debug only

IO_CH4_PROT

I/O PWM Output Channel 4

IO_!RESET

I/O reset pin

IO_CH3_PROT

I/O PWM Output Channel 3

I/O

CAN_L_1

FMU CAN bus low signal driver

IO_CH2_PROT

I/O PWM Output Channel 2

I/O

CAN_H_1

FMU CAN bus high signal driver

IO_CH1_PROT

I/O PWM Output Channel 1

Connector 2 Assignments

Pin Number

Pin Type

Pin Name

Description

GND

System GND

FMU_BOOT

FMU boot

I/O

FC_NET_TX+

Ethernet TX+,Auto-MDIX support

For future use

GND

System GND

IO_BOOT

IO MCU boot

I/O

FC_NET_TX-

Ethernet TX-, Auto-MDIX support

For future use

GND

System GND

For future use

I/O

FC_NET_RX+

Ethernet RX+, Auto-MDIX support

For future use

GND

System GND

For future use

I/O

FC_NET_RX-

Ethernet RX-, Auto-MDIX support

For future use

GND

System GND

For future use

FC_NET_LEDY

Link speed LED indication

For future use

FC_NET_LEDG

Ethernet link activity LED indication

For future use

FC_NET_VCC

Ethernet 3.3V power in

For future use

Timestamp rtc

Timestamp RTC

For future use

GND

System GND

For future use

I/O

CAN_L_1

CAN bus low signal driver

For future use

I/O

CAN_H_1

CAN bus high signal driver

For future use

I/O

CAN_L_2

CAN bus low signal driver

For future use

I/O

CAN_H_2

CAN bus high signal driver

For future use

I/O

CAN_L_3

CAN bus low signal driver

For future use

I/O

CAN_H_3

CAN bus high signal driver

For future use

GND

System GND

For future use

UART8_RX

IO UART 8 RX (receive data)

For future use

UART8_TX

IO UART 8 TX (transmit data)

For future use

GND

System GND

For future use

DSI_CKP

MIPI DSI host clock postive

For future use

DSI_CKN

MIPI DSI host clock negative

For future use

GND

System GND

For future use

DSI_D0P

MIPI DSI host DATA0 postive

For future use

DSI_D0N

MIPI DSI host DATA0 negative

For future use

GND

System GND

For future use

DSI_D1P

MIPI DSI host DATA1 postive

For future use

DSI_D1N

MIPI DSI host DATA1 negative

For future use

GND

System GND

For future use

FMU_DAC

FMU analog output

For future use

IO_DAC

IO analog output

For future use

GND

System GND

For future use

VDD_5V_IN_backup

Main power (5V) into FMU from power selection

For future use

VDD_5V_IN_backup

Main power (5V) into FMU from power selection

For future use

VDD_5V_IN_backup

Main power (5V) into FMU from power selection

For future use

VDD_5V_IN_backup

Main power (5V) into FMU from power selection

For future use

Ports and Protocols

Name

Function

Label

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 IO; Debug Console

CONS

I2C 2

Independent I2C 2 port. Drivers are on-board FMU. Un-buffered, and pulled up to 3.3V COMMS TTL level

I2C2

CAN Bus

Standard CAN Bus. Drivers are on-board FMU

CAN1 CAN2 CAN3

R/C IN

Support CPPM / Futaba S.Bus signal input or any protocols supported by ArduPilot

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 Number

Name

I/O

Voltage

Cable Color

Definition

VCC_5V

OUT

5 V

Red/Gray

VCC

SERIAL_1_TX

OUT

3.3 V ~ 5.0 V TTL

Orange/Black

UART 1 TX (Transmit Data)

SERIAL_1_RX

3.3 V ~ 5.0 V TTL

Green/Black

UART 1 RX (Receive Data)

SERIAL_1_CTS (TX)

OUT

3.3 V ~ 5.0 V TTL

Gray/Black

UART 1 CTS (Clear to Send)

SERIAL_1_RTS (RX)

3.3 V ~ 5.0 V TTL

Gray/Black

UART 1 RTS (Request to Send)

GND

Black

GND

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

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VCC_5V

5 V

Red

VCC Power Supply to GPS from AP

SERIAL_3_TX

OUT

3.3 V ~ 5.0 V TTL

Black

UART 3 TX (Transmit Data)

SERIAL_3_RX

3.3 V ~ 5.0 V TTL

Black

UART 3 RX (Receive Data)

I2C_1_SCL

3.3 V

Black

I2C 1 Clock Signal

I2C_1_SDA

IN/OUT

3.3 V

Black

I2C 1 Serial Data

BUTTON

GND

Black

Signal shorted to GND on press

IO_LED_SAFET_PROT

GND

Black

LED Driver for Safety Button

GND

Black

GND

Buzzer / USB / LED | Port: `USB`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

V BUS

OUT

5 V

Red/Gray

USB V BUS

OTG_DP1

IN/OUT

3.3 V

Green/Black

USB Data Positive (D+)

OTG_DM1

IN/OUT

3.3 V

Red/Black

USB Data Minus (D-)

GND

Black

GND

BUZZER_OUT

OUT

Battery Voltage

Gray/Black

VBAT (8.4 - 42 V)

FMU_LED_AMBER

OUT

Black

Boot / Error LED (FW updates)

I2C 2 | Port: `I2C 2`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VCC_5V

OUT

5 V

Red/Gray

VCC Power Supply

I2C_2_SCL

IN/OUT

3.3 V (PULLUPS)

Blue/Black

I2C 2 Clock Signal, Pull-up on AP

I2C_2_SDA

IN/OUT

3.3 V (PULLUPS)

Green/Black

I2C 2 Serial Data, Pull-up on AP

GND

Black

GND

CAN 1 | Port: `CAN1`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VCC_5V

OUT

5 V

Red/Gray

VCC Power Supply

CAN_H_1

IN/OUT

12 V

Orange/Black

CAN High

CAN_L_1

IN/OUT

12 V

Green/Black

CAN Low

GND

Black

GND

CAN 2 | Port: `CAN2`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VCC_5V

OUT

5 V

Red/Gray

VCC Power Supply

CAN_H_2

IN/OUT

12 V

Orange/Black

CAN High

CAN_L_2

IN/OUT

12 V

Green/Black

CAN Low

GND

Black

GND

ADC | Port: `ADC`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VDD_5V_PRES

OUT

5 V

Red

Power Supply

PRESSURE_SENS_IN

Black

GND

Black

GND

IO USART 1 / DSM | Port: `SPKT`

Pin Number

Name

I/O

Voltage

Definition

IO_USART1_RX_SPECTRUM_DSM

IO USART 1 RX, DSM INPUT

GND

VDD_3V3_Spektrum

OUT

3.3 V

Independent Power Supply

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

Pin Number

Name

I/O

Voltage

Definition

1 SBUSo

S.Bus_Out

OUT

S.Bus Signal Output

2 CONS

SERIAL_8_TX

OUT

3.3 V - 5.0 V TTL

IO UART 8 TX (Transmit Data)

3 SBUSo

VDD_SERVO

OUT

Servo Voltage

4 CONS

SERIAL_8_RX

3.3 V - 5.0 V TTL

IO UART 8 RX (Receive Data)

5 SBUSo

GND

6 CONS

GND

Main Power POWER 1 | Port: `POWER1`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VDD_5V_BRICK

5 V

Red/Gray

Supply to AP from Power Brick

VDD_5V_BRICK

5 V

Red/Gray

Supply to AP from Power Brick

BATT_CURRENT_SENS_PROT

3.3 V

Black

Battery Current Connecter

BATT_CURRENT_VOLTAGE_PROT

3.3 V

Black

Battery Voltage Connecter

GND

Black

GND

Black

GND

Backup Power POWER 2 | Port: `POWER2`

Pin Number

Name

I/O

Voltage

Cable Color

Definition

VDD_5V_BRICK

5 V

Red/Gray

Supply to AP from Power Brick

VDD_5V_BRICK

5 V

Red/Gray

Supply to AP from Power Brick

AUX_BATT_CURRENT_SENS

3.3 V

Black

Aux Battery Current Connecter

AUX_BATT_VOLTAGE_SENS

3.3 V

Black

Aux Battery Voltage Connecter

GND

Black

GND Connection

GND

Black

GND

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

Pin Number

Name

I/O

Voltage

Definition

S - 1

Secondary_FMU_CH1_PROT

OUT