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Mini Carrier Board

Working Conditions and Performance

About
Description
POWER input voltage / rated input current
4-5.7V / 2.5A; 0-20V is safe for the system but it will not work
POWER rated output / input power
14 W
USB port input voltage / rated input current
4-5.7V / 250mA
Servo rail input voltage
4-10.5V
Waterproof
Not waterproof. External waterproof protection is needed
Working temperature
-10°C / 55°C

Size and Specifications

Type
Description
Mini Carrier Board Size / Chassis Material
47.5x38.5x17.8 (mm) / ABS Molding
​
​

Interfaces and Definitions

Pinout
Red dot on plug side denotes pin 1

Mini Carrier Board Interface Model

Ports
Corresponding Connecter Model
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)
I2C
JST-GH 1.25 mm (4-pin)
CAN2
JST-GH 1.25 mm (4-pin)
POWER1
Molex CLIK-Mate 2 mm (6-pin)
POWER2
Molex CLIK-Mate 2 mm (6-pin)
BUZZER
DF13 1.25 mm (2-pin)

Mini Cube 80-pin DF17 Connector Assignments (same as the Cube Black)

Pin #
Name
Direction
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 data I/O
5
EXTERN_CS
O
Chip select for external SPI (NC, just for debugging)
6
I2C_2_SCL
O
I2C clock
7
FMU_!RESET
I
Reset pin for the FMU
8
PROT_SPARE_1
​
Spare
9
VDD_SERVO_IN
I
Power for last resort I/O failsafe
10
PROT_SPARE_2
​
Spare
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 spectrum voltage supply
20
SERIAL_3_RX
I
UART 3 RX (Receive Data)
21
PRESSURE_SENS_IN
AI
Analogue port, for pressure sensor, or 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 debugging
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+
32
SERIAL_2_CTS
​
UART 2 CTS (Clear To Send)
33
OTG_DM1
I/O
USB Data-
34
SERIAL_2_RX
I
UART 2 RX (Receive Data)
35
I2C_1_SDA
I/O
I2C data I/O
36
SERIAL_2_TX
O
UART 2 TX (Transmit Data)
37
I2C_1_SCL
O
I2C clock
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 output 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

Serial Ports Parameter and power distribution

SERIAL 1 / UART 1 | Connector： TELEM1
Pin #
Name
Direction
Voltage
Wire Color
Caption
1
VCC_5V
OUT
5 V
RED/GRAY
VCC
2
SERIAL_1_TX
OUT
3.3 V - 5.0 V TTL
YELLOW/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 2 / UART 2 | Connector： TELEM2

Pin #
Name
Direction
Voltage
Wire Color
Caption
1
VCC_5V
OUT
5 V
RED/GRAY
VCC
2
SERIAL_2_TX
OUT
3.3 V - 5.0 V TTL
YELLOW/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 3 / UART 3 (GPS) / I2C 1 | Connector： GPS1

Pin #
Name
Direction
Voltage
Wire Color
Caption
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 Connection

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

Pin
Name
Direction
Voltage
Wire Color
Caption
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
YELLOW/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

Buzzer | Connector： BUZZER

Pin #
Name
Direction
Voltage
Wire Color
Caption
1
BUZZER
OUT
Battery voltage
GRAY/BLACK
VBAT (8.4 - 42 V)
2
GND
​
GND
BLACK
GND Connection

I2C 2 | Connector： I2C 2

Pin
Name
Direction
Voltage
Wire Color
Caption
1
VCC_5V
OUT
+5 V
RED/GRAY
Power supply
2
SCL
IN/OUT
+3.3 V (PULLUPS)
BLUE/BLACK
SCL, 5 V level, pull-up on AP
3
SDA
IN/OUT
+3.3 V (PULLUPS)
GREEN/BLACK
SDA, 5 V level, pull-up on AP
4
GND
​
GND
BLACK
GND Connection

Main Power POWER 1 | Connector： POWER1

Pin #
Name
Direction
Voltage
Wire Color
Caption
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
IN
3.3 V
BLACK
Battery Current Connecter
4
BATT_VOLTAGE_SENS_PROT
IN
3.3 V
BLACK
Battery Voltage Connecter
5
GND
​
GND
BLACK
GND
6
GND
​
GND
BLACK
GND

Backup Power POWER 2 | Connector： POWER2

Pin #
Name
Direction
Voltage
Wire Color
Caption
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
IN
3.3 V
BLACK
Aux Battery Current Connecter
4
AUX_BATT_VOLTAGE_SENS
IN
3.3 V
BLACK
Aux Battery Voltage Connecter
5
GND