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
​
GND
BLACK
GND Connection
6
GND
​
GND
BLACK
GND
CAN | Connector： CAN2
Pin #
Name
Direction
Voltage
Wire Color
Caption
1
VCC_5V
OUT
5 V
RED/GRAY
VCC Power Supply
2
CAN_H_2
IN/OUT
12 V
YELLOW/BLACK
CAN High
3
CAN_L_2
IN/OUT
12 V
GREEN/BLACK
CAN Low
4
GND
​
GND
BLACK
GND
IO USART 1 / DSM | Connector： SPKT
Pin #
Name
Direction
Voltage
Caption
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
CPPM / S.BUS / SERVO SYSTEM | Connector： RCIN MAIN OUT
Pin #
Name
Direction
Voltage
Caption
S - 1
IO_CH1_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 2
IO_CH2_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 3
IO_CH3_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal

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

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

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)

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

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