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
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
S - 4
IO_CH4_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 5
IO_CH5_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 6
IO_CH6_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 7
IO_CH7_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 8
IO_CH8_PROT
OUT
3.3 V Servo Signal, Servo Rail Power
PWM Signal
S - 9
PPM_SBUS_PROT
IN/OUT
3.3 V / 4.5 V Powered
PPM / S.Bus Signal
PPM S.bus signal and SPKT signal switching
By default, Mini Carrier Board uses PPM and S.bus in RC IN. If you want to switch it to SPKT signals, you need to solder the carrier board as shown below:
The middle solder pad of the left hand side is shorted with 5v pin. Therefore, you need to break their connection on PCB. The middle solder pad of the right hand side is shorted with PPM/S.B, so break their connection on PCB as well.
Solder the 3v3 solder pad with the middle solder pad at left hand side; and solder the SPKT solder pad with the middle solder pad at right hand side. So that RC IN port is compatible with SPKT signal.
Last update: 10th Jan 2019