DCS2.Default Expansion
Description
DCS2.Default Expansion acts as the primary interface between the Pilot Board and external drone hardware. It exposes a range of connectors and communication interfaces that allow integration with motors, sensors, payloads, and other mission-specific equipment. The board simplifies wiring and system integration by consolidating external component connections into a single expansion layer.
Altium sample project
Mechanical / environmental specifications
Weight
51g
Dimensions L×W×H (mm)
120.5 × 52 × 14.7
Temperature rating
-40°C / +85°C
Conformal coating
Yes
Dimensions
Power supply
WARNING - Do not exceed the maximum input voltage
Exceeding the maximum input voltage of 60 V may result in permanent damage to the device. Ensure that the input voltage remains within the specified limits at all times. Special care has to be taken if voltage transients and oscillations are present, as these may cause the maximum rating to be exceeded. This can occur in systems with high inductance, during switching events, or when using motor controllers with active braking. Appropriate suppression and protection measures must be implemented.
WARNING - Beware of excess heat
Heat is generated by all onboard voltage regulators during operation, with dissipation increasing at higher load current and total power consumption. Adequate thermal management, such as airflow or passive cooling, is recommended when operating the board at higher load conditions to ensure proper thermal performance and prevent overheating. Onboard power monitoring can be used to provide a precise overview of power consumption across the whole system.
Recommended Input Voltage Range: 14–55 V
Maximum Input Voltage: 60 V
Monitoring: Input power rail is monitored and reported via CAN2 (DroneCAN)
Onboard supply rails
5V_CRUC/SAFE
Output voltage: 5.13V
Maximum current load: 5A
Power rail monitored and reported via CAN2 (DroneCAN)
5V_PERIPH
Output voltage: 5.08V
Maximum current load: 8A
Controllable by onboard MCU
Power rail monitored and reported via CAN2 (DroneCAN)
3V3_SOM
Output voltage: 3.35V
Maximum current load: 5A
Controllable by onboard MCU
Power rail monitored and reported via CAN2 (DroneCAN)
VDD_SOM
Output voltage: 5.05V / 12.39V
(If Jetson has 5V input only, the board automatically selects lower voltage)
Maximum current load: 4A/3.5A
Controllable by onboard MCU
Power rail monitored and reported via CAN2 (DroneCAN)
Peripherals
Connectors, controls and indicators
Top side
Connectors
PAYLOAD SIGNALS
Matching connector Hirose DF36-50P-0.4SD
1
GbE_DA_N
2
GbE_DA_P
3
GbE_DB_N
4
GbE_DB_P
5
GbE_DC_N
6
GbE_DC_P
7
GbE_DD_N
8
GbE_DD_P
9
CAM3_I2C_SDA
10
CAM3_I2C_SCL
11
CAM3_MCLK
12
CAM3_PWDN
13
CAM3_CLK_P
14
CAM3_CLK_N
15
CAM3_D1_P
16
CAM3_D1_N
17
CAM3_D0_P
18
CAM3_D0_N
19
CAM2_I2C_SDA
20
CAM2_I2C_SCL
21
CAM2_MCLK
22
CAM2_PWDN
23
CAM2_CLK_P
24
CAM2_CLK_N
25
CAM2_D1_P
26
CAM2_D1_N
27
CAM2_D0_P
28
CAM2_D0_N
29
USB1_PWRCTL
30
USB1_OC
31
USB1_D_P
32
USB1_D_N
33
USB1_SSTX_P
34
USB1_SSTX_N
35
USB1_SSRX_P
36
USB1_SSRX_N
37
USB0_SSTX_P
38
USB0_SSTX_N
39
USB0_SSRX_P
40
USB0_SSRX_N
41
CAN1_H (available through solder bridges)
42
CAN1_L (available through solder bridges)
43
CAN2_H (available through solder bridges)
44
CAN2_L (available through solder bridges)
45
UART_JET_TX
46
UART_JET_RX
47
JETSON_GPIOx
48
JETSON_GPIOx
49
SERIAL1_TX (available through solder bridges)
50
SERIAL1_RX (available through solder bridges)
PAYLOAD POWER
Matching connector Molex 502578-060x
VDD_BATT rail is fused with 1A fuse
5V rail is internally limited to 2A
1
VDD_BATT
2
N.C.
3
5V_PERIPH
4
GND
5
GND
6
GND
I2C2
Matching connector JST GHR-04V-S
I2C2, CAN1, CAN2, ADC connectors share the same power rail internally limited to 1A
1
5V_CRUCIAL
2
I2C2_SCL
3
I2C2_SDA
4
GND
CAN1
Matching connector JST GHR-04V-S
I2C2, CAN1, CAN2, ADC connectors share the same power rail internally limited to 1A
1
5V_CRUCIAL
2
CAN1_H
3
CAN1_L
4
GND
CAN2
Matching connector JST GHR-04V-S
I2C2, CAN1, CAN2, ADC connectors share the same power rail internally limited to 1A
1
5V_CRUCIAL
2
CAN2_H
3
CAN2_L
4
GND
ADC
Matching connector JST GHR-06V-S
I2C2, CAN1, CAN2, ADC connectors share the same power rail internally limited to 1A
1
5V_CRUCIAL
2
5V_CRUCIAL
3
BAT_ISENSE
4
BAT_VSENSE
5
GND
6
GND
SERIAL5
Matching connector JST GHR-06V-S
SERIAL5, GPS1, GPS2, SPI shares the same power rail internally limited to 2A
1
5V_CRUCIAL
2
SERIAL5_TX
3
SERIAL5_RX
4
S.BUS_OUT
5
NC
6
GND
GPS1
Matching connector JST GHR-08V-S
SERIAL5, GPS1, GPS2, SPI shares the same power rail internally limited to 2A
1
5V_CRUCIAL
2
SERIAL3_TX
3
SERIAL3_RX
4
I2C1_SCL
5
I2C1_SDA
6
SAFETY
7
IO-LED_SAFETY_PROT
8
GND
GPS2
Matching connector JST GHR-06V-S
SERIAL5, GPS1, GPS2, SPI shares the same power rail internally limited to 2A
1
5V_CRUCIAL
2
SERIAL4_TX
3
SERIAL4_RX
4
I2C2_SCL
5
I2C2_SDA
6
GND
SPI (FMU)
Matching connector JST GHR-07V-S
SERIAL5, GPS1, GPS2, SPI shares the same power rail internally limited to 2A
1
5V_CRUCIAL
2
SPI_SCK
3
SPI_MISO
4
SPI_MOSI
5
SPI_CS0
6
SPI_CS1
7
GND
SERIAL1
Matching connector JST GHR-06V-S
5V power rail internally limited to 1A
1
5V_PERIPH
2
SERIAL1_TX
3
SERIAL1_RX
4
SERIAL1_CTS
5
SERIAL1_RTS
6
GND
I2S JET
Matching connector JST GHR-06V-S
5V power rail internally limited to 0.5A
1
5V_CRUCIAL
2
I2S_JET_DOUT
3
I2S_JET_DIN
4
I2S_JET_FS
5
I2S_JET_SCLK
6
GND
PWM1
Matching connector JST GHR-08V-S
1
IO-CH1-PROT ( "PX" -> SPI_FMU_MISO)
2
IO-CH2-PROT ( "PX" -> SPI_FMU_MOSI)
3
IO-CH3-PROT ( "PX" -> SPI_FMU_SCK)
4
IO-CH4-PROT ( "PX" -> SPI_FMU_CS1)
5
IO-CH5-PROT ( "PX" -> SPI_FMU_CS2)
6
IO-CH6-PROT
7
IO-CH7-PROT ( "PX" -> FMU_CH8 )
8
GND
PWM2
Matching connector JST GHR-08V-S
1
IO-CH8-PROT ( "PX" -> FMU_CH8 )
2
FMU_CH1
3
FMU_CH2
4
FMU_CH3
5
FMU_CH4
6
FMU_CH5
7
FMU_CH6
8
GND
SPI_JET
Matching connector JST GHR-07V-S
3V3 SPI voltage logic
SPI_JET and CAN_JET share the same power supply rail, internally limited to 0.5A
1
5V_JET_PERIPH
2
SPI0_CLK
3
SPI0_MISO
4
SPI0_MOSI
5
SPI0_CS0
6
SPI0_CS1
7
GND
CAN_JET
Matching connector JST GHR-04V-S
SPI_JET and CAN_JET share the same power supply rail, internally limited to 0.5A
1
5V_JET_PERIPH
2
CAN_H
3
CAN_L
4
GND
USB2
Matching connector JST GHR-04V-S
5V power rail internally limited to 2A
1
5V_PERIPH
2
USB_D_N
3
USB_D_P
4
GND
PCIE EXT
FH41-20S-0.5SH connector type
PCIE x1 bus
Possibility to use an expansion board to the M2_keyM connector, and use another external NVME.
3V3 power rail internally limited to 2A
1
GND
2
TX_P
3
TX_N
4
GND
5
RX_P
6
RX_N
7
GND
8
CLK_P
9
CLK_N
10
GND
11
SUSCLK 32KHZ
12
GND
13
#PCIE_RST
14
#PCIE_CLKREQ
15
#PCIE_WAKE
16
3V3_AD
17
3V3_AD
18
3V3_AD
19
3V3_AD
20
3V3_AD
CSI0, CAM1 (2-lanes CSI)
501951-2210 connector type
2 lanes MIPI CSI connectors
I2C and PWDN are 3V3 logic
Notes:
CAM0, CAM1 share the same power rail, internally limited to 0.5A
JET_CAM_SUPPLY is configurable by the solder bridge on the bottom side of the board
WARNING
Pay attention to the cable pins' orientation (same/opposite side contacts).
Cameras from different manufacturers can have different pin orders, so a wrong cable can cause a short-circuit!
1
CAM_SUPPLY
2
I2C_SDA
3
I2C_SCL
4
GND
5
MCLK
6
PWDN
7
GND
8
NC
9
NC
10
GND
11
NC
12
NC
13
GND
14
CSI_CLK_P
15
CSI_CLK_N
16
GND
17
CSI_D1_P
18
CSI_D1_N
19
GND
20
CSI_D0_P
21
CSI_D0_N
22
GND
LED_FR_L
Matching connector JST GHR-03V-S
LED_FR_L, LED_FR_R connectors share the same power rail internally limited to 2A
1
GND
2
LED_FL
3
5V_PERIPH
LED_FR_R
Matching connector JST GHR-03V-S
LED_FR_L, LED_FR_R connectors share the same power rail internally limited to 2A
1
GND
2
LED_FR
3
5V_PERIPH
LED_BK_L
Matching connector JST GHR-03V-S
LED_BK_L, LED_BK_R connectors share the same power rail internally limited to 2A
1
GND
2
LED_RL
3
5V_PERIPH
LED_BK_R
Matching connector JST GHR-03V-S
LED_BK_L, LED_BK_R connectors share the same power rail internally limited to 2A
1
GND
2
LED_RR
3
5V_PERIPH
Indicators
Controls
Button (tactile switch)
Multifunction button of the board. The main functionality is powering the board up and down.
Bottom side
Connectors
BATTERY SIGNAL
Matching connector JST GHR-08V-S
1
VBAT_INIT
2
CAN2_L
3
CAN2_H
4
BAT_VSENSE
5
BAT_ISENSE
6
BUTTON
7
PDB SWITCH
8
GND
EXT.BTN
Matching connector JST GHR-02V-S
Connect the SB5 to start the board automatically, without the need to press the button
1
GND
2
BUTTON
B2B POWER CONNECTOR (PDB/Power board)
1
5V_PERIPH
2
5V_CRUCIAL
3
3V3_SOM
4
VDD_JETSON (v2.0) / 18V_SOM (v1.x)
5
N.C. (v2.0) / ?V_PAYLOAD (v1.x)
6
5V_SAFETY
7
GND
8
GND
B2B SIGNAL CONNECTOR (PDB/Power board)
1
CAN1_N
2
CAN1_P
3
GND
4
CAN2_N
5
CAN2_P
6
JETSON_ID (v2.0) / GND (v1.x)
7
I2C_SCL
8
I2C_SDA
9
SERIAL 1 TX (v2.0) / RESERVED (v1.x)
10
SERIAL 1 RX (v2.0) / RESERVED (v1.x)
11
GPIO/PWM OUT 4 (v2.0) / RESERVED (v1.x)
12
GPIO/PWM OUT 3 (v2.0) / RESERVED (v1.x)
13
GPIO/PWM OUT 2 (v2.0) / RESERVED (v1.x)
14
GPIO/PWM OUT 1 (v2.0) / RESERVED (v1.x)
15
RESERVED
16
BAT_V_SENSE
17
BAT_I_SENSE
18
RTC_BATTERY (v2.0) / RESERVED (v1.x)
19
MOD_SLEEP
20
SYS_RST_HS
B2B ADAPTER CONNECTORS
Pinouts and reference design will be provided as an example Altium Designer project.
Controls
Last updated