DroneCore Hedgehog

Release notes

rev.0

• First revision

Description

This single-board autopilot serves as the central control unit of the UAV, integrating real-time flight-control functionality and high-performance onboard computing on a single PCB. The board includes an FMU based on an STM32H7 microcontroller for flight control and sensor data processing, together with a HAILO-15 processor that enables advanced autonomy functions. In addition, the HEDGEHOG autopilot provides the primary hardware interfaces required for connecting auxiliary modules within our ecosystem.

---

Mechanical / environmental specifications

Attribute	Value/Note
Weight	25g
Dimensions L×W×H (mm)	56 × 50 × 11.5
Temperature rating	-40°C / +85°C

Dimensions

2MB

DCS_HEDGEHOG_2Ddrawing.pdf

PDF

Open

---

3D model

19MB

DCS Hedgehog.zip

archive

Open

---

Power supply

Power supply rating: 12-36V

Power consumption approx: 6W

Overall consumption of the board strongly depends on the usage of the main computing unit. The given value corresponds to the HEDGEHOG in the default setup without any additional peripherals connected.

Note:

HEDGEHOG board can be powered by soldering an appropriate cable to VBAT pads, or through the HEDGEHOG DEFEXP board that is using Molex 213226-0210 connector. Powering by the HEDGEHOG DEFEXP board is preferred.

---

Peripherals

---

Connectors, controls and indicators

Top side

Connectors

CAM0, CAM1 (4-lane CSI)

• CAM0, CAM1, CAM2/3 share the same power rails, internally limited to 1.4A

• I2C and PWDN are 3V3 logic

• CAM_SUPPLY is configurable to 3V3 or 5V by solder bridge near the connector. SB open = 3V3 , SB closed = 5V

pin	function
1	CSI_CLK_P
2	CSI_CLK_N
3	CSI_D0_P
4	CSI_D0_N
5	CSI_D1_P
6	CSI_D1_N
7	CSI_D2_P
8	CSI_D2_N
9	CSI_D3_P
10	CSI_D3_N
11	NC
12	NC
13	PWDN
14	MCLK
15	I2C_SCL
16	I2C_SDA
17-21	GND
22-26	CAM_SUPPLY

FMU USB2

• Matching connector JST GHR-04V-S

• Downstream port only

pin	function
1	VBUS_DETECT
2	USB_SE_N
3	USB_SE_P
4	GND

PPM

Matching connector JST GHR-03V-S

Note:

PPM, FMU_SPI, UART7, H_USB2 and H_GPS share the same power rail, internally limited to 1.4A

pin	function
1	PPM
2	5V
3	GND

FMU_SPI

Matching connector JST GHR-08V-S

Note:

PPM, FMU_SPI, UART7, H_USB2 and H_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	SPI4_SCK
3	SPI4_MISO
4	SPI4_MOSI
5	SPI4_CS0
6	SPI4_CS1
7	NC
8	GND

H_GPS

Matching connector JST GHR-06V-S

Note:

PPM, FMU_SPI, UART7, H_USB2 and H_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	UART2_TX
3	UART2_RX
4	I2C1_SCL
5	I2CI_SDA
6	GND

FMU GPIO

Matching connector JST GHR-10V-S

pin	function
1	SE_GPIO_1
2	SE_GPIO_2
3	SE_GPIO_5
4	SE_GPIO_3
5	SE_GPIO_6
6	SE_GPIO_4
7	SE_GPIO_7
8	SE_GPIO_8
9	GND
10	GND

H_USB2

Matching connector JST GHR-04V-S

Note:

PPM, FMU_SPI, UART7, H_USB2 and H_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	USB2_N
3	USB2_P
4	GND

Bottom side

Connectors

CAN1

Matching connector JST GHR-04V-S

Note:

CAN1, CAN2 and FMU_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	CAN1_SE_P
3	CAN1_SE_N
4	GND

UART7

Matching connector JST GHR-06V-S

Note:

PPM, FMU_SPI, UART7, H_USB2 and H_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	UART7_FMU_TX
3	UART7_FMU_RX
4	UART7_FMU_CTS
5	UART7_FMU_RTS
6	GND

FMU GPS

Matching connector JST GHR-06V-S

Note:

CAN1, CAN2 and FMU_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	UART1_SE_TX
3	UART1_SE_RX
4	I2C1_SE_SCL
5	I2C1_SE_SDA
6	GND

CAN2

Matching connector JST GHR-04V-S

Note:

CAN1, CAN2 and FMU_GPS share the same power rail, internally limited to 1.4A

pin	function
1	5V
2	CAN2_SE_P
3	CAN2_SE_N
4	GND

RTC BAT (PADS)

Solder pads for external RCT battery connection

VBCK MAX = 3V3

pin	function
+	RTC_VBCK
-	GND

FAN (PADS)

Solder pads for external FAN connection

GPIO controlled 5V output limited to 0.6A

pin	function
+	5V
-	GND