Holybro Durandal

:::warning PX4 does not manufacture this (or any) autopilot. Contact the manufacturer for hardware support or compliance issues. :::

Durandal® is the latest update to the successful family of Holybro flight controllers. It was designed and developed by Holybro.

Durandal

At high level, some of the key features are:

• Integrated temperature control for sensors.

• Powerful STM32H7 microcontroller running at 480MHz. 2 MB of Flash memory and 1 MB of RAM.

• New sensors with higher temperature stability.

• Internal vibration isolation system.

• Dual high-performance, low-noise IMUs on board are designed for demanding stabilization applications.

A summary of the key features, assembly, and purchase links can be found below.

:::note This flight controller is manufacturer supported. :::

Quick Summary

Technical Specifications

• Main FMU Processor: STM32H743

  • 32 Bit Arm ® Cortex® -M7, 480MHz, 2MB memory, 1MB RAM

• IO Processor: STM32F100

  • 32 Bit Arm ® Cortex® -M3, 24MHz, 8KB SRAM

• On-board sensors

  • Accel/Gyro: ICM-20689

  • Accel/Gyro: BMI088 or ICM20602

  • Mag: IST8310

  • Barometer: MS5611

• GPS: u-blox Neo-M8N GPS/GLONASS receiver; integrated magnetometer IST8310

Interfaces

• 8-13 PWM servo outputs (8 from IO, 5 from FMU)

• 6 dedicated PWM/Capture inputs on FMU

• Dedicated R/C input for Spektrum / DSM

• Dedicated R/C input for CPPM and S.Bus

• Dedicated S.Bus servo output and analog / PWM RSSI input

• 5 general purpose serial ports

  • 3 with full flow control

  • 1 with separate 1.5A current limit

• 3 I2C ports

• 4 SPI buses

  • 1 internal high speed SPI sensor bus with 4 chip selects and 6 DRDYs

  • 1 internal low noise SPI bus dedicated for XXX

  • Barometer with 2 chip selects, no DRDYs

  • 1 internal SPI bus dedicated for FRAM

  • Supports temperature control located on sensor module

  • 1 external SPI buses

• Up to 2 CANBuses for dual CAN

  • Each CANBus has individual silent controls or ESC RX-MUX control

• Analog inputs for voltage / current of 2 batteries

• 2 additional analog inputs

Electrical Data

• Power module output: 4.9~5.5V

• Max input voltage: 6V

• Max current sensing: 120A

• USB Power Input: 4.75~5.25V

• Servo Rail Input: 0~36V

Mechanical Data

• Dimensions: 80x45x20.5mm

• Weight: 68.8g

Other Characteristics

• Operating temperature: 4085C

• Storage temperature: -40~85C

• CE

• FCC

• RoHS compliant (lead-free)

For more information see: Durandal Technical Data Sheet.

Where to Buy

Order from Holybro.

Connections

The locations of ports/connections are shown here (and below in the pinouts section).

Top

Durandal - Top Pinouts (Schematic)

Front

Durandal - Front Pinouts (Schematic)

Back

Durandal - Back Pinouts (Schematic)

Right

Durandal - Right-side Pinouts (Schematic)

Left

Durandal - Left-side Pinouts (Schematic)

Dimensions

All dimensions are in millimeters.

Durandal Dimensions

Assembly/Setup

The Durandal Wiring Quick Start provides instructions on how to assemble required/important peripherals including GPS, Power Management Board etc.

Building Firmware

:::tip Most users will not need to build this firmware! It is pre-built and automatically installed by QGroundControl when appropriate hardware is connected. :::

To build PX4 for this target:

make holybro_durandal-v1_default

Serial Port Mapping

UART	Device	Port
USART1	/dev/ttyS0	GPS1
USART2	/dev/ttyS1	TELEM1
USART3	/dev/ttyS2	TELEM2
UART4	/dev/ttyS3	TELEM4/GPS2
USART6	/dev/ttyS4	TELEM3
UART7	/dev/ttyS5	Debug Console
UART8	/dev/ttyS6	PX4IO

Debug Port

The PX4 System Console and SWD interface run on the Debug Port.

The pinouts and connector comply with the Pixhawk Debug Mini interface defined in the Pixhawk Connector Standard.

For wiring and debugging information see the above links.

:::note No Debug port is exposed for the I/O board. :::

Peripherals

• Digital Airspeed Sensor

• Telemetry Radio Modules

• Rangefinders/Distance sensors

Supported Platforms / Airframes

Any multicopter / airplane / rover or boat that can be controlled with normal RC servos or Futaba S-Bus servos.

The complete set of supported configurations can be seen in the Airframes Reference.

Pinouts

Durandal pinouts are listed below. These can also be downloaded from here.

Top Pinouts

Durandal - Top Pinouts (Schematic)

Front Pinouts

Durandal - Front Pinouts (Schematic)

SUBS Out port

Pin	Signal	Volt
1 (red)	-	-
2 (yellow)	SBUS_OUT/RSSI_IN	+3.3V
3 (black)	GND	GND

DSM RC port

Pin	Signal	Volt
1 (red)	VDD_3V3	+3.3V
2 (yellow)	DSM_IN	+3.3V
3 (black)	GND	GND

I2C A port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	SCL4	+3.3V
3 (black)	SDA4	+3.3V
4 (black)	GND	GND

CAN1 port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	CAN H	+3.3V
3 (black)	CAN L	+3.3V
4 (black)	GND	GND

GPS port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	TX (out)	+3.3V
3 (black)	RX (in)	+3.3V
4 (black)	SCL1	+3.3V
5 (black)	SDA1	+3.3V
6 (black)	SAFETY_SWITCH	+3.3V
7 (black)	SAFETY_SWITCH_LED	+3.3V
8 (black)	VDD_3V3	+3.3V
9 (black)	BUZZER	+5V
10 (black)	GND	GND

TELEM4 I2CB ports

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	TX (out)	+3.3V
3 (black)	RX (in)	-
4 (black)	SCL2	-
5 (black)	SDA2	+3.3V
6 (black)	GND	GND

TELEM3, TELEM2, TELEM1 port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	TX (out)	+3.3V
3 (black)	RX (in)	+3.3V
4 (black)	CTS (in)	+3.3V
5 (black)	RTS (out)	+3.3V
6 (black)	GND	GND

POWER port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	VCC	+5V
3 (black)	CURRENT	+3.3V
4 (black)	VOLTAGE	+3.3V
5 (black)	GND	GND
6 (black)	GND	GND

Back Pinouts

Durandal - Back Pinouts (Schematic)

MAIN Out

Pin	Signal	Volt	+	-
1	IO_CH1	+3.3V	VDD_SERVO	GND
2	IO_CH2	+3.3V	VDD_SERVO	GND
3	IO_CH3	+3.3V	VDD_SERVO	GND
4	IO_CH4	+3.3V	VDD_SERVO	GND
5	IO_CH5	+3.3V	VDD_SERVO	GND
6	IO_CH6	+3.3V	VDD_SERVO	GND
7	IO_CH7	+3.3V	VDD_SERVO	GND
8	IO_CH8	+3.3V	VDD_SERVO	GND

AUX Out

Pin	Signal	Volt	+	-
1	FMU_CH1	+3.3V	VDD_SERVO	GND
2	FMU_CH2	+3.3V	VDD_SERVO	GND
3	FMU_CH3	+3.3V	VDD_SERVO	GND
4	FMU_CH4	+3.3V	VDD_SERVO	GND
5	FMU_CH5	+3.3V	VDD_SERVO	GND

RC IN

Pin	Signal	Volt
S	SBUS_IN/PPM_IN	+3.3V
+	VCC	+5V
-	GND	GND

Right-side Pinouts

Durandal - Right-side Pinouts (Schematic)

CAN2 port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	CAN H	+3.3V
3 (black)	CAN L	+3.3V
4 (black)	GND	GND

CAP & ADC IN port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	FMU_CAP6	+3.3V
3 (black)	FMU_CAP5	+3.3V
4 (black)	FMU_CAP4	+3.3V
5 (black)	FMU_CAP3	+3.3V
6 (black)	FMU_CAP2	+3.3V
7 (black)	FMU_CAP1	+3.3V
8 (black)	ADC1_SPARE_1	+3.3V ++
9 (black)	ADC1_SPARE_2	+6.6V ++
10 (black)	GND	GND

:::warning ++ Sensors connected to pins 8, 9 must not send a signal exceeding the indicated voltage. :::

Left-side Pinouts

Durandal - Left-side Pinouts (Schematic)

DEBUG port

Pin	Signal	Volt
1 (red)	VT	+3.3V
2 (black)	TX	+3.3V
3 (black)	RX	+3.3V
4 (black)	SWDIO	+3.3V
5 (black)	SWCLK	+3.3V
6 (black)	GND	GND

SPI port

Pin	Signal	Volt
1 (red)	VCC	+5V
2 (black)	SCK	+3.3V
3 (black)	MISO	+3.3V
4 (black)	MOSI	+3.3V
5 (black)	CS1	+3.3V
6 (black)	CS2	+3.3V
7 (black)	GND	GND

USB port

Pin	Signal	Volt
1 (red)	VBUS	+5V
2 (black)	DM	+3.3V
3 (black)	DP	+3.3V
4 (black)	GND	GND

Further info

• Durandal Wiring QuickStart

• Durandal Technical Data Sheet

• Durandal Pinouts (Holybro)