Durandal is a flight controller designed by Holybro utilizing the STM32H7 microcontroller series. As increasing number of drone companies and developers need to run more powerful models and build on more embedded memory capabilities, Durandal is designed to offer the performance upgrade for development needs.
The advantage will come in handy with intensive calculation features is required. Harnessing from our extensive autopilot building experience in the past years, we have implemented new vibration absorption system into the mechanical design of the hardware, and integrated IMU heater for sensors temperature control.
Key Design Points:
High performance H7 Processor with clock speed up to 480 MHz
Redundant inertial measurement unit (IMU) from Bosch & InvenSense
Vibration isolation system to filter out high frequency vibration and reduce noise to ensure accurate readings
IMUs are temperature-controlled by onboard heating resistors, allowing optimum working temperature of IMUs
2 power ports & 5 general purpose serial ports
Technical Specifications
Processors & Sensors
Main FMU Processor: STM32H743
32 Bit Arm Cortex-M7, 480MHz, 2MB memory, 1MB RAM
IO Processor: STM32F100/F103
32 Bit Arm Cortex
On-board sensors
Accel/Gyro: ICM-20689
Accel/Gyro: ICM-20602 / BMI088
Mag: IST8310
Barometer: MS5611
Electrical Data
Voltage Ratings:
Max input voltage: 6V
USB Power Input: 4.75~5.25V
Servo Rail Input: 0~36V
Current Ratings:
Telem1 Max output current limiter: 1.5A
All other port combined output current limiter: 1.5A
Mechanical Data:
Dimensions:80*45*20.5mm
Weight: 68.8g
Interfaces
13 PWM outputs (8 from IO, 5 from FMU)
5 general purpose serial ports
3 with full flow control
1 with separate 1.5A current limit (Telem1)
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
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
2 additional analog inputs
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