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Cube Flight Controller

The Cube flight controller (previously known as Pixhawk 2.1) is a flexible autopilot intended primarily for manufacturers of commercial systems. It is based on the Pixhawk-project FMUv3 open hardware design and runs PX4 on the NuttX OS.

The controller is designed to be used with a domain-specific carrier board in order to reduce the wiring, improve reliability, and ease of assembly. For example, a carrier board for a commercial inspection vehicle might include connections for a companion computer, while a carrier board for a racer could includes ESCs form the frame of the vehicle.

Cube includes vibration isolation on two of the IMU’s, with a third fixed IMU as a reference / Backup.

Key Features

• Processor
  1. 32bit ARM® STM32H743 Cortex®-M7（with DP-FPU）
  2. 400 Mhz/1 MB RAM/2 MB Flash
  3. 32 bit STM32F103 failsafe co-processor
• Sensors
  1. Three redundant IMUs (accels, gyros and compass)
  2. ICM 20649 integrated accelerometer / gyro, MS5611 barometer on base board
  3. InvenSense ICM20602 IMU,ICM20948 IMU/MAG, MS5611 barometer on temperature controlled, vibration isolated board
  4. All sensors connected via SPI.
• Power
  1. Redundant power supply with automatic failover
  2. Servo rail high-power (7 V) and high-current ready
  3. All peripheral outputs over-current protected, all inputs ESD protected
• Interfaces
  1. 14x PWM servo outputs (8 from IO, 6 from FMU)
  2. S.Bus servo output
  3. R/C inputs for CPPM, Spektrum / DSM and S.Bus
  4. Analogue / PWM RSSI input
  5. 5x general purpose serial ports, 2 with full flow control
  6. 2x I2C ports
  7. SPI port (un-buffered, for short cables only not recommended for use)
  8. 2x CAN Bus interface
  9. 3x Analogue inputs (3.3V and 6.6V)
  10. High-powered piezo buzzer driver (on expansion board)
  11. High-power RGB LED (I2C driver compatible connected externally only)
  12. Safety switch / LED
  13. Optional carrier board for Intel Edison (now obsolete)