IMU & Compasses

• 3 IMUs total: 2 on IMU board, 1 on FMU (all Cubes)
• 2 onboard compasses: 1 on IMU board, 1 on FMU (Cube Black, Green, Blue)
• 1 onboard compass (Cube Orange, Yellow)

Barometers

• Three redundant IMUs (accels, gyros, and compass)
• Two redundant barometers

Power System

• Dual power input (all Cubes)
• Redundancy from servo rail removed; now uses second dedicated power plug
• Zener diode and FET for Aux input 2 over-voltage protection
• Power protection available only on "PRO" carrier board
• Mini carrier board still uses servo rail for backup power

I2C & External Devices

• Dual external I2C ports (all Cubes)
• Supports two GPS/Mag units without interference

Power Monitoring

• Power monitoring routed to I/O chip for in-flight power event logging
• Brick OK, Backup OK, and FMU 3.3V monitored via 220Ω resistor to I/O pin

I/O Ports & Connectivity

• 14 PWM outputs: 8 from I/O, 6 from FMU
• Inputs for CPPM, Spektrum/DSM, and S.Bus
• Analog/PWM RSSI input
• S.Bus servo output
• 5 serial ports (2 with flow control)
• 2 I2C ports
• 1 SPI port (un-buffered, short cable use only)
• 2 CAN Bus interfaces
• CAN FD interface on Cube BlueH7 and Orange
• 3 analog inputs
• High-powered piezo buzzer driver (on expansion board)
• High-power RGB LED (externally connected via I2C)
• Safety switch with LED

IMPORTANT NOTES

• The Cube will not function without a carrier board.