Advanced autopilot system PIXHAWK2 Pixhawk 2.1 Standard Suite Here2 CAN GPS UAV/UAS/ROV Autopilot Flight Controller
The Highly Anticipated Next Generation PIXHAWK PX4 Flight Controller
• An integrated, single board / box flight controller.
• Sufficient I/O for most applications without expansion.
• Improved ease-of-use.
• Improved sensor performance.
• Improved microcontroller resources.
• Increased reliability and reduced integration complexity.
• Reduced BoM and manufacturing costs.
Key design points
• All-in-one design with integrated FMU and IO and lots of I/O ports.
• Improved manufacturability, designed for simpler mounting and case design.
• Separate power supplies for FMU and IO (see power architecture section).
• On-board battery backup for FMU and IO SRAM / RTC.
• Integration with the standard power brick.
Pixhawk FMU Main Board
• STM32F427; flash 2MiB, RAM 256KiB.
• On-board 16KiB SPI FRAM
• MPU9250 or ICM 20xxxintegrated accelerometer / gyro
• MS5611 Baro
• All sensors connected via SPI.
• Micro SD interfaces via SDIO.
Vibration Damped IMU board
• LSM303D integrated accelerometer / magnetometer.
• L3GD20 gyro.
• MPU9250 or ICM 20xxx Gyro / Accel
• MS5611 Baro
• All sensors connected via SPI.
I/O ports
• 14 PWM servo outputs (8 from IO, 6 from FMU).
• R/C inputs for CPPM, Spektrum / DSM and S.Bus.
• Analogue / PWM RSSI input.
• S.Bus servo output.
• 5 general purpose serial ports, 2 with full flow control Two I2C ports
• One SPI port (un-buffered, for short cables onlynot recommended for use).
• Two CAN Businterface.
• 3 Analogue inputs
• High-powered piezo buzzer driver.(On expansion board)
• High-power RGB LED. (I2C driver compatible Connected externally only)
• Safety switch / LED.
List of features changed on Pixhawk 2 from Pixhawk
three IMU's
- these consist of 2 on the IMU board
- 1 fixed to the FMU
two onboard compasses
- these consist of 1 on the IMU board
- 1 Fixed on the FMU
two Baros
- 1 on the IMU (this Baro will most likely be removed in favour of a dedicated external Barometer
- 1 Fixed on the FMU
Dual Power input
- This removes the option of redundancy from the Servo rail and replaces it with a dedicated second power plug
- A dedicated power protection Zener diode and Fet have been added to protect from voltages over 5.6v being applied to Aux input 2
- This is only on the "PRO" carrier board mini carrier board still draws the backup from the servo rail.
only 2 FMU PWM out channels on the Mini carrier board. (10 PWM total)
Dual external I2C
- This allows for connection of items to either I2C port, potentially allowing two GPS / Mag units to be plugged in without the Mags conflicting.
GPS_Puck with Safety and LED (available separately)
- a single unit GPS / Mag / RGB / Safety button
Pixhawk 2 Hardware ID
- I physical Hardware ID has been added to the I/O of the Pixhawk2. This needs software to identify the board for debug purposes. This is the only non-software method to tell the two Pixhawks apart.
Breathing LED on cube. Comes on solid with default settings on the pin. Is connected to a PWM pin, and as such could be made to Breath,
Power monitoring pins are now routed to the I/O chip, these will allow for the logging of power events during an inflight reboot.
Brick OK, Backup OK, and FMU 3.3V are all connected to a digital pin on the I/O via a 220Ohm resister.
