Introducing the AUAV X2.1 Flight Controller


The AUAV X2.1 is all about lessons learned. The X2 was a very successful board but there was still room for improvement. Following the PixRacer project we had time to invest into making the X2 the high quality PixHawk replacement we intended it to be. Major changes include: updated IMU sensors, power supply has been redesigned, headers have been laid out more logically, remote USB connector, industry standard 30.5mm mounting points.

Questions and comments are welcome!

Phil and Nick

Available: October 1, 2016

Price: $130


Main: STM32F427VIT6 ARM microcontroller - Revision 3
IO: STM32F100C8T6 ARM microcontroller

Next Generation Sensors:

Invensense MPU9250 9DOF
Invensense ICM-20608 6DOF
MEAS MS5611 barometer

New Power OR-ing schematic with reverse voltage protection. 5V power module is required!


2.54mm headers:
RC input
PPM input
Spektrum input
RSSI input
sBus input
sBus output
Power input
Buzzer output
LED output
8 x Servo outputs
6 x Aux outputs
USART7 (Console)

JST GH connectors:
USART2 with flow control (Telem 1)
USART3 with flow control (Telem 2)
USB (150mm GH to Micro USB cable included for convenient mounting)
JTAG FMU Processor
JTAG IO Processor

Size: 36mm x 50mm

Mounting Points: 30.5mm x 30.5mm 3.2mm diameter

Weight: 10.9g





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  • Plus one on sticking with pin headers.
  • Has this run Ardupilot yet? Do we have to wait for firmware?
  • Developer

    Looks like a solid product. Very high on the list next time I need a new board.

  • Glad to see this board finally coming soon....
    I am a happy AUAV-X2 and pixracer customer and this one will be my next fixed wing controller. I like the size and still using pin header which is the best connector.

  • Hi guys,

    Sorry for not participating lately, but we ( Bulgarian users ) couldn't access DIYDrones for a while for some reason.

    Today I gained access of it again....seems someone fixed the problem.

    About X2.1....I ported the bootloaders for both FMU and IOSoC, also tested the NSH, but as the sensors are new, compared to our old X2 and Pixhawk, the firmware needs some driver modifications.

    Also, have some more pictures of TOP and BOTTOM sides:



  • Nice. You have an STL for a case?
  • Well done!

    What are the differences between this an Pixracer? Do both have same set of sensors? 

    Is this board going to have plastic case as Pixracer?

  • Uau
    Loving the pinhead as it is highly integrable for OEMs.

    Well done
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