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

Views: 5329

Comment by Jordi Muñoz on September 28, 2017 at 3:15pm

Hello Luc, 

The MRC0253 will be available soon, is very new and we haven't been able to add it to the store yet, but is available in the X2.1 kit. 

The I2C can be accessed through the GPS connector (as standard). We have cables that split the I2C signal out from the GPS, the MRC0218. Also, our GPS offers an auxiliary i2C output for convenience, you also check our GPS/i2c splitter or our Active i2c HUB. So you have plenty of options to play with. =) 

All the kits include the JST-GH to USB converter, which is always needed, so you should be covered. 

You can check our manual here


Comment by Luc Maximilien on September 28, 2017 at 7:28pm

Thanks for the reply Jordi.

Mine has shipped yesterday , I'm curious to test it and compare the X2.1 to traditional Pixhawk .

Hope that Invensense sensors will make the difference.

More outputs in a smaller factor is an advantage over Pixracer.

Comment by Luc Maximilien on October 6, 2017 at 7:34am

I have receive yesterday  the board and was able to install Arduplane 3.8.2 with Mission Planner.

Parameter AHRS_ORIENTATION must set to 2 if you mount your board with front in front of the plane.

Do someone knows where I can find  a 3D file  for printing the case for the X2.1 V2 ?

Comment by Jordi Muñoz on October 9, 2017 at 2:25pm

Hello Luc Maximilien, 

Yes, the orientation for Ardupilot is moved 90 because of the bootloader configuration. We will post instructions on how to update it (But after Mission Planner is updated). Future shipped boards will include this new update. 

Right now I'm working on this case for X2.1, is my first 3D Cad design so don't expect much:

This case will allow you to populate pins on right angle or upward configuration. Also, is 3D printer friendly. 


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