Robot App Store Developer Program


Knowledge Base

How to Horizontally Calibrate AR.Drone

  By Anna Sandler

Make sure you are familiar with "How to program AR.Drone remotely over WIFI" chapter before you continue to this tutorial.

AT*FTRIM command

This command is used to calibrate AR.Drone’s horizontal plane while the drone is still on a horizontal ground.

Make sure you calibrate the horizontal plane after each drone start up; otherwise Ar.Drone won’t be able to stabilize itself when flying.


AT*FTRIM=[Sequence number ] <LF>


  • Sequence number- 1 if it is a first command, or sequence number value of previous command + 1.


The following UDP packet sends AT*FTRIM command for horizontal calibration.
Make sure the drone sits on a horizontal ground.

The UDP packet that is sent to AR.Drone is:

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