felixge/node-ar-drone — pull request #27 by janl (2012-11-10 17:56:36+00:00)
Title: Proof of concept for calling FTRIM before `takeoff()`. 

(cleaned up version of #25)

Based on the Drone Manual:

> AT*FTRIM
> Summary : Flat trims - Tells the drone it is lying horizontally Corresponding API function : ardrone_at_set_flat_trim
> Syntax : AT*FTRIM=%d,
> Argument 1 : the sequence number
> Description :
> This command sets a reference of the horizontal plane for the drone internal control system.
> It must be called after each drone start up, while making sure the drone actually sits on a horizontal ground. Not doin\
g so before taking-off will result in the drone not being able to stabilize itself when flying, as it would not be able t\
o know its actual tilt. This command MUST NOT be sent when the AR.Drone is flying.
> When receiving this command, the drone will automatically adjust the trim on pitch and roll controls.