Hi, i am trying to get the navdata out of the AR drone while tracking an object. i was able to retrieve th object position using the following script

$filenamex = "c:\logx.txt" %create log for x coordinates% $filenamey = "c:\logy.txt" %create log for y coordinates% :START

%retreive centroide position%

IF ($CameraIsTracking = true) $linex = "$CameraCenterX" $liney = "$CameraCenterY"

%write in the assigned files% fileWriteLine($filenamex, $linex) fileWriteLine($filenamey, $liney) ENDIF sleep(100) GOTO(START)

could you please assist me: how can i retrieve navdata of the gyro, accelerometer and sonar (altitude) while tracking to a log file similarly to the above? i am planning to calculate the positioning by using the following formula S= S0T+vT +0.5aT^2? hence S will be equal S= 0.5aT^2..... i can't find (a- acceleration) without the accelerometer (i am transforming g-force acceleration to m/s^2)....

My aim is to compare the movement of the object with the movement of the drone..

sorry for the long story... best regards ... (carlos@live.ru)