Discussions

IMU output

Posted by Gerald C. Hughes on September 13, 2011 at 9:10am

We are getting a lot of data from the Ardupilot IMU.  However we seem to have a problem decipering what we are getting.  Specifically, the Time stamp format is unknown.  Is there documentation on reading IMU data fields?

j

 

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Developer
    Doug Weibel September 13, 2011 at 11:13pm

    What the gps timestamp is depends on which gps.  Generally it is either millisecond time of day or millisecond time of week.

     

    Crs is ground course, and mix altitude is a mixture of gps and baro altitude (% determined by the parameter value).

  • Aaron Bliesner September 13, 2011 at 11:15am

    I'm looking at it too.

     

    Here is a sample from a log from last week.

     

    ATT: -427, 272, 18698

    GPS: 55471500, 1, 13, 41.6851730, -111.8995000, 0.0000, 1547.2300, 1533.3500, 15.7300, 182.9300

     

    What are the units for each value?  Not being a computer guy (but trying), I see ATT values that don't make sense because there are numbers >360.  Is the GPS time stamp is in GPS week?  I see the XY coords, but what are the two z values?  And finally what is everything else?

     

    Thanks

     

     

This reply was deleted.

Activity