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  • Todd Spurgeon May 9, 2013 at 6:02pm

    I have my final exam on this stuff this week for stability and control. Can't wait to apply it this summer building my own UAV. 

  • Cliff-E May 9, 2013 at 5:47pm

    I prefer a thumb and 2 fingers (e.g. right hand/left rules gestures). A little bit cheaper...

    Invest in a matlab license... then generate C++ code from it. It's pretty sweet.

  • Pbreed May 9, 2013 at 4:42pm

    I used three Popsicle sticks hot melt glued together for a similar purpose...

  • Jack Crossfire May 9, 2013 at 4:30pm

    They have to develop a Kalman filter based AHRS to be competitive.  Optimizing it for a microcontroller is matrix math intensive, although it can be solved using equations.  They could stand for an investment in mathcad. 

  • 3D Robotics
    Brandon Basso May 9, 2013 at 1:37pm

    "We don't know Q because of b_E"  ... best guess :)

  • Earl May 9, 2013 at 1:01pm

    hope this solves the level calibration in 3.0 rc1

    Earl

  • Rob_Lefebvre May 9, 2013 at 12:48pm

    I think they're trying to solve the compass calibration issue in APM Copter 3.0.  I see "Magnetometer Readings" and "We don't know..."

  • Dries Raymaekers May 9, 2013 at 12:43pm

    Indeed looks like rotation matrices.. hoping for a direct georeferencing module in arduplanner, useful for AP. Linked to internal orientation parameters of the camera and GPS/IMU transmitted with the 3DR transmitter (also in the picture) one could calculate image footprint on-the-fly. Sure would help in ensuring a complete terrain coverage while in the field.

  • MR60
    Hugues May 9, 2013 at 12:33pm

    funny they use zip ties to make a 3 axis orthogonal referential : Roll,pitch, yaw.

    Are they calculating rotation matrixes ?

  • Chuck May 9, 2013 at 12:00pm

    Got to love the matrix math! I demand better images of the proof! :P

    Seems like the guys at 3DR have a lot of fun, or maybe I am the only one that gets excited by math.

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