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  • 3D Robotics
    This comes up pretty often here, and indeed the same thought what was got me into this field three years ago. Suffice to say I've learned a lot since. You can't make an autopilot with accelerometers alone (here's why). The other elements--GPS, two-way-data, ability to drive servos, to say nothing of the non-realtime OS--are all subotimal. We should know, since we built a cellphone autopilot on a similar Windows Mobile smartphone a few years ago, which used a third-party stabilization system (see here for more).

    In short, you can make a desktop demo that almost looks like it would work, but in practice all you can make with a cellphone is a very bad navigation-only autopilot that needs as much external stabilization gear as a stand-alone autopilot. It's a good demo for geek cred, but not a practical solution.
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