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  • Would a simple vibration detector be suitable for zero battery drain option at a push?
    Not sure how sensitive they are, but worth playing with. Possibly coupled with magnetometer variances followed by a vibration signal to indicate a motion followed by a sudden stop.

    Another method could be based on a magnet mounted on rubber bands that would oscillate following a abrupt stop. Use the magnetometer to learn the polarity variances following various motions.

    Not as solid state but may have some experimental legs in it?


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