> problem I see is the analog output. I'd have to set the pic up to
> do continuous A?D conversions and pick it out in software. That's
> not so much a problem, but I was hoping to put the pic to sleep
> and get by without a on-off switch

At rest the output of the accelerometer would be steady, constant
or slow movements would have a gentle slope. A bump would be
a higher slew rate. A basic high pass filter with a comparator or
op-amp would turn this into a PIC-waking edge or level

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