> I need some sensors to pick up vibration. Needs to be sensitive
> in two axis, and capable of detecting being bumped with less
> than 1/8 inch movement. It'll feed a PIC so I can work with most
> any output, but I only need a single pulse when it's bumped

Can you define "bump" any better ?

What frequency/repetition rate ?

Can the sensor use anything else apart from its own state as
a reference ?

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