I won't get into a full tutorial regarding purchasing a Freescale KL25Z, installing Pinscape or fully configuring x360ce as that info is readily available elsewhere but I thought the tip below might be useful to some.

I have FX3 installed in a real (meaning heavy) cabinet and I wanted nudging to be 'fun' without really having to body slam the table.

And while your mileage may vary based upon location of the sensor etc I initially couldn't get the sensitivity where I wanted it.

Apparently FX3 takes analog input and triggers a digital nudge when a certain threshold is exceeded.fedloan irs.gov easybib