Hi, noob here, as part of a PIC project I am working on, I need some 
movement and shock sensing, but as cheap as possible, so am wondering if 
anyone has some suggestions.

I need two or three levels of detection, for inserting into a tennis racket 
handle.  The first, and possibly extraneous, is slight movement detection, 
ie., picking up the racket, to bring the PIC out of sleep.  A period of 
inactivity returns it to sleep.  Second level is swing detection.  Third is 
shock, from contact with the ball.  These two are the main ones I 
need.  The PIC has a few ADCs, so I don't need a digital signal.

So, what are some cheap options I can look at?
The ADXL320 +/- 5G sensor looks good, but from my searches I can only find 
supplies in the 1000's.  Dimension Engineering make a tasty little 
pre-buffered board (http://www.dimensionengineering.com/DE-ACCM5G.htm), but 
$20+ each is a little on the steep side for what I am after.  Any other 
options/suppliers for these type of chips?

Would piezo sensors do the job?  The "piezo polymer vibration sensor 
(LDTM-028K)" is sold by Digi-Key etc for $1 - $2, but I have no idea 
whether this would give me what I need?

Any thoughts would be appreciated

Yours Sincerely
Lee Mulvogue
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