HTH,
I don't know if it's premade, or if you'll have to make it yourself, but a =
piezo sensor MAY do the trick.
The FORCE on the faces of the piezo is directly related to the voltage =
across the other faces.
Perhaps you could scrap a piezo element out of a BBQ starter and reduce =
the supporting structures down to the 5mm thickness and move from there.
You MAY need to add some damping, or something to reduce high voltages =
from shock loads. (mechanical damping, or some sort of voltage clamping =
cct.

Does the thin peizo speaker (the one that looks like two pieces of metal =
concentrically stuck together) have a piezo element? Perhaps that would be =
easier to alter to suit?


other techniques....
capacitive methods (may need some mechanical advantage added
pressure methods (a closed bladder/ vessel? with a pipe coming out to a =
more accessable area - terminated with a ported pressure sensor (liquid or =
air depending upon fabrication method, spill risk etc) - interface the =
pressure sensor to an amplifier, ADC and "bob's your uncle")

Thanks,
Des

>>> pathu440@STUDENT.LIU.SE 5/02/03 9:47:55 am >>>
I'm looking for some kind of sensor that will let me measure weight, the
problem is it can only be about 5mm thick. I don't need much resolution
5kg should do nicely, 10kg might also work.
The range would be something like 10kg to 100kg.


any help would be greatly apriciated,

Patrik

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