More piezos! Any ideas what a single grain might weigh? I know it depends o= n the type, but a ballpark number would be good. Joe ________________________________ From: piclist-bounces@mit.edu on behalf of Andrew= Burchill Sent: 17 October 2016 12:58:25 To: Microcontroller discussion list - Public. Subject: Re: [EE:] Looking for thin ( & sensitive) force sensors Hi Joe, google 'grain loss sensor' these have been in use for the agricultural industry for a few decades now. most of them are constructed in such a way that the sensor is isolated as much as possible from the underlying structure that uses them. output is usually proportional to impact velocity or particle size. On Mon, Oct 17, 2016 at 5:50 PM, Joe McCauley wrote: > The idea was to take a very sensitive commercially available planar senso= r > and compare to a new sensor material under development. I guess we're > looking for accuracy & reputability. > > I've never tried piezos for this, though I was aware they could be used > for force sensing. I have no feeling if one could be calibrated to do wha= t > I want. detecting spikes as a result of a 'hit' is OK as long as the > amplitude scales with the force of the strike. > > Ideally I'd be wanting a commercial sensor tough. > > Thanks, > > Joe > > -- ....AB -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .