Looking at detecting where something is hitting onto a target and could be with quite a bit of force (think of a baseball being thrown at a target). I'm thinking that Piezo sensors could be used in a quadrant type setup, such that the PIC would detect the voltage from each sensor (how big/small can these be) and determine where it hits. comments? _________________________________________________________________ Instant message in style with MSN Messenger 6.0. Download it now FREE! http://msnmessenger-download.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu