> I have been reading about the pressure sensors but has anyone got a > suggestion for sensors that will detect if a vehicle is running across a > lawn or park. It need not pick up something light such as a dog or cat. > > TIA, > > Peter A surplus antivehicle mine ? ;-) just being funny, Peter PS: Try piezo cable or pneumatic cable. Or geophones. Or metal detector coils (buried). Good luck with the budget & work & maintenance for a larger area. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics