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 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads