This instructable is a medium difficulty Instructable, about 1 to 3 hours building time, to convert a Remote Control Toy (a car) into a vibrating dog caller collar. Distance range for this to project is limited by the quality of toy used.
Further information can be fond at this website DeafDogs.org
. They sell manufactured vibrating dog collar units. Some of these units go up to a mile away but you may find this out of your budget. This site also suggests making your own unit much cheaper similar to what I did for this instructable. However they didn't write an instructable for it.
This simple remote control could be slightly modified to control many other applications.
If you build this with a light rather than a vibrating motor you can find your night wandering pet much easier, is just one example.Note: 'Jake' has since passed and so 'Rusty' has volunteered to model the Deaf Dog Caller Collar. He says, "Please send cookies!"