Photography by Sam Murphy
WIREFINDER 9000
Find buried cable breaks with a radio.
By Christie, Jim, John, and Terry Noe
Our dog, Maggie, loves to run around in our big yard. But how do we fence her in? Building a 500-foot fence is expensive and unsightly, so we use an “invisible fence.” This is a buried wire that runs around the edge of our yard. Maggie wears a radio collar that beeps when she gets close to the wire, or gives her a mild shock if she strays over the edge (it doesn’t hurt).
One of Maggie’s favorite sports is digging up the gophers ...
Get Make: Technology on Your Time Volume 20 now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.