Home Made Metal Detector
That link goes to the site Metal Detector Schematic, which we put together when we were thinking of building our owne homemade metal detector. Basically we made a site that cataloged the various wiring diagrams and circuits for metal detectors, and when we got the time to build our homemade metal detector, we'd have the perfect starting spot.

Well, unfortunately we've never got around to making our homemade metal detector but the site is still an excellent resource. And the best part is not only does it have amateur homemade detector diagrams, it also has schematics for some of the same metal detectors you can buy in a store.

Some of the wiring circuits you'll find links to there are the Tesoro Bandido II Umax, PI-BEACH DETECTOR, TESORO ELDORADO Protel99se, FISHER 1265, FISHER 1235, FISHER 1225, and many more.
Metal Detector Searches
The homepage of the Metal Detector searches we didn't think of.
Metal Detector 101
The main site here where we break down info by individual metal detector.