Hobby Projects - Insulation tester, LED Circuits, Meters.
Showing posts with label Outdoor-Hobbies. Show all posts
Showing posts with label Outdoor-Hobbies. Show all posts

Friday, February 05, 2016

Metal Detector Projects

Here are some Metal Detector Projects that are quite interesting for the purpose of education and experiments in the Art of electronics. This site may be as old as Y2K, but the url / domain may have changed.

Metal Detector Projects

If you are interested in the theory behind the mag I can highly recommend the book The Magnetics Measurement Handbook by J.M. Janicke. Besides a good coverage of magnetics theory, it contains much of what you need to build a useful fluxgate Magnetometer, plus other devices.

Traditional Geophysical instruments include ground-penetrating radar, earth resistivity meter, infrared, and sonar, to name a few. Currently, earth resistivity projects are the most practical for the do-it-yourselfer, although some people have been tinkering with side scan sonar.

Metal Detector Projects

Detection of Gold

Just the Jeohunter really works and directly detects Gold - see below screen. And even gold-worth 9-15cm diameter cannon-balls get detected as "Gold" (golden ring & cannonball analyses has identical values), but thats because of the huge metal mass and special shape - alot MDs have "problems" in such situation and perhaps only a magnetometer really works here. btw. there is no difference if you search with Ground Balance minus 200, zero or plus 200, the gold detection always remains the same.

Detection of Gold - Metal Detection

There are historical records of DIY Enthusiasts having created what is known as the "Donkey Kong Gold Hunter". This Gold Detector uses a Nintendo Unit after many Mods.

Saturday, April 21, 2012

Homemade Metal Detector Kit

This idea is both for indoor and outdoor use, depends on how you could modify or enhance it. The important reason you ought to build this circuit is to learn building non-ic oscillators, this trains you on L, C, R and Transistor Switching. - delabs

Homemade Metal Detector Kit

With a handy metal detector you can check beforehand whether there are metal objects in a wall, ceiling or floor. An LED indicates if a metal object is in the vicinity and keeps your simple home projects, simple and safe.

Homemade Metal Detector Kit

Avoid disaster when drilling at home By Ben Godfrey

Ben Godfrey is an electrical engineering student at the University of California, Davis. Ben has written iPhone applications and is a Ham Radio operator.

See also  - Metal Detector Circuits Problem