Novice coiler here looking for some help in designing and building my own detector.

[Smosley]

Hello everyone
I've just became interesting in metal detecting. I'm planning on purchasing a Tesoro Compadre for my first detector. Anyway, I would also like to build my own metal detector as well. I've done a few days worth of searching and I've found several designs that look promising but I just can't decide on which one to build. I would like to design one that's induction balance and that it has some sort of simple discrimination. I would also like it to be able to output the sound to a standard pare of headphones and not a piezoelectric buzzer or crystal ear piece. I have a lot of designs in mind, unfortunately I'm a total novice when it comes to designing circuit boards and integrating circuits. Does anyone know of such a design that I can model my coil after? I would like it to be as simple as possible but still have the functionally that I'm looking for.

[FatBob]

A White's 3900 would be easy to make, It's nonmotion and a coil could be sourced online;

http://www.geotech1.com/forums/attac...5&d=1151530282

The coil can be the toughest part of a DYI build. It can take 3 or 4 tries to get a good one
and even then it might not be as good as a bought one.

Used coils still command a high price. Maybe buy a coil then make a detector to use with it?

The mechanics of the case and stick can be tricky too. I buy old useless ones at yard sales
and reuse parts for new builds.

Or You could make a PI type one. The coils for those are easy (ier). You can buy a blank board
for Surf. Then you would have the best of both worlds!

[Smosley]

While searching the forums i noticed a simple circuit posted named "CCO single IC.gif" the original post was located here
http://www.geotech1.com/forums/showt...hlight=Houndog
and the circuit I'm interested in is located near the top of the page. My question is this, would this be a decent detector to build? If there is something else better and simpler to build would you please send me a link to that instead. I understand that PI detectors are going to be the ones that most people are going to suggest. With the level of mineralization of the soil where I live at a PI detector would be about as useful as an induction balanced detector. It doesn't really matter what type of detector I build, I'm just looking for a simple, stable circuit with a moderate search depth.

[Qiaozhi]

... unfortunately I'm a total novice when it comes to designing circuit boards and integrating circuits. Does anyone know of such a design that I can model my coil after? I would like it to be as simple as possible but still have the functionally that I'm looking for.

Inside the METAL DETECTOR - Second Edition - Published 2015

ISBN 978-0-9858342-1-0

[SVEN1]

By all means first off buy and read this book mentioned above. Could be your bible. It also includes several designs you can build easily enough.