I am new, friend told me about this site

My friend told me about this site but I don't know his user name so I couldn't give him credit. You know the 250 gold chips or whatever it was for signing someone up. I feel bad about that, but I couldn't wait to see schematics and such on some metal detectors. I have been doing an internet search and have seen a few. I looked at the surfmaster PI diagram which is really basic, yet I am surprised to see so many that like its performance. I am shocked at the price of this detector. I saw a couple others as well but I am not satisfied with any one diagram as of yet. I would like to see more here on this site, the reason I have signed up. I am planning on making  a detector as it is rewarding when it works well and has features I think I might like. I will have to talk about that more later, as it is just talk now. Finding time is my biggest problem. I am thinking I like the PI detector at the moment, but lacks discriminate so. so.  I can visualize a PI detector with a slightly different frontend pulse circuit. I see they have width time that can be changed etc. but it also has a problem with eating batteries. That is where I am going to try and give the detector more life yet maintain full output and hopefully more. More later, have to post you know to become a member.

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http://www.thunting.com/smf/index.php/topic,11502.msg73833.html#msg73833

thanks. I dont think I will do any serious treasure hunting, but would be fun I guess. Maybe stick to just old towns and buildings areas I suppose. I just like to tinker with stuff. I would get bored after a while or get frustrated with the unit and have to go back to the drawing board. years ago I made several bfo types. One worked great in the air but when I took it to the grass area where the fair was, It was embarrassing to say the least. I actually found more coins on the ground by looking with my eyes. There were others there too, but i did not let on it wasn't working good. I did not have the Faraday  shield on it and the ground was just making not work at all. there was one ther that had a Dtex as I recall. And one had a compass detector. This has been over 35 years ago. The guy with the 6 knob or so compass had a pouch full of coins that were buried and not even from the carnival after only being there about 15 minutes. The coins had dirt on them. The other guy with the Dtex had squat. I know it has a lot to do with operator, but in my case the unit worked great in the air but in real life it didn't. If I built another bfo which I doubt it, but it would be different this time. For now I am sticking the PI model just for ease of experimenting with just one coil. Last time I did a two coil job, it was a nightmare. The circuit was simple but not very easy to work with. I finally gave up on it. That was about 26 years ago. So that is the last time I messed with these things building one anyway. Now I have more knowledge and know how. At least I think I do.


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http://www.thunting.com/smf/index.php/topic,11502.msg73864.html#msg73864

Hello yourownfree,

Welcome on this forum with us.

Best wishes

Luc

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http://www.thunting.com/smf/index.php/topic,11502.msg73921.html#msg73921

Welcome aboard, good luck with your project, sounds interesting....DW

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