ПРИВЕТ again Eugene and all detectorists !!!!
Sorry for late answers, but i am very busy, with my job of course.
I did it. I made a "ШАНС - CHANCE".
Eugene you are right about price for parts. It exceed all my expectations. All the parts which are mainly cheap, but LCD , teflon wire, plastic housing, epoxy-resin set, low-capacitanse accustic cable, accu packs are close to $200 U.S. bucks.
This PI Metal Detector works great, and i check it up. So i decided to make another one.
I am sure it will be the Project of the year 2009 !!
Some info to all detectorists which plan to make this PI-machine.
This is nugget-hunting machine and its mean that it have a precise-timing-control system. All the jobs made an AT-MEGA8 microcontroller. Sampling has done on 12-bits with MCP3201. One low-noise, fast-recovery and wide- bandwidth OPA 37 preamp amplify quite a small and fast decaying signals from the coil. Sampling was done after very short delay affter sharp transient Impulse when fet is off (Kick-Back-Pulse in american term). Because of that its very important to make for this PI ultra Fast Mono Coil which have so little inter-winding capacitanse. Big and inert coils cant work with this PI.
I dont want to explain all the theory but who wanna know something more its time to back to university
Russian or American (same thing but knowlage is very important !!!. Why ? Because knowlage is
a LIGHT.Its my opinion).
This is a pictures of "ШАНС - CHANCE" from my friend Aleph.
And this are mine from my lab.
Eugene could you move this subject and put it on the right place under Topic PI Designs & Deepseekers.
Thanks in advance.!!!
| | Quote: | | | Posted by bisaya | | | |
| can this P.I. detect metal at 5 meter deeps or more? or anyone has a P.I. capable of detecting metal upto 5+meter. pls post your project..
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NO ONE PI can detect matal on 5 or more meters. For that kind of prospecting you must to made MAGNETOMETER. Overhauser, or Proton Procession Mag can detect iron up to 500 meter in earth core. Of course very large quantity of Iron for example Iron Blocks up to 10000 tons.
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« Last Edit: December 09, 2009, 07:54:24 pm by Eugene52 »
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