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Offline danny475
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dont go away when you hunt a expansive thing
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« Reply #10 on: October 12, 2010, 12:09:34 pm »
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اhi
my opinion is to build both of them and you can then choose which one is beter
they are not expansive
thaks
tc danny

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Offline danny475
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dont go away when you hunt a expansive thing
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« Reply #11 on: October 26, 2010, 09:51:11 am »
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hay i build the dp and it was worst i dont know why ?
and now i will build the dbp2010 so i will see what will hapen
in adition do you see the vidios on utube or any other vidio sites the dp is very good the turkish one but you can get the best data to build that dp
go and watch them they are fine they can detect a 25cm*10cm plate at a destance of 2m in the air
tc danny

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Offline ram
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« Reply #12 on: October 27, 2010, 08:37:41 pm »
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30cmx30cm metal at 3mtrs? in electronics, nothing is impossible it will only take time to build and search and the main tools is the brain...

in pi, if you want to build powerful pi, then modify the transmitter,make it more powerful to penetrate the ground. ex. flyback of 3kv with 24 volts 7amps battery (2 mc batt 12v each) but you must suppress the flyback voltage going to rx circuit or it will damage the whole circuit.

the bifillar coil (gd1950 idea)
the dual mosfet output going to bifillar coil(my idea)
and the tuned frequency for big targets.
or the multi frequency transmitter(gd1950)

this idea were all tested and used by very expensive pi md. just keep on searching and study the schematics you gathered and you can design your own powerful metal detector. do not just asking schematic and pcb then build and if the result is not good and then you will be discourage. use your brain. we all know there are so many wizzards on this forum you can ask some help.

regards, ram

regards, ram,

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