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Offline DelamuerteTopic starter
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« Reply #10 on: February 13, 2009, 07:33:32 pm »
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thanks Eugene...I downloaded all Geotech and thunting projects...
but my knowledge in electronic doesn't afford me to build those kind of things...too complicated
That's why I asked Mike for a stripboard schematic, more or less at my level :Smiley

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Offline Sauerkraut
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« Reply #11 on: February 13, 2009, 07:52:57 pm »
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Gary at Chemelec sells PCB and Kit for a PI Detector.

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http://www3.telus.net/chemelec/Projects/Metal-2/Metal-2.htm

You may even get help to get it working.

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Offline Eugene52
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« Reply #12 on: February 13, 2009, 07:58:25 pm »
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If you build a Metal Detector from our Library , I am sure that it will be much better than most of the $100 dollar "Metal Detector garbage" sold today , that is flooding the Market Place !! And when you get done , you will find some decent targets and have a very good "basic understanding" of Electronics..........Just take your time and double check your work and if you have problems let us know . The circuit board work should go smooth for you , the search coil will be fine if you follow winding procedures !! And if you decide not to build this particular Model , you have many other options to choose from here at Thunting.com !!

Regards,........Eugene52

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Offline DelamuerteTopic starter
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« Reply #13 on: February 13, 2009, 08:24:16 pm »
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I found this, thought it could interest few of u


Common pulse induction search coils with their physical properties Size Shape Turns Wire size Inductance Resistance
? 120 mm Round 36 ? 0.40 mm / 0.14 mm2 405 ?H 1.9 Ohm
? 150 mm Round 31 ? 0.40 mm / 0.14 mm2 394 ?H 2.0 Ohm
? 175 mm Round 28 ? 0.40 mm / 0.14 mm2 387 ?H 2.1 Ohm
? 200 mm Round 26 ? 0.40 mm / 0.14 mm2 406 ?H 2.2 Ohm
? 250 mm Round 22 ? 0.40 mm / 0.14 mm2 380 ?H 2.3 Ohm
? 300 mm Round 20 ? 0.50 mm / 0.20 mm2 390 ?H 1.6 Ohm
? 400 mm Round 17 ? 0.50 mm / 0.20 mm2 396 ?H 1.8 Ohm
? 500 mm Round 15 ? 0.50 mm / 0.20 mm2 400 ?H 2.0 Ohm
1.0 x 1.0 m Square 10 ? 0.66 mm / 0.34 mm2 406 ?H 2.0 Ohm
1.4 x 1.4 m Square 8 ? 0.66 mm / 0.34 mm2 387 ?H 2.2 Ohm
1.8 x 1.8 m Square 7 ? 0.80 mm / 0.50 mm2 398 ?H 1.7 Ohm



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Offline Mike In2mud
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« Reply #14 on: February 17, 2009, 01:33:45 pm »
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Hi Edouard, don't worry I have not forgotten about the layout, I have had to 'ink' the pencil in to make it readable and make a key to the layout, so that you can understand it. I originally laid out the circiut for my own use and did not realise others would be interested.
Please be patient, I am still working on it.

All the best Mike.

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Offline Eugene52
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« Reply #15 on: February 17, 2009, 01:59:56 pm »
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Quote:Posted by Delamuerte
I found this, thought it could interest few of u


Common pulse induction search coils with their physical properties Size Shape Turns Wire size Inductance Resistance
? 120 mm Round 36 ? 0.40 mm / 0.14 mm2 405 ?H 1.9 Ohm
? 150 mm Round 31 ? 0.40 mm / 0.14 mm2 394 ?H 2.0 Ohm
? 175 mm Round 28 ? 0.40 mm / 0.14 mm2 387 ?H 2.1 Ohm
? 200 mm Round 26 ? 0.40 mm / 0.14 mm2 406 ?H 2.2 Ohm
? 250 mm Round 22 ? 0.40 mm / 0.14 mm2 380 ?H 2.3 Ohm
? 300 mm Round 20 ? 0.50 mm / 0.20 mm2 390 ?H 1.6 Ohm
? 400 mm Round 17 ? 0.50 mm / 0.20 mm2 396 ?H 1.8 Ohm
? 500 mm Round 15 ? 0.50 mm / 0.20 mm2 400 ?H 2.0 Ohm
1.0 x 1.0 m Square 10 ? 0.66 mm / 0.34 mm2 406 ?H 2.0 Ohm
1.4 x 1.4 m Square 8 ? 0.66 mm / 0.34 mm2 387 ?H 2.2 Ohm
1.8 x 1.8 m Square 7 ? 0.80 mm / 0.50 mm2 398 ?H 1.7 Ohm




Great posting Delamuerte . Your P.I. search coil information is very accurate .  All inductances are in micro-henries and all d.c. resistances are around 2 ohms . I am trying to copy this so I can compare with my P.I. coil information I have . You should re-post this in a PDF or zip-file if you can so everyone can download a copy !......................Regards.................Eugene52



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Offline DelamuerteTopic starter
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« Reply #16 on: February 17, 2009, 02:28:12 pm »
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Great Mike...patient I'll be.
In the same idea, a pinpoint schematic on stripboard? Anybody?

 Cool Cool Cool Smiley

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Offline Mike In2mud
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« Reply #17 on: February 20, 2009, 09:27:51 pm »
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Hi Edouard, I have finally finished the ?Strip Board? layout.
I have put it under the ?New Topic? heading below:-
 ?Strip Board? layout for the ?Bandido II U Max?.
This is to make it easier to find for anybody else who wants to build it.
Thank you for your patience.

Best regards Mike


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Offline DelamuerteTopic starter
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« Reply #18 on: February 23, 2009, 06:45:07 pm »
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here are some freewares for your boards schematics

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http://www.lelectronique.com/ressource/logiciel/categorie-Conception-6.php


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