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Offline TeemoTopic starter
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Self design PO detector
« on: December 15, 2012, 11:59:52 am »
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Hello!
I just wrote a long story and it just dissapeared, I'm not going to write it again.
I just share my project. If you have questions about it, I will be happy to answer.

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http://www.digiwood.ee/en/


I'd appreciate any feedback.

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Offline GoldDigger1950
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« Reply #1 on: December 15, 2012, 12:09:08 pm »
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I noticed one thing. Your coil is labeled in uf and should be in Henries.

Posted on: December 15, 2012, 08:07:57 PM
Also, if you want some help with the design from others here, you should include the source code, not just the hex file.

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!

Offline TeemoTopic starter
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Self design PO detector
« Reply #2 on: December 15, 2012, 12:24:13 pm »
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Ok, thanks. Of cource it should be uH.

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Offline xavier
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« Reply #3 on: December 15, 2012, 01:51:07 pm »
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This is quite interesting so I think that I'll build one and see how well it works  . Maybe I'll even be able to give you some pointers on it.

Posted on: December 15, 2012, 08:49:10 PM
Maybe not when I want to get the hex file I get error 404

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So many questions so little time

Offline TeemoTopic starter
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« Reply #4 on: December 15, 2012, 02:15:46 pm »
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I fixed the link for the hex file. Thanks for pointing that out.

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Offline xavier
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« Reply #5 on: December 15, 2012, 02:33:54 pm »
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Quote:Posted by Teemo
I fixed the link for the hex file. Thanks for pointing that out.

No problem

I'll download the Hex file now now but I cant tell when I'll have time to put it together. You should tell us a bit more about the coil, like what is a good size and how many turns to use, what gauge wire did you use on your proto type and how well did it work.

All the best
Xavier     

Posted on: December 15, 2012, 09:27:54 PM
OK got it  Smiley

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So many questions so little time

Offline GoldDigger1950
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« Reply #6 on: December 15, 2012, 03:09:56 pm »
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See? Already the constructive criticism is helping you towards perfection. Now, about the source code . . .

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« Last Edit: December 15, 2012, 03:39:24 pm by GoldDigger1950 »
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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
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Offline TeemoTopic starter
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Self design PO detector
« Reply #7 on: December 15, 2012, 03:38:34 pm »
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Coil that I made is about 20cm dia and 27 turns of 0,75mm2 plastic insulated electrical installation wire (about 20meters if I remember correctly). The inductance is about 90uH. I made coil frame from wood.

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« Last Edit: December 15, 2012, 04:18:02 pm by Teemo »
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Offline GoldDigger1950
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« Reply #8 on: December 15, 2012, 04:52:29 pm »
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Ask our member and moderator Xavier to point you to his coil making instructions. His coils look like they were factory made by a detector manufacturer. They look really good and aren't that hard to make.

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!

Offline xavier
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« Reply #9 on: December 16, 2012, 07:33:21 am »
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Hi Teemo

What Mosfet did you use? I want to have it like you have it in order to be able to give you constructive feed back. I have most of the components ready for assembly just the PIC and the mosfet that are out standing. Will see if I can do the pcb tonight.  Right now I need to make the coil for my VLF  Smiley

All the best
Xavier   



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So many questions so little time

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