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Offline alimanTopic starter
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« Reply #280 on: February 09, 2010, 08:04:13 am »
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Cornelius, in the Sandbanks instructions they talk about making the detector more sensitive to gold , also the Response time. I take it that you have already made those modifications to the detector or do I have to ? The detector was having difficulty detecting some gold rings I have. Smiley

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Offline Cornelius
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« Reply #281 on: February 09, 2010, 08:14:16 am »
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Ali , I made those changes already  ( the two blue capacitors adde on to the PCB ) . You have to learn the settings of VR1 and VR2 .   Cornelius

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Offline alimanTopic starter
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« Reply #282 on: February 09, 2010, 09:12:00 am »
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 In the coil housing and around it there must be absolutely No Metal parts, is this correct ?
 Also when you say ,"learn the settings" you mean by trail and error.

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Offline Cornelius
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« Reply #283 on: February 09, 2010, 09:55:57 am »
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Ali.  No metal close to the coil. Settings are found by holding  Gold close to the coil and set the detector so that you hear a sound .  The settings are than for gold only ( and maybe silver .  For iron you find a different setting . Put  a dial under the knob and make some marks for the different settings .  Cornelius

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Offline alimanTopic starter
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« Reply #284 on: February 09, 2010, 10:14:32 am »
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Thanks Cornelius, I got it now.

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« Reply #285 on: February 13, 2010, 04:28:01 pm »
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Hey Aliman

What?s happening? Did you get a chance to test your detector and did you come right with your settings? I?m eager to see some of your finds.

Regards xavier


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So many questions so little time

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« Reply #286 on: February 13, 2010, 08:10:24 pm »
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The SandsBanks is a cool platform to build on.

There is a lot of things you can do to improve the little beast.

It's the most basic of PI machines and is Improvable, build able and You can manipulate it to do things!

You can pull in the timing to make it hotter! Wise



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Offline xavier
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« Reply #287 on: February 14, 2010, 06:44:16 am »
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Hi Homfire

I take it that you would pull in the timing on the 555 IC1?

Regards Xavier

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So many questions so little time

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« Reply #288 on: February 14, 2010, 07:55:27 am »
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To start, IC1 then speed up IC5 and 7 Great.

In the article read under Response Speed.

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« Reply #289 on: February 14, 2010, 09:32:22 am »
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Can you please post the article? I would like to have it.

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So many questions so little time

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