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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > GPR & other Geophysical Devices > Magnetometers (Moderator: Eugene52) >

Fluxgate Magnetometer

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	Fluxgate Magnetometer « on: January 24, 2009, 05:48:14 PM »

Fluxgate Magnetometer

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Fluxgate Magnetometer by Carl Moreland

This project is built around fluxgate sensors and a gradiometer chip made by Speake & Co. in the UK. It is extremely easy to build and total parts cost is around $150, less if you have a good supply of surplus hardware. The article presented here was published in the May, 2000 issue of Poptronics magazine, the online version may incorporate subsequent revisions. The version currently posted is Revision 1.2.

The fluxgate sensors and chip used in this project are produced by Speake & Co. in the UK. If you live in North or South America, the distributor is Fat Quarters Software in California. Both addresses follow. Fat Quarters is also the sole distributor of PC boards and parts kits.

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	Re: Fluxgate Magnetometer « Reply #1 on: January 25, 2009, 10:30:57 AM »

I built one of those last year. It was real easy to build and it is extremely sensitive. I can pick up my barbeque grill from 20' away!

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	Re: Fluxgate Magnetometer « Reply #2 on: February 20, 2009, 09:24:56 AM »

Many thanks for offering us a cheaper alternative magnetometer. I would like to build this, but found meanwhile also the EPE pic magnetometer. I wonder which one to make. This one seem more practical because it does not require a computer, but with limited (only a LED??) signalling it could be of any help in the field? I have to identify a large iron object underground in mountains.
Could anyone answer how to alter this design to me more versatile? For ex. to be able to use it without computer but also later at home to connect a computer and process the result?
Many thanks.

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	Re: Fluxgate Magnetometer « Reply #3 on: February 20, 2009, 09:31:05 AM »

(Could anyone answer how to alter this design to me more versatile? For ex. to be able to use it without computer but also later at home to connect a computer and process the result?)

You could hook it up to a data logger, or just write down the readings from a grid pattern and then when at your computer enter the data into your program.

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Data Logger

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	Re: Fluxgate Magnetometer « Reply #4 on: February 20, 2009, 11:02:00 AM »

oRo . Why not build your own for a few hundred bucks . Does the same as the one advertised . The full article is to be found in : Everyday Practical Electronics 2004 . I have to post this in 2 sections . Cornelius

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	Re: Fluxgate Magnetometer « Reply #5 on: February 20, 2009, 11:03:36 AM »

oRo Here is part 2 of the PIC Magnetometry Logger . Cornelius

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	Re: Fluxgate Magnetometer « Reply #6 on: February 20, 2009, 11:12:45 AM »

Thanks Cornelius, A data logger is on the top of my list of things to make or buy.

What Month in 2004 was the article in?

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	Re: Fluxgate Magnetometer « Reply #7 on: February 20, 2009, 11:16:29 AM »

oRo Sorry I forgot to mention that . It was published in the month of July . Cornelius

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	Re: Fluxgate Magnetometer « Reply #8 on: February 20, 2009, 06:18:40 PM »

Cornelius is there a page with components and values? I tried to download this issue, but it did not work out.

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	Re: Fluxgate Magnetometer « Reply #9 on: February 20, 2009, 07:31:24 PM »

	Quote:	Posted by oRo
Cornelius is there a page with components and values? I tried to download this issue, but it did not work out.

Hello everyone , All I found was a small Pic-programming file.... If I find the parts list , which is in the full article , I will post it here !!

Regards.........................Eugene52

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