Looking for: Magnetic Field Sensors for Earth Magnetic Field

M

Markus Mandl

Guest
Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.

The ones I know of are:

Autonnic
http://www.autonnic.com/
PNI
http://www.pnicorp.com/productDetail?nodeId=c33
Honeywell
http://www.ssec.honeywell.com/magnetic/
Philips
http://www.semiconductors.philips.com/cgi-bin/catalog/catalog.pl/283/27118/27959/28053/28345/28348/28352/index.html

Information on comparable devices would be greatly appreciated.

TIA

Markus
 
Jamie schrieb:

Markus Mandl wrote:

Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.


glass of water, cork and needle (not the ones you pick off the street)!
place cork in water, place needle on cork.
can't get any cheaper than that!
Click to expand...
Good idea. But I wouldn't be able to more than one or two per day - maybe five
if invited some friends over. Would be getting expensive that way though and
good cork is hard to find nowadays ;)

Markus
 
Markus Mandl wrote:

Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.
Click to expand...
glass of water, cork and needle (not the ones you pick off the street)!
place cork in water, place needle on cork.
can't get any cheaper than that!
 
On Sat, 06 Nov 2004 20:29:25 +0100, Markus Mandl wrote:

Jamie schrieb:

Markus Mandl wrote:

Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.


glass of water, cork and needle (not the ones you pick off the street)!
place cork in water, place needle on cork.
can't get any cheaper than that!


Good idea. But I wouldn't be able to more than one or two per day - maybe five
if invited some friends over. Would be getting expensive that way though and
good cork is hard to find nowadays ;)

You could get a good dozen or so little disks from a decent wine cork,
Click to expand...
although only about half might be usable, depending how fast you drink
the wine. %-}

Cheers!
Rich
 
Rich The Philosophizer schrieb:

....
You could get a good dozen or so little disks from a decent wine cork,
although only about half might be usable, depending how fast you drink
the wine. %-}

....
Click to expand...

That would make it at around 120 until I run out of fingers, but I wouldn't
be able to count them after that anyway :~(
OTOH, if I can't count them any more that means I have got more than plenty -
problem solved.

Anyway, I'm off to find some beer now - saver for the fingers.

Markus
 
"Markus Mandl" <Mandl-Bayreuth@t-online.de> wrote in message
news:cmj6u9$97p$03$1@news.t-online.com...
Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.

The ones I know of are:

Autonnic
http://www.autonnic.com/
PNI
http://www.pnicorp.com/productDetail?nodeId=c33
Honeywell
http://www.ssec.honeywell.com/magnetic/
Philips

http://www.semiconductors.philips.com/cgi-bin/catalog/catalog.pl/283/271
Click to expand...
18/27959/28053/28345/28348/28352/index.html
Information on comparable devices would be greatly appreciated.
Click to expand...
http://www.angelfire.com/super/lego/compass/

While I was about, I found this circuit. The Sun tracker circuit gets
its power from the solar cells, so if the solar cell isn't pointing at
the sun, the circuit can't make it track the sun. Brilliant.
http://circuitos.tripod.cl/schem/r56.gif


TIA

Markus
Click to expand...
 
On Sat, 06 Nov 2004 15:45:06 -0700, Jim Thompson wrote:

On Sat, 06 Nov 2004 20:29:25 +0100, Markus Mandl
Mandl-Bayreuth@t-online.de> wrote:

[snip]

Good idea. But I wouldn't be able to more than one or two per day - maybe five
if invited some friends over. Would be getting expensive that way though and
good cork is hard to find nowadays ;)

Markus

Our oldest daughter made a top for a 30"x60" coffee table with corks
we supplied in about six months ;-)
Click to expand...
Shirley, you have pictures?

;^j
 
In article <cmj6u9$97p$03$1@news.t-online.com>,
Markus Mandl <Mandl-Bayreuth@t-online.de> wrote:
Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.

The ones I know of are:

Autonnic
http://www.autonnic.com/
PNI
http://www.pnicorp.com/productDetail?nodeId=c33
Honeywell
http://www.ssec.honeywell.com/magnetic/
Philips
http://www.semiconductors.philips.com/cgi-bin/catalog/catalog.pl/283/27118/27959/28053/28345/28348/28352/index.html

Information on comparable devices would be greatly appreciated.
Click to expand...
Zetex makes magnetoresistive devices IIRC . I believe they are a lot like
Honeywell.

A company called NVM makes GMR giant magnetoresistive devices. These do
not work as well as the Honeywell parts.




--
--
kensmith@rahul.net forging knowledge
 
Watson A.Name - "Watt Sun, the Dark Remover" schrieb:

......
http://www.angelfire.com/super/lego/compass/

......
Click to expand...

Which led me to:
http://www.dinsmoresensors.com/

I didn't know about them - thanks,

Markus
 
Ken Smith schrieb:

Zetex makes magnetoresistive devices IIRC . I believe they are a lot like
Honeywell.

A company called NVM makes GMR giant magnetoresistive devices. These do
not work as well as the Honeywell parts.
Click to expand...
I knew about the ZETEX part - forgot to put it on the list.

I didn't (don't) know about NVM. Google gave me NVE
http://www.nve.com
who are also doing GMR's.
Could you give me a link to NVM ?

Thanks,
Markus
 
In article <cmlvfn$kh9$01$1@news.t-online.com>,
Markus Mandl <Mandl-Bayreuth@t-online.de> wrote:
Ken Smith schrieb:


Zetex makes magnetoresistive devices IIRC . I believe they are a lot like
Honeywell.

A company called NVM makes GMR giant magnetoresistive devices. These do
not work as well as the Honeywell parts.


I knew about the ZETEX part - forgot to put it on the list.

I didn't (don't) know about NVM. Google gave me NVE
http://www.nve.com
who are also doing GMR's.
Could you give me a link to NVM ?
Click to expand...
No, I'll just admit to getting the name wrong. It is NVE.

--
--
kensmith@rahul.net forging knowledge
 
Markus Mandl wrote:
Hallo,

I am looking magnetic field sensors for an electronic compass.
They shuold be small, affordable (cheap ;) ) and off the shelf.
Click to expand...
Google "fluxgate compasss".

--
Paul Hovnanian mailto:paul@Hovnanian.com
------------------------------------------------------------------
If everything is coming your way then you're in the wrong lane.
 
Ken Smith schrieb:
....
I didn't (don't) know about NVM. Google gave me NVE
http://www.nve.com
who are also doing GMR's.
Could you give me a link to NVM ?


No, I'll just admit to getting the name wrong. It is NVE.
Click to expand...
No problem. It turned out that 'gmr' is a good keyword for Google.
The ones I tried before gave you tons of links to more or less exotic
or academic devices.

Regards
Markus
 
Paul Hovnanian P.E. schrieb:

....
Google "fluxgate compasss".

....
Click to expand...

I am actually looking for a lower cost alternative for a fluxgate sensor
we are currently using. Fluxgates are superior to GMR's but the ones with
floating cores for gimbaling don't like reflow soldering at all.
So you have to solder them by hand - not really cost effective.

Regards
Markus
 
On Sat, 06 Nov 2004 20:29:25 +0100, Markus Mandl
<Mandl-Bayreuth@t-online.de> wrote:

[snip]
Good idea. But I wouldn't be able to more than one or two per day - maybe five
if invited some friends over. Would be getting expensive that way though and
good cork is hard to find nowadays ;)

Markus
Click to expand...
Our oldest daughter made a top for a 30"x60" coffee table with corks
we supplied in about six months ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
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