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Schematic of a digital compass

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asic1984

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hi all

where can i find the schematic of digital compass

thanks for help
 

Elavionic

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fluxgate compass schematic

Search phillips site. They have an IC for compass, i believe that the part number is KMZ51 . But itsn't easy to build one, you need tho interface the Ic with a µC, just buy one already assembled for use. See at https://www.robot-electronics.co.uk/shop/Compass_CMPS032004.htm.
And they have many others modules for robotics.
 

hill

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digital compass schematic

Search also the Circuit Celler Magazine. I think there is an artical about that. It's some issues back in this year.
 

FoxyRick

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homemade digital compass

Compass schematics seem hard to find. Elektor have a simple project for a Lego RCX in the May 2002 issue - I've attached it here. It uses a Pewatron type 6945 compass sensor.

You may find more information in the manufactures datasheets here:

https://www.pewatron.com/GB/default.htm

Cheers,
FoxyRick.
 

aslm

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kmz51 compass

I have been searching for information about this aslo. My result is that the sensor to use is the KMZ51 from philips (got 3 of them already) There are also simular sensors and a lot of theoretical info from Honywell but they are much more expensive and harder to buy.

As I understand there are two ways of bulding a compas, the simpel way with two sensor and always keep the unit in upright position, the oter variant is using 3 magnetics sensors and do a tilt compensation with a two axis gyro of some sort. The last solution would be rather complicated, and where to get gyros thet dont cost 100s of $?

Some links with information i found after much searching...

KMZ51 for lego robots, with simple schematics:
https://www.convict.lu/Jeunes/CompassSensor.htm

Possible source of gyros but how to buy?
https://www.vti.fi/en/index.html

Some schematics, but nothing compleat.
https://magnetometer.captain.at/

At las I also attache two schematics for KMZ51 that I found on the net somwhere, cant remember where.

If someone has more info or hands on experience, please comment...

regards Me
 

brmadhukar

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digital electronic compass wiki

Hi,
Some of the GPS recievers have this integrated with the handheld module.
B R M
 

samsuffy

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homemade fluxgate compass

Hi aslm

My result is that the sensor to use is the KMZ51 from philips (got 3 of them already)

How did you get them ?... samples ?
 

aslm

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kmz51 schematic

KMZ51 can be order from ELFA (www.elfa.se) witch is a electronics supplier of northern europe. A bit expensive tho, 7,34 euro...

I dont know to what contrys the ship to (only tried sweden) but I know the now have resellers in several european contrys.

re Me
 

sajal1975

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digital compass circuit

hi,
u can find useful data at
MODERATOR ACTION: link provided by you is not working so removed
 

grsr

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3d digital compass

any can write simple code for kmz51 ????
i can't drive copens coil and filip coil
can you help me ?????
 

MichelM

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digital compass datasheet

hello

Microchip has a application note
AN996, Designing a Digital Compass Using the PIC18F2520

h**p://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en024198
 

auto_mitch

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digital compass schematics

Electronic Compass Design
 

ediamondsrt

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+digital compass +schematic

can anyone provide a pdf file for this circuitrywhich covers all data?

in above file datasheet is not included from here i can got that
 

coshkun

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buy kmz51 ic

Calibration is another tough issue i think.What do you think about this?
 

watermelon

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digital compass europe suppliers -china

Use a circular fluxgate or two (may be three) orthogonal straight fluxgates.

You will get 2D/3D vectors for the magnetic field.
Search internet for fluxgate compasses. Fluxgate sensors can be home brewed.
I remember Practical Electronics had one design of home made Fluxgate compass in '70 or '80s.

Also, check
http//geotech.thunting.com/pages/mag/projects/fmx1/fmx1.pdf

http//geotech.thunting.com/pages/mag/projects/cheeseman/cheeseman_mag1_150.pdf
http//geotech.thunting.com/pages/mag/projects/cheeseman/cheeseman_mag2_150.pdf


http//en.wikipedia.org/wiki/Fluxgate_compass
http//crocus.physics.mcmaster.ca/Magnetometer/TW/
http//www.freepatentsonline.com/5165269.html

Added after 2 minutes:

And also check the related patents at
https://geotech.thunting.com/cgi-bin/pages/common/index.pl?page=mag&file=patents.dat
There may be more patents, you can check on USPTO and espacenet.
 

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