Hall effect sensors

[canadianpoet2012]

I was hoping someone could give me a Go/No-Go with this one!

It's my understanding that a Hall Effect sensor detects changes in magnetic fields. It translates these changes into electrical signals that can then be messed around with.

Would it be possible to mount a number of sensors in an array and detect the signal from all of them, and use triangulation technology to work out which sensor(s) have the strongest O/P, and then translate that into a compass bearing! I'm not thinking of a numerical bearing or a grid reference, just North/South/East/West sort of thing, with LEDs or something.

Any comments, (good or bad) would be very welcome with this theory. I'm not sure if it is possible, and I don't know how to go about simulating it to check it, but someone may have had some experience with Hall Effects.

P.S: Some of you may have read my post a few months ago called 'Digital Compass'. This is my current thinking on that project.

 

[goodpickles]

I have some knowledge of hall sensors, but not in compass. You may want to check out he following:
**broken link removed**
**broken link removed**


A google search
https://www.google.com/search?q=hall effect compass

 

[kentken]

Take a look at:
**broken link removed**
https://www.allegromicro.com

They both have lots of different sensors for magnetic fields

Kent

 

[chemelec]

It is Quite Easy to make a Digital Compass. And it only requires 1 or 2 Hall effect devices. I do have plans somewhere for one.

Additionally, Sanyo makes a watch that is also a Compass, using this technology.

Take care...........Gary

 

[canadianpoet2012]

Thanks for the two web addresses Kent and goodpickles. They are all interesting, and I've learnt some stuff from them!

Gary, I'm very interested in any information you have about the 'ease' of a digital compass with only two sensors. Could you give me some more detail about that please?

 

[canadianpoet2012]

Oops double post!!!! Silly me!