Where can I get a digital compass sensor?

[EHaskins]

I'm looking for a digital compass sensor. I have found this sensor (http://www.sparkfun.com/commerce/product_info.php?products_id=236), I also found this one (http://www.robotobjects.com/scripts/prodView.asp?idproduct=408).
The first one from Sparkfun looks hard to interface with and would be about 70% of my budget, and the second one isn't accurate enough for my project.

I was hoping to find a sensor for under $50 accurate to less then 1 - 2 degrees.

I have already spent many hours looking for this, but haven't found anything that's in my price range and is accurate enough.

[divergentdave]

I'm looking for a digital compass sensor. I have found this sensor (http://www.sparkfun.com/commerce/product_info.php?products_id=236), I also found this one (http://www.robotobjects.com/scripts/prodView.asp?idproduct=408).
The first one from Sparkfun looks hard to interface with and would be about 70% of my budget, and the second one isn't accurate enough for my project.

I was hoping to find a sensor for under $50 accurate to less then 1 - 2 degrees.

I have already spent many hours looking for this, but haven't found anything that's in my price range and is accurate enough.


Wouldn't this be foiled by the metal chassis of the bot, electronic components, and other things?

[EHaskins]

I thought about this, but thought I would test it(if I could get a good sensor).

[Francis-134]

I think our team used this (http://www.junun.org/MarkIII/Info.jsp?item=26) compass for some testing. Coincidentally, this compass is ready to use with the WPILib and easyC (gotta use the usercode block though). It will give you values between 0-360 degrees, in correlation to magnetic north. The documentation for WPILib (http://users.wpi.edu/~bamiller/WPILib/) says that its very important to watch out for the robot's motors, as they will of course create a magnetic field larger than the earth's field.

[EHaskins]

I think our team used this (http://www.junun.org/MarkIII/Info.jsp?item=26) compass for some testing. Coincidentally, this compass is ready to use with the WPILib and easyC (gotta use the usercode block though). It will give you values between 0-360 degrees, in correlation to magnetic north. The documentation for WPILib (http://users.wpi.edu/~bamiller/WPILib/) says that its very important to watch out for the robot's motors, as they will of course create a magnetic field larger than the earth's field.
That one looks ok.

[Josh Siegel]

Try the Parallax Hitachi HM55B module. It's a bit of a pain to interface, but the results are decent and the price is fair.

http://www.parallax.com/detail.asp?product_id=29123

[kE7JLM]

We have the some compass and we are trying to make it work with a 2004 robot controller. We can't get it to work, please help!