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Homebrew tilt compensation?

Honeywell's datasheet on the HMC6343 compass states that tilt compensation is made using data from a built-in three axis accelerometer. I thought that a cheaper three-axis magnetometer- accelerometer combination is much more reasonable for small scale projects, so my question is: What kind of calculations do I need to perform to get a decent degree of accuracy?


8$ compass

4 weeks ago i ordered the dc-ss503 magnetic sensor module with tilt compensation, and i'm now trying to interface it with arduino. so far i have obtained the 4 values from the i2c bus, but i can't understand how to actually get a heading from it. this is the datasheet i found, which i know is the right one: http://gongxue.cn/lixueyuan/UploadFiles_8285/201004/2010042114001679.pdf .

does anyone have any experience with this module and can possibly help me? thanks

magnetic strip physical feedback

Check this article at hackaday.com The original post was on a myspace-page, but I cant manage to link to the single article