Hello people,
Im new to forums, so first an introduction:
We, a good friend a I, are building a "robot" (a vehicle which can move to a point, without further help, avoiding obstacles on the way.). Were doing this as a hobby and part school project.
So we bought a radio controlled car. Which we changed to be controlled by a computer, which will the brains of our "robot". We finished this part, but now we need to know where it is. So we thought of an electronic compass, and a revolution counter. We know that this will give a certain measurement error, but we want this a small as possible.
So went looking for an electronic compass, and found a few solutions for it.
This is the part where I would like some advice, for our choice has fallen on this sensor:
FGM - 2 in conjunction with SCL004 Compass Chip
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**broken link removed**) (PDF files with detailled information are on this page aswell)
We are planning to buy this, but its an expensive sensor and chip, so we'd like to be sure this is a good sensor to buy. And especially that there is no other solution with the same accuracy (its claims to have 1 degree accuracy), but cheaper price.
I hope you can help us