Hi all, I've recently included a gyro on my robot to enable me to determine direction, as working out from wheel measurements got way off very quickly. It's make a really good improvement, however it still ends up in the order of 30/40deg's out after about 10mins of running about...can get wore depending on how much turning the robot does in that time.
I've had a look on the net for solutions to this, and I found a good one on the Seattle robotics page, where a digital compass is used.
I'd ideally like to use some other kind of sensor which would be affected by factor's external to the bot if possible (i.e. earths magnetic field) as I want to mount it inside the bot where there are all sorts of electro-magnetic transmissions - RF/motors etc.
Would an accelerometer help? Any one tried this?
Thanks and Regards