What components for a navigation solution?
It must be that my previous question http://letsmakerobots.com/node/28808 was wrongly phrased as I am sure there are plenty of knowledgable people here. Anyway, I will try re-phrase my question.
Could anyone be so kind as to tell me what components would make for a complete navigation module. ie. a module that knows where it is.
I am asking in terms of a small household or garden robot so GPS is probably not relevant.
I am thinking a compass/magnometer which will assist in maintaining a heading or in accurate turning of the bot.
I have found a link http://www.starlino.com/imu_guide.html which indicates the combination of an accelerometer and gyroscope would be good for determining the orientation and inclination of the bot, but I guess there must be more one could do with this? Would this combination be enough to calculate the bot's position and orientation relative to it's starting point?
What other components would be usefull?
What components would be redundant when others are included?
Any advice would be much appreciated. I am a noob after all so even basic information or links to tutorials would be appreciated.