Since we need to know the localization of the robot in an interior space, we decided we need to develop a way to calculate/estimate it.
We decided we would use some physics algebra and estimate the localization based on bearings and distance (calculated based on speed of the robot). This arises a series of questions, like: Is the speed constant? Is the speed influenced by the battery level? Can we make the robot rotate on exactly the angle we want? Can we make the robot stop exactly when we want? But the main problem, is that the Lego NXT kit doesn't have a compass, therefore we had to order one HiTechnic NXT Compass Sensor. Togheter with cables it costed us more € 104.00.
