Gears and Ratios

Gear ratios and a rotation sensor could be very helpful in determining the exact distance you want a robot to go. If you are able to measure the circumference of a wheel, then you are able to calculate exactly how many rotations of it you want to occur. This is where the rotation sensor comes in. It can be used to measure exactly how man rotations of an axle occurred, and thus the distance a robot has traveled or needs to travel can be measured exactly.