Now that you have a wheeled or tracked vehicle, you may want to do some basic path planning. To do this, you need a framework to understand where your robot is and determine the location of the goal. One of the most common frameworks is an x-y grid. The following diagram is an example of this type of grid:
There are three key points on this grid that you need to understand. Here is an explanation of them:
The lower left point is a fixed reference position. The directions x and y are also fixed and all other positions are measured in relation to this position and these directions. Each unit is measured with regards to how far the unit travels in time in a single unit.
Another important point is the starting location of your robot. Your robot will then keep track of its location using its x and y coordinates, the position with respect to some fixed reference position in the x direction, or the position with respect to some fixed reference position in the y direction to the...