Make: Robotic Arms

116 Make: Robotic Arms

our y value represents our up-and-down motion, and our x

value represents our left-and-right motion, so all we’ll need to

do to determine the necessary points is some simple addition

(Figure

6-13

).

Let’s start in the lower left-hand corner of the square. If we

want our first point to be exactly in line with the motor shaft of

servo 1, we’ll need an x value of 0 and a y value that represents

how high we’d like to place the bottom of the cube. To keep

things nice and symmetrical, we’ll give it a value of 80 mm,

giving us the coordinates (0, 80). Next, we’re to going to want to

navigate to the lower right-hand corner. We want ...