Make: Robotic Arms

95Chapter 5: The Joy of Joysticks

One of the first things you may notice about this new code example is two

new variables in the section of code about our void setup—our position

variables. They are given an initial value of 90, right in the middle of the

servo’s range of motion—a great place to start the program. Next, inside the

void setup, all we need to do is start up the Serial Monitor, which will allow

us to see the values of our position variables as they change.

Once inside the void loop, first, we need to grab the value of our two joystick

variables by using the analogRead() command on the pins connected

to our joystick. With the value ...