Make: Robotic Arms

25Chapter 1: The Foundation of Robotic Arms

If we write out the logic of our conditional statement

and translate it from speaking robot into English,

the logic of our conditional statements looks

something like this: “If push-button 1 is pressed,

make the number variable pos larger by one every

50 milliseconds; if push-button 2 is pressed, make

the variable pos smaller by one, also every 50

milliseconds.” With that sorted out, the last thing

we need to do is tell the servo to go to whatever the

value of pos happens to be as we press our push-

buttons. With that, our code is complete.

Now, push-buttons are great for sending simple

signals to our ...