Make: Robotic Arms

41Chapter2: Two Degrees of Freedom

into the pins using the digitalRead() command.

Once we have set up our push-button variables,

we can use our four sets of conditional statements

to either increase or decrease the values of our

position variables based on our push-button

presses. Lastly, we tell our servos to move to

whatever angle the position variables represent.

STEP 3

Once your code complies correctly, upload your

code. If all goes to plan, you should be able to

independently control the angle of both of the

motors in your arm (Figures

2-13

and

2-14

) by

pressing the two sets of push-buttons. (If you’d

like the motors to move faster or sl ...