Make: Robotic Arms

70 Make: Robotic Arms

STEP 3

Next, mount servo 2 next to servo 1 in the third

position on the base plate. This time, the shaft

of the motor should face the left, opposite from

servo 1. Both motor shafts should be facing

inward, as show in the image (Figure

4-3

).

STEP 4

Now that both motors are mounted, we can wire

our two servo motors to our Arduino. Just as

we did with our first robotic arm, we’ll be using

digital pin 3 for servo 1 and digital pin 5 for servo 2

(Figure

4-4

).

STEP 5

Next, we need to program our servos to begin

at a specific starting position. This bit of code is

almost identical to our other basic servo code—

the only difference is ...