Make: Robotic Arms

35Chapter2: Two Degrees of Freedom

careful not to rotate the output shaft of the

motor (Figure

2-9

).

STEP 11

Using four more bolts and nuts, connect the

link 2 assembly from the previous step (Figure

2-10

).

With step 11 complete, our first robotic

arm is fully assembled and ready for action

(Figure

2-11

)! All that’s left now is testing and

calibration. At this point, it may be a good

idea to rewire your servos and reapply power.

Because the code from the previous step is

already uploaded to the Arduino, you should see

your robotic arm look just like the

image at right. If, for whatever reason, your arm

does not look straight up and down, you ...