Make: Robotic Arms

135Chapter 7: 3D Robotic Arms

that make up the frame of our robotic arm. But

with the micro servo that controls our gripper,

we’ll use a smaller plastic servo horn. The

placement of this new servo component on the

shaft is just as important as it was with the larger

components. This is primarily because these

small pieces can be easily broken if flexed too

far or in the wrong direction. In the next step of

the assembly, you’ll take the gripper component

shown in the image, the plastic servo horn, and

the included self-tapping screws and connect

them as shown (Figures

7-15

and

7-16

).

STEP 18

Next, place the servo horn and the gripper

component onto ...