
7-9
132 Make: Robotic Arms
STEP 9: ATTACHING THE LINK 2 COMPONENTS WITH STANDOFFS
Once both link 2 components are fully connected to motor 2 and motor 3,
we’re going to continue the assembly process by adding some much-needed
rigidity. Now that we’re dealing with 3D robotic-arm designs, it’s often
necessary to provide additional bracing in certain places to avoid bending
or twisting in unwanted areas. After all, when we introduce control systems
based on the inverse kinematics of the arm, pieces bent out of alignment can
cause inaccuracies that can result in problems. Thankfully, bolting two
50 mm standoffs to the link 2 components will do the ...