Lesson 4 · Build The Main Robot Arm

Suggested Time: 30-60 minutes

Lesson Plan


Need materials? Purchase the Barnabas Robot Arm at our e-store.

Classroom sets available. Contact us at info@barnabasrobotics.com to inquire.

Lesson Overview

In this lesson we will assemble the main robot arm.

Tutorial Video


STEP 1. Attach Main Arm

Attach main arm using:

  • 2 x M3x12 Screws
  • 2 x M3 Nuts (Regular)
  • 1 x Wood Piece

STEP 2. Attach Secondary Arm

Attach secondary arm using:

  • 5 x M3x6 Screws
  • 2 x M3x10 Screws
  • 1 x M3 Nut (Nylon Lock)
  • 7 x Wood Pieces

IMPORTANT: Do not overtighten. Make sure that the joint can move easily. If it is too tight, your motors will not be able to move the joint during robot arm operation.

Side 1 Side 2

Use the supplied wrench to tighten the lock nut. Do not overtighten.

Additional Resources