Lesson 6 · Build and Attach Claw Drive Gears

Suggested Time: 15-30 minutes

Lesson Plan


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Lesson Overview

In this lesson we will build and attach the claw assembly drive gear.

Tutorial Video


STEP 1. Build Claw Drive Gear Assembly

Assemble claw drive gear using:

  • 2 x M3x6 Screws
  • 1 x Servo Horn
  • 1 x Servo Screw
  • 2 x Wood Pieces
Top View Bottom View

STEP 2. Attach Claw Drive Gear Assembly

Attach claw drive gear to servo using:

  • 1 x Servo Screw

IMPORTANT: Note that the servo motor can only move 180 degrees. Make sure that the arm can turn fully between the two positions shown below before fastening the screw. You may need to take the servo coupling off of the servo motor shaft and reposition it a few times to get it right.

Closed Position Open Position

Additional Resources