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SO-101 robot arm: replacing servomotor 1

A nine-step guide for the open-source SO-101 arm: take off the moving jaw, swap the servomotor, and put it all back. Every screw and part lights up in 3D as you go.

Open in 3D
Steps
9
Tools
Phillips-head screwdriver
Parts
Eight M3 × 6 mm pan-head screws (DIN EN ISO 7045), the moving jaw, servomotor 1 and its cable; a replacement servomotor
Design
TheRobotStudio
Licence
Apache-2.0
Design files
github.com/TheRobotStudio/SO-ARM100

The nine steps

  1. Step 1: Unscrew the initial set of screws

    Unscrew the first set of screws to begin the disassembly process. Use a Phillips-head screwdriver.

    Highlighted in 3D: Four M3 × 6 mm pan-head screws

  2. Step 2: Unscrew the remaining screws

    Proceed to unscrew the remaining four screws. Use a Phillips-head screwdriver.

    Highlighted in 3D: Four M3 × 6 mm pan-head screws

  3. Step 3: Remove the moving jaw

    Remove the moving jaw part from the assembly.

    Highlighted in 3D: Moving jaw

  4. Step 4: Remove the wiring on the servomotor

    Remove the wiring on the servomotor in order to be able to replace it.

    Highlighted in 3D: Servomotor cable

  5. Step 5: Replace the servomotor

    Replace the old servomotor with the new servomotor.

    Highlighted in 3D: Servomotor

  6. Step 6: Wire the new servomotor

    Plug the wiring of the new servomotor.

    Highlighted in 3D: Servomotor cable

  7. Step 7: Install the moving jaw

    Install the moving jaw on the new servomotor.

    Highlighted in 3D: Moving jaw

  8. Step 8: Screw the moving jaw

    Screw the moving jaw’s first set of screws. Use a Phillips-head screwdriver.

    Highlighted in 3D: Four M3 × 6 mm pan-head screws

  9. Step 9: Screw the moving jaw

    Screw the moving jaw’s second set of screws. Use a Phillips-head screwdriver.

    Highlighted in 3D: Four M3 × 6 mm pan-head screws

Step text from the public TwinWorks procedure. Part names from the arm’s 3D model.

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  title="SO-101: replacing servomotor 1" width="800" height="600"
  allow="fullscreen" loading="lazy"></iframe>

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