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Spirograph Machine

Two servo motors controlled by a Raspberry Pi Pico trace spiralling geometric patterns on paper.

Electronics Robotics 3D Modeling

A mechanical spirograph driven by two servo motors, with all structural parts designed in Fusion 360 and 3D printed.

Build

A Raspberry Pi Pico controls two servo motors through calculated angle sequences, moving a pen in a spiralling path to produce geometric patterns. The gears, table, servo mount, and arm pieces were all modeled from scratch.

Gears and table assembly

3D-printed table top view

Arm piece in action

Completed spirograph

Parts

  • Raspberry Pi Pico
  • 2× servo motors
  • Custom 3D-printed gears, arm, servo mount, and table base