Polar Kinematic 101

The creator references "Mark Rober's Sand Garden design" as an educational resource for understanding the polar kinematic mechanism. While the Dune Weaver uses a different implementation, "the principles are the same."

Key Resource

A video explanation is recommended, covering the topic from timestamps 283-499 seconds, demonstrating how the kinematic system functions in both designs.

Watch the video: Mark Rober's Sand Garden (5:23 - 8:19)

Understanding the Mechanism

The polar kinematic system uses two motors to control movement:

1. Radial Motor (Rho): Controls the distance from the center
2. Angular Motor (Theta): Controls the rotation angle

By coordinating these two movements, the system can draw complex patterns in the sand. The magnetic ball underneath follows the magnet attached to the carriage system.

Why Polar Coordinates?

• Circular patterns: Naturally suited for creating spirals and circular designs
• Efficient: Minimizes the number of moving parts
• Smooth motion: Provides fluid, continuous drawing
• Scalable: Works with different table sizes

Community Support

For additional help understanding the kinematic system or troubleshooting your build, join the project's Discord community at https://discord.gg/YZ8PTezVHt.