ζ-ζ' (“zeta-zeta-prime”) Zen drive, is a planetary gear based mechanics to position a magnet underneath a round Zen table.

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TODO (correct formulas, add drawing)
x = R × (cos(ζ) + cos(ζ'))
y = R × (sin(ζ) + sin(ζ'))
conversely:
σ = atan2(y,x)
δ = acos(√(x²+y²)/(2R))
ζ = σ - δ
ζ'= σ + δ

TODO

Liste de fournitures

• PTL-ino
• 2 × 28BYJ-48 geared steppers
• Laser-cut plexiglass gears

• Instagram links:
  • Gears: https://www.instagram.com/p/BsjDjYKl4y4/
  • Video: https://www.instagram.com/p/BswBwUOF26b/