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Wide view of the TUMBRINK workshop with a starship miniature on its stand
Work

Motion Control

Eight axes built to make the camera repeat the impossible.

A camera move you can build.

Motion-Control Rig V3 is an eight-axis camera system built from wood, aluminium, pillow-block bearings and a second-hand slewing ring. It was designed and built together with my father for repeatable multi-pass miniature photography.

A Raspberry Pi 5 solves the camera-path kinematics. An ESP32 with TMC2209 drivers translates those paths into stepper movement across base pan, tilt, a radial slide, secondary pan and tilt, roll, a travelling counterweight and a dolly.

The machine is operational and still evolving. Its job is not to look futuristic; its job is to put a real camera through the same move again when light, miniature or performance changes.

The machine, as built.

System
8 coordinated axes
Reach
1.2 m radial arm / 1 m dolly
Motion
ESP32 / TMC2209
Kinematics
Raspberry Pi 5 / damped least squares
Camera
Fujifilm X-S20
Build
Wood / aluminium / workshop parts

Eight ways to move one lens.

No measured repeatability claim is published yet. The system is built for matched multi-pass paths; the next job is to quantify how closely it returns.

  1. Base pan
  2. Tilt
  3. Radial
  4. Pan 2
  5. Tilt 2
  6. Roll
  7. Counterweight
  8. Dolly
KORETH