Moire Clock

By Shachar Cohen, Keren Gispan, Noam Spivak

Introduction

This project explores the design and development of a clock based on the Moiré effect, where the relative motion between layered patterns generates dynamic visual forms to display time. Drawing inspiration from Gabrielyan’s (2007) research on multi-ring Moiré patterns for fast and accurate optical indication, the project adapts this principle to represent both hours and minutes. Unlike conventional clocks, the mechanism operates without a central drive, a constraint that significantly shaped the overall design. Instead, an external driving unit connected via a timing belt controls the motion of the layers, with time revealed through the shifting interaction between these patterned elements.

Example of the Moire effect
Example of Moire Effect from by Emin Gabrielyan @ wikipedia

The technique

First part of Moire Clock construction
Second part of Moire Clock construction

The clock is made up of 9 different parts:

  1. Concrete cover (casting)
  2. Drive box (motor, two gears driven by the motor, bearing, raspberry pi and power supply) with a rail for the timing belt (3D printing)
  3. Cover for a drive box used for wall mounting (Lazer cutting)
  4. Threaded tightening (COTS product)
  5. Concrete cover (casting)
  6. Dynamic acrylic panel (laser cutting and UV printing)
  7. Dynamic ring (3D printing)
  8. Static ring mounted on the wall (3D printing)
Final Moire Clock construction
Final construction

Gallery

Raspberry Pi
Moire Clock