Moire disc illusion - single DC motor version

Part number

Part name

Quantity

Note

S30K

motor

1

DC 12V 14RPM S30K

DC power connector

1

The case is designed with an 8 mm diameter hole for this connector.

608

Ball bearing 608

3

Probably the most common bearings out there

DIN 7982 3x12

Screw

4

2 for the motor, 2 for the PCB

DIN 7982 3x20

Screw

4

2 for front lind, 2 for back lid

DIN 7991 3x10

Short bolt

1

Holds the pinion gear in the motor shaft

⌀6x2mm N42

Magnet

16*

These are the same magnets people use in gridfinity boxes. *The mechanims uses 8 magnets and each disc also uses 8 magnets.

Part number

Part name

Quantity

Note

XIAO ESP32-C3

Microcontroller

1

MAX14870

Motor driver

1

https://www.pololu.com/product/2961

5V step down module

1

The step down module takes the input voltage and reduces it to 5V for the LEDs and the microcontroller. The module I used seems to be proprietary for this Czech e-shop. https://dratek.cz/arduino-platforma/1738-step-down-modul-napajeni-mini-buck-nastavitelny.html I thought it would be more widely available. Nevertheless, any DC/DC 5V buck converter should work as long as it's connected in the same way.

7-pin headers

2

For mounting the XIAO

5-pin headers

2

For mounting the driver

B3B-XH-A

3-pin connector

1

For connecting the LED strip

B2B-XH-A

2-pin connector

1

Board power connector

WS2812B 60 LED/m

LED light strip

9 LEDs

I used self adhesive strip. At 60 LED/m the section has 9 LEDs.

Part number

Part name

Quantity

Note

04P10

front_disc_hub

1

04P11

back_disc_hub

1

04P12

disc_border

16

04P13

disc pattern segments

8 or 16

Depending on the how the disc is split you print either 8 or 16

04P14

disc_retainer

2

04P21

base

1

04P22

pinion

1

04P23

outer_cog

1

04P24

inner_cog

1

04P25

shaft

1

04P26

back_lid

1

04P27

front_lid

1

04P28

front_flange

1

04P29

washer

1

The washer goes on the shaft under the 04P23

DIN472

circlip-j22-din-472

1