This is a coffee table that draws in the sand using a single Arduino Uno. It's quite fascinating to watch. The first video is an overview, the second video is the instructions for the build.

Supplies

Arduino Uno x 1
CNC shield V3 x 1
17HS4023 Stepper Motor x 2
TMC2209 Stepper Motor Driver x2
Limit switches x 2
GT2-6MM Timing Belt x 3m
MGN12H Slider rails, 600mm and 550mm
N52 15mm diameter magnets x 6
12V 3A power supply x 1
120 grit fine sand enough to cover the surface.
Stepper motor gears x2
Gears x 4
15mm ball bearing x 1
RGB LED strip
3mm wood sheets for Laser cutting
5mm dowels

Step 1: Coffee Table

Get yourself a wooden coffee table and take off the top. Put a 3mm thick backboard attached to the legs of the table to hold the sand on.

Step 2: Make the Rails

Create another baseboard that will go under the 3mm board this will hold our rails and magnets.I used two rails MGN12H Slider rails, 600mm and 550mm

Step 3: Laser Cut the Parts

Download the cad file and cut the parts from 3mm wood panels, these parts will be used to connect the rails and pulleys together.

Step 4: Assemble the Cut Parts

Use the parts to screw the wood joints to connect the two rails and 5mm dowels to hold the gears. Put the N52 magnets on the main slider rail and connect the timing belt in a H configuration.

Step 5: Connect the Electronics

Connect the CNC Arduino shield board to the Arduino Uno. Connect the motors, sensor and limit switch as shown in the diagram.

Step 6: Upload the Code

Upload the Uno code called sandTable.ino you can also add your designs using sandify.org and use the converter.py code to run in Python to extract the x and y coordinates from the G-code

Step 7: Save Planet Earth!

At Newson's Electronics, we're all about reducing e-waste through repairs, one gadget at a time! If you enjoy my content, consider supporting my youtube channel by exploring my other offerings:

Newsons Electronics - YouTube

📚 Books by the author:

THE LOST SCROLL - https://amz.run/93Gm

HEART OF STONE - https://amz.run/6kXq

UNLOCK YOUR MIND - https://amz.run/6kXr

OVER THE GREAT WALL - https://amz.run/6kXt

Stay connected with me:

👍 Facebook Page: / newsonselectronics