Wizard's Chessboard

Tell us the story of your project: 

I wanted to make something cool while challenging my proficiency with Arduino and building electromechanical systems. I was interested in using magnets to do something to make it appear magical so I basically set out to make the 'Wizard's Chess' game from the Harry Potter series. Game is between two people sharing the computer; the computer isn't the second player unfortunately...yet.

Featured as a Top Project in the December 2018 issue of HackSpace Magazine (https://hackspace.raspberrypi.org/)

How-to: 

The board is hooked up to a computer and requires the player to input a square address of the piece to be moved and the new location for the piece. The electromagnet is moved by two stepper motors and timing belts. Each piece has a loose steel ball bearing inside to allow them to easily slide around.

The biggest problem I had was getting the vertical axis to move smoothly without catching and missing steps. It doesn't happen often but when it does I just had to close the serial monitor and reopen it which reset the Arduino and zeroed the magnet position.

Pieces are initially offset to the corner and moved along the lines between squares to avoid colliding with other pieces.

Difficulty: 
Duration: 
Share a "Show & Tell" video.: 
https://www.youtube.com/watch?v=17uHfl7AOzo
Collaborators: 
michaelguerero9
Number of Forks: 
0
Tools: 
Name: 
Arduino Uno
Quantity: 
1
Name: 
a4988 Stepper driver
Quantity: 
2
Name: 
Nema 17 stepper motor
Quantity: 
2
Name: 
Rubber timing belt spool
Quantity: 
1
Name: 
Linear bearings
Quantity: 
5
Name: 
8mm steel rod stock
Quantity: 
1
Name: 
MDF
Quantity: 
1
Name: 
Acrylic plastic sheets
Quantity: 
1
Name: 
Steel ball bearings
Quantity: 
32
Name: 
arduino ide
Quantity: 
1
Name: 
electromagnet
Quantity: 
1
Name: 
9V, 1.5A Wall Wart
Quantity: 
1
Team Members: 
Team member name: 
michaelguerero9
What role did this person play on the project?: 
Project Lead
Public
Sort Order: 
0
Teaser: 
Moves chess pieces around the board invisibly and seemingly magically.
Aha! moment: 
I realized its better to spend a little bit more money to get good tools and materials at the beginning rather than to struggle to make cheap stuff work only to replace it later on anyway.
Uh-oh! moment: 
Being a mechanical system it was very important to machine everything precisely otherwise the sliders would snag and cause the steppers to miss steps and no longer know their position.
Show & Tell video as default: 
Creation Date: 
Thursday, October 25, 2018 - 08:53