HardLabs

Magnetic chess board

nirvaankohli·magnetic-chess-board·hardware/magnetic-chess-board/magnetic-chess-board.kicad_pcb

Magnetic chess board layout, top view — open source Raspberry Pi board by nirvaankohli
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About the Magnetic chess board

Magnetic chess board is an open source Raspberry Pi PCB design by nirvaankohli, published on GitHub. It is a 2-layer board measuring 207.1 × 188 mm, with 132 components from 5 distinct parts.

Its main chip is the RaspberryPi_Pico_W, from the Raspberry Pi family. By type, the board carries 66 switches, 64 diodes, 1 module and 1 connector.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

A magentic chess board that tracks your moves, shows you possible moves, and at the end of the game uploads all game states to your computer so you can analyze them.

Magnetic Chess Board is a chessboard with electromagnetic sensors, two key switches, and an OLED display. It tracks each move you make on the board and uploads the game data to a local web server running on your device.

The chessboard itself is powered by a Raspberry Pi Pico W. The board connects wirelessly to your host device and allows you to play physically while having all the benefits of being able to analyze your gameplay later. Games are stored in json & svg format and can also be seen through the web interface on your own device.

Magnetic chess board, from the project README
From the project README

Main components on the Magnetic chess board

RaspberryPi_Pico_W

Magnetic chess board bill of materials (BOM)

132 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RaspberryPi_Pico_W
A1
1
OLED_128x64
J1
2
~
S1, S2
64
SW_Reed
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +56
64
1N914
D1, D2, D3, D4, D5, D6, D7, D8 +56

Magnetic chess board design files

The KiCad project lives in the nirvaankohli/magnetic-chess-board repository on GitHub; these links point at the commit this page was built from.

Magnetic chess board: common questions

What microcontroller does the Magnetic chess board use?

The Magnetic chess board is built around the RaspberryPi_Pico_W, from the Raspberry Pi family.

How big is the Magnetic chess board?

The Magnetic chess board measures 207.1 × 188 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Magnetic chess board?

132 components, from 5 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Magnetic chess board design files?

From the nirvaankohli/magnetic-chess-board repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Magnetic chess board design in my own project?

The repository has no license, so all rights stay with nirvaankohli. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Magnetic chess board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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