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A smart chess board that connects to your phone and automatically makes moves

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Smart Chess Board

What?

A smart chess board that connects to your phone and automatically makes the moves you and your opponent make on the screen. It can even play against you! It works by moving a magnet under the board, thus also moving the pieces which will have magnets in them.

Why?

Because I had this idea in the back if my head for a long time and I thought this was the perfect time. Also, I wanted a challenge, something new.

How do I use it?

Well, I haven't thought it through, but my idea is to also make an Android app that connects through Bluetooth with the board so you can visualise the moves there, as well as make new ones. I also hope to allow players to make their own moves on the board using the Hall sensors that are in the board.

3D Render: image

PCB that has the Raspberry Pi on it: image

The other PCB, which will be used 3 times to form a grid: image

Wiring diagrams for the special PCB: image image

Wiring diagram for tileable PCB: image

Bom table:

Name Price/unit Amount Shipping Product Cost Notes Link
X-axis guiderail $13,37 1 $0,00 $13,37 MGN9H, 350mm https://www.aliexpress.com/item/1005002516956172.html
Y-axis Steel Rod $2,21 2 $1,12 $5,54 6mm, 350mm https://www.aliexpress.com/item/1005007648646117.html
Y-axis Linear Bearing $1,26 2 $0,00 $2,52 LM6UU https://www.optimusdigital.ro/ro/mecanica-rulmenti/3812-rulment-liniar-lm6uu.html
Stepper Motor $3,88 2 $0,00 $7,76 https://www.optimusdigital.ro/ro/motoare-motoare-pas-cu-pas/101-driver-uln2003-motor-pas-cu-pas-de-5-v-.html
Servomotor $3,20 1 $0,00 $3,20 https://www.optimusdigital.ro/ro/motoare-servomotoare/26-micro-servomotor-sg90.html
Neodymium Magnet 6x3mm $2,26 1 $0,00 $2,26 https://www.emag.ro/magnet-neodim-disc-6mm-x-3mm-00004824/pd/DZW0Y6BBM/
Neodymium Magnet 10x3mm $6,97 2 $6,48 $20,42 100pcs https://www.aliexpress.com/item/1005010439392352.html
GT2 Belt $2,31 1 $1,82 $4,13 https://www.robofun.ro/3d-printer-cnc/curea-gt2-la-metru-liniar.html
M3x6 Headless Screws $0,08 10 $0,00 $0,77 https://www.optimusdigital.ro/ro/mecanica-suruburi-si-piulite/5785-m3x6-mm-urub-de-fixare-cu-cap-plat.html
M3x6 Screws $0,02 100 $6,00 $8,00 Minimum quantity https://www.tme.eu/ro/details/m3x6_d912-a2/suruburi-cu-piulita/kraftberg/
M3x10 Screws $0,03 100 $0,00 $3,20 Minimum quantity https://www.tme.eu/ro/details/b3x10_bn3/suruburi-cu-piulita/bossard/1003771/
Steel Pins 2.5x10mm $4,60 1 $0,00 $4,60 50pcs https://www.aliexpress.com/item/1005003326358562.html
Steel Pins 4x30mm $5,04 1 $0,00 $5,04 20pcs https://www.aliexpress.com/item/1005003326358562.html
GT2 Timing Pulleys 5pcs $5,53 1 $2,99 $8,52 20T W6 B5 https://www.aliexpress.com/item/1005001933418605.html
GT2 Idler Timing Pulleys 12pcs $9,28 2 $2,99 $21,55 20T W6 B4 https://www.aliexpress.com/item/1005007557987612.html
Hall Sensors $0,41 65 $0,00 $26,65 https://www.tme.eu/ro/details/ss30at/senzori-hall/honeywell/
I2C I/O expander $1,66 1 $0,00 $1,66 https://www.tme.eu/ro/en/details/tca9555pwr/interfaces-others-integrated-circuits/texas-instruments/
I2C Driver $1,69 1 $0,00 $1,69 https://www.tme.eu/ro/en/details/tbd62083afwg/drivers-integrated-circuits/toshiba/
Resistor network $0,30 1 $0,00 $0,30 https://www.tme.eu/ro/en/details/4609x-101-103lf/resistor-networks/bourns/
Bus transciever $0,80 1 $0,00 $0,80 https://www.tme.eu/ro/en/details/sn74hct245dwr/latches/texas-instruments/
Resistors $0,03 5 $0,00 $0,13 https://www.tme.eu/ro/details/rc1206fr-072k7/rezistente-smd/yageo/rc1206fr-072k7l/
Inductors $0,41 4 $0,00 $1,64 https://www.tme.eu/ro/details/b82422h1103k000/inductoare/epcos-tdk/
Polarized Capacitors $0,70 4 $0,00 $2,80 https://www.tme.eu/ro/details/tajc107k010r/condensatoare-cu-tantal-smd/kyocera-avx/tajc107k010rnj/
Capacitors $0,17 3 $0,00 $0,51 https://www.tme.eu/ro/details/cl31b104kbcnnnd/condensatoare-mlcc-smd/samsung/
40 pin Connector Female $0,46 1 $0,00 $0,46 https://www.tme.eu/ro/details/zl262-40dg/pini-cu-benzi-si-soclu/connfly/ds1023-2-20s21/
40 pin Connector Male $4,51 1 $0,00 $4,51 https://www.tme.eu/ro/details/zl2038-40/pini-cu-benzi-si-soclu/ninigi/
7 pin Connector Female $0,08 10 $0,00 $0,81 Minimum quantity https://www.tme.eu/ro/details/zl262-7sg/pini-cu-benzi-si-soclu/connfly/ds1023-1-7s21/
4 pin Connector Female $0,08 10 $0,00 $0,78 Minimum quantity https://www.tme.eu/ro/details/zl262-4sg/pini-cu-benzi-si-soclu/connfly/ds1023-1-4s21/
3 pin Connector Male $0,17 1 $0,00 $0,17 https://www.tme.eu/ro/details/tsw-103-07-l-s/pini-cu-benzi-si-soclu/samtec/
PCBs $29,40 1 $22,59 $51,99
Total Cost $43,99 $205,78

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