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Ajakovski·Chess-Master-Board·Hardware/KiCad/Schematic-PCB/Master Chess Board/StockfishChess.kicad_pcb

Main PCB layout, top view — open source ESP32 board by Ajakovski
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About the Main PCB

Main is an open source ESP32 PCB design by Ajakovski, published on GitHub under the MIT license. It is a 4-layer board measuring 100 × 120 mm, with 30 components from 19 distinct parts.

Its main chip is the ESP32-S3-WROOM-2, from the ESP32 family. Other key parts include the BQ24074RGT, TPS61023DRLT, AP2112K-3.3TRG1, SN74AHCT125D and USBLC6-2P6. By type, the board carries 8 ICs and 3 connectors.

It belongs with the iot & wireless and power & battery designs in this gallery.

From the project

A chess board that sees every piece, lights every move, and thinks alongside you

With the power of electro-magnetism this master board is capable of reading every move that the players are making. The powerfull chip with the built in machine gives us the power of a ~2000 ELO player that computes the best moves within 2 seconds and finally the built in RGB LED matrix sends light signals towards the player with the best move suggestions for you to beat every opponent.

Main, from the project README
From the project README

Main components on the Main

ESP32-S3-WROOM-2BQ24074RGTTPS61023DRLTAP2112K-3.3TRG1SN74AHCT125DUSBLC6-2P6RUEF300

Main bill of materials (BOM)

30 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-2
U1
1
BQ24074RGT
U3
1
TPS61023DRLT
U4
1
AP2112K-3.3TRG1
U5
1
SN74AHCT125D
U143
1
USBLC6-2P6
U144
2
RUEF300
U145, U146
2
ZF1-15-02-X-WT-X
J1, J4
1
USB4110GFA
J2
7
R_0402_1005Metric
1.2, 5.1Kohm, 10K, 33, 100Kohm, 330, 800
2
C_0603_1608Metric
1uF, 100nF
1
XEL4030-102MEC
1uH1
2
C_0805_2012Metric
4.7uF, 10uF
1
R_0201_0603Metric
10Kohm
1
C_1206_3216Metric
22uF
2
C_0402_1005Metric
33Ohm, 100
1
R_0603_1608Metric
100K
1
CP_EIA-7343-20_Kemet-V_HandSolder
100uF
1
R_0805_2012Metric
750K

Main design files

The KiCad project lives in the Ajakovski/Chess-Master-Board repository on GitHub; these links point at the commit this page was built from.

Main: common questions

What microcontroller does the Main use?

The Main is built around the ESP32-S3-WROOM-2, from the ESP32 family.

How big is the Main PCB?

The Main measures 100 × 120 mm, has 4 copper layers and is 1.455 mm thick.

How many components are on the Main?

30 components, from 19 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 Main design files?

From the Ajakovski/Chess-Master-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 Main design in my own project?

Yes, under the terms of its MIT license, which Ajakovski chose for the repository.

Can I test firmware for the Main without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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