2 layers215.9 × 203.2 mm
4 layers228.6 × 228.6 mm
Chess
NPontious/ChessPCBThe PCB design for a smart chess board
- Size
- 228.6 × 228.6 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 370
- Nets
- 239
- Pads
- 1,236
- Tracks, vias
- 3,882, 441
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Mar 2025
- Updated
- 10 Nov 2025
Overview
Chess is an open-source printed circuit board by NPontious, from the NPontious/ChessPCB repository on GitHub. It is a 4-layer board of 228.6 × 228.6 mm with 370 parts on 239 nets, routed with 3,882 tracks and 441 vias.
It is built around the SN74AHCT125QPWRQ1, A1324LLHLT-T and ADS1115IDGS, with the CD74HC4067M, TXB0108PW and TXS0104EPW among its other parts. Its parts include 176 capacitors, 112 diodes, 72 ICs, 4 resistors and 3 connectors.
Main components
6
SN74AHCT125QPWRQ1
TSSOP-14-40℃~+125℃ 1 20uA 4 4.5V~5.5V 7.5ns@5V,50pF 74AHCT 8mA 8mA Tri-State Unidirectional TSSOP-14 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
A1324LLHLT-T
SOT-23W-40℃~+150℃ 4.5V~5.5V 5mV/Gs 6.9mA ±0%/℃ ±1.5% SOT-23W Linear Hall Sensors ROHSAllegro MicroSystems, LLCHall Sensor
ADS1115IDGS
MSOP10Ultra-Small, Low-Power, 4 Channels 16-Bit Analog-to-Digital Converter with Internal ReferenceTexas InstrumentsUncategorised
CD74HC4067M
SOIC-24-300mil-55℃~+125℃ 16 160Ω 16:1 22ns 2V~6V 345ns 365ns 89MHz Bidirectional analog channel、Glitch-free switching SOIC-24-300mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
TXB0108PW
TSSOP-20-40℃~+85℃ 1 1.2V~3.6V 1.65V~5.5V 100Mbps 8 Automatic direction detection、Power-off protection、Output enable high-impedance Bidirectional Level translator Tri-State TSSOP-20 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level ShiftersTXS0104EPW
TSSOP-14-40℃~+85℃ 1 1.65V~3.6V 2.3V~5.5V 24Mbps 4 Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain TSSOP-14 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
Parts
370| Qty | Value | Footprint | References |
|---|---|---|---|
| 176 | C | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +160 |
| 112 | SK6812-EC3210F | Custom_Library:3210F Test | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +96 |
| 64 | A1324LLHLT-T | Custom_Library:SOT95P285X113-3N | IC1, IC2, IC10, IC11, IC12, IC13, IC14, IC15, IC16, IC17, IC18, IC19, IC20, IC21, IC22, IC23 +48 |
| 4 | 4.7kR | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4 |
| 4 | CD74HC4067M | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U9, U10, U11, U12 |
| 2 | Conn_02x10_Counter_Clockwise | Connector_PinSocket_2.54mm:PinSocket_2x10_P2.54mm_Vertical_SMD | J1, J2 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D4.0mm | VDD, VSS |
| 1 | ADS1115IDGS | Package_SO:TSSOP-10_3x3mm_P0.5mm | U2 |
| 1 | LOGO | LOGO | G*** |
| 1 | Raspberry_Pi_4 | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical_SMD | J5 |
| 1 | SN74AHCT125QPWRQ1 | Custom_Library:SOP65P640X120-14N | IC65 |
| 1 | TXB0108PW | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | TXS0104EPW | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U3 |
Questions
How big is the Chess PCB?
It measures 228.6 × 228.6 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Chess use?
370 parts, built around the SN74AHCT125QPWRQ1, A1324LLHLT-T, ADS1115IDGS and CD74HC4067M. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Chess KiCad files?
From the NPontious/ChessPCB repository on GitHub, at the commit this page was made from: the board is Chess.kicad_pcb and its schematic Chess.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chess design in my own project?
Its repository states no licence, so its author keeps all rights: ask NPontious before reusing the design.
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