2 layers176 × 189.6 mm
8x8
miliar/saiboard
An open-source, wooden electronic Go board that integrates with KataGo.
222 parts48GPL-3.0
2 layers66 × 189.6 mm
An open-source, wooden electronic Go board that integrates with KataGo.
- Size
- 66 × 189.6 mm
- Copper layers
- 2
- Thickness
- 0.58 mm
- Parts
- 117
- Nets
- 68
- Pads
- 332
- Tracks, vias
- 766, 148
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Mar 2022
- Updated
- 8 Mar 2025
Overview
8x3 is an open-source printed circuit board by miliar, from the miliar/saiboard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 66 × 189.6 mm with 117 parts on 68 nets, routed with 766 tracks and 148 vias.
It is built around the AH49E, SK6812 and 74HCT138D, with the AMS1117-3.3 among its other parts. Its parts include 27 capacitors, 24 ICs, 24 diodes, 19 connectors and 8 resistors. It belongs with the robots and motor control boards and the ESP32 boards of this library.
Main components
4
AH49E
TO-92S-25℃~+85℃ 4.5V~5.5V 5mA 6mA TO-92S Hall Switches ROHSNanjing AH Elec S & THall Sensor
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
74HCT138D
SO-16-40℃~+125℃ 160uA 20ns@4.5V,50pF 3/8 4.5V~5.5V 4mA 4mA 74HCT Decoder Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSNexperiaSignal Switches / Encoders & Decoders / Multiplexers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdSaiboard
Saiboard is an open-source Go board that combines tradition with technology.
Experience the thrill of Go on a real board, enhanced by AI guidance and analysis tools.
Play against AI, review your games with AI assistance, and elevate your Go skills to new heights.
https://github.com/miliar/saiboard/assets/35922697/eb32aec5-f142-464d-a071-56e9dbfe0f72
Features:
- Wooden Go board for authentic gameplay
- Sensory electronics for accurate move detection and LED feedback
- Heavy, magnetic Go stones for a stable and engaging experience
- Software with integrated AI system KataGo for expert insights and game recommendations
- User-friendly web app for effortless control and interaction
App
Board
Next moves
Top moves
Ownership
Parts
117| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | C104 | Capacitor_SMD:C_1206_3216Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +11 |
| 24 | AH49E | Package_TO_SOT_SMD:SOT-23 | U1, U2, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21, U22, U23 +8 |
| 24 | SK6812 | LED_SMD:LED_SK6812_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +8 |
| 8 | 2N3906 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 8 | R | Resistor_SMD:R_1206_3216Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 4 | PQ_side_a | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J2, J3, J5, J6 |
| 4 | PQ_side_b | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J8, J9, J11, J12 |
| 3 | MountingHole_3mm | MountingHole:MountingHole_3mm | M1, M2, M3 |
| 2 | C106 | Capacitor_SMD:C_1206_3216Metric | CI2, CI4 |
| 2 | IC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J14, J15 |
| 1 | 74HCT138 | Package_SO:SO-16_5.3x10.2mm_P1.27mm | UI1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223 | UI2 |
| 1 | Conn_side_a | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal_SMD | J13 |
| 1 | Conn_side_b | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J19 |
| 1 | Hall | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal_SMD | J16 |
| 1 | Led | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal_SMD | J18 |
| 1 | LedIn_side_a | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal_SMD | J1 |
| 1 | LedIn_side_b | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal_SMD | J7 |
| 1 | Touch | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J17 |
| 1 | Touch_side_a | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J4 |
| 1 | Touch_side_b | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal_SMD | J10 |
Questions
How big is the 8x3 PCB?
It measures 66 × 189.6 mm and has 2 copper layers, 0.58 mm thick.
What parts does the 8x3 use?
117 parts, built around the AH49E, SK6812, 74HCT138D and AMS1117-3.3. 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 8x3 KiCad files?
From the miliar/saiboard repository on GitHub, at the commit this page was made from: the board is electronics/kicad_files/8x3/8x3.kicad_pcb and its schematic electronics/kicad_files/11x3/11x3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 8x3 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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