4 layers149 × 95 mm
2 layers55 × 36 mm
Chessboard
MX682X/chess_controller- Size
- 55 × 36 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 90
- Pads
- 192
- Tracks, vias
- 399, 139
- Pours
- 34
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Oct 2024
- Updated
- 4 Aug 2025
Overview
Chessboard is an open-source printed circuit board by MX682X, from the MX682X/chess_controller repository on GitHub. It is a 2-layer board of 55 × 36 mm with 47 parts on 90 nets, routed with 399 tracks and 139 vias.
It is built around the AO3400A. Its parts include 23 resistors, 8 transistors, 7 capacitors, 3 inductors and 2 connectors.
Main components
1Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 300 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R11, R12, R13, R14, R15, R16, R17, R18, R21, R22, R23, R24, R25, R26 +7 |
| 8 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 4 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C6, C7 |
| 3 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1, RX1, TX1 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2 |
| 1 | AVR128DB64x-xPT | Package_QFP:TQFP-64_10x10mm_P0.5mm | U1 |
| 1 | Conn_01x06 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J2 |
| 1 | Conn_02x13_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Vertical | J1 |
| 1 | SW_Omron_B3FS | Button_Switch_SMD:SW_SPST_Omron_B3FS-100xP | RST |
Questions
How big is the Chessboard PCB?
It measures 55 × 36 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Chessboard use?
47 parts, built around the AO3400A. 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 Chessboard KiCad files?
From the MX682X/chess_controller repository on GitHub, at the commit this page was made from: the board is avr/kicad/chessboard/chessboard.kicad_pcb and its schematic avr/kicad/chessboard/chessboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chessboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask MX682X before reusing the design.
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