4 layers
IONPAK2
m-labs/ionpak
A modern, low-cost universal controller for hot-cathode ionization vacuum gauges. (WIP)
259 parts23
2 layers64.9 × 63.5 mm
Motherboard
CuriousAvenger/PhantomGambit1Phantom Gambit: Where Chess Comes to Life. The Phantom Gambit is a smart chessboard that can move pieces on its own, letting you play chess hands-free.
- Size
- 64.9 × 63.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 158
- Pads
- 489
- Tracks, vias
- 858, 133
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 23 Oct 2024
- Updated
- 29 Sep 2025
Overview
Motherboard is an open-source printed circuit board by CuriousAvenger, from the CuriousAvenger/PhantomGambit repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 64.9 × 63.5 mm with 75 parts on 158 nets, routed with 858 tracks and 133 vias.
It is built around the ESP32-S2-SOLO-N8, TMC2209-LA and DMN3404L. Its parts include 24 capacitors, 13 connectors, 11 resistors, 9 ICs and 5 diodes. It belongs with the computers and single-board computers boards and the ESP32 boards of this library.
Main components
3README
README.mdPhantomGambit
The Phantom Gambit is a smart chessboard that can move pieces on its own, letting you play chess hands-free. Using hidden magnets and a tiny computer, it smoothly glides pieces across the board as if by magic. Whether you're playing against a friend or an AI, the board brings a unique, almost lifelike experience to the game—it's like having an invisible opponent right there with you.
BOM
https://docs.google.com/spreadsheets/d/1c5iFp7m9ee2j3huvuUchwQKQikQjN13B6d_CP39HWaw/edit?usp=sharing
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C10, C11, C13, C14, C20, C21, C22, C23, C24 |
| 8 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J6, J7, J8, J9, J10, J11, J12, J13 |
| 5 | 1N5819 | Diode_THT:D_DO-41_SOD81_P5.08mm_Vertical_AnodeUp | D1, D2, D3, D4, D5 |
| 4 | .1 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R7, R8, R9 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R5, R10, R11 |
| 4 | TCA9535RTWR | Package_DFN_QFN:WQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm | U3, U4, U5, U6 |
| 3 | .1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C4, C5 |
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C12, C18 |
| 2 | 2.2uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C19 |
| 2 | 22nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16, C17 |
| 2 | 5.1 k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R3 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2, J5 |
| 2 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3, J4 |
| 2 | TMC2209-LA | Package_DFN_QFN:TQFN-28-1EP_5x5mm_P0.5mm_EP3.25x3.25mm_ThermalVias | U7, U8 |
| 1 | 100uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C7 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 12VConverter_TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP2 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 3.3VConverter_TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP3 |
| 1 | 330 uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C8 |
| 1 | 330uH | Inductor_SMD:L_1008_2520Metric_Pad1.43x2.20mm_HandSolder | L1 |
| 1 | 50 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | Boot | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW2 |
| 1 | DMN3404L | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ESP32-S2-SOLO | Espressif:ESP32-S2-SOLO | U1 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LM2575-5.0BT | Package_TO_SOT_THT:TO-220-5_Vertical | U9 |
| 1 | Polyfuse | Fuse:Fuse_2920_7451Metric_Pad2.10x5.45mm_HandSolder | F1 |
| 1 | PowerSupply_TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | Reset | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | TMC_Input1_TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP4 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
The 71 most common of 75 parts.
Questions
How big is the Motherboard PCB?
It measures 64.9 × 63.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Motherboard use?
75 parts, built around the ESP32-S2-SOLO-N8, TMC2209-LA and DMN3404L. 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 Motherboard KiCad files?
From the CuriousAvenger/PhantomGambit repository on GitHub, at the commit this page was made from: the board is kicad/Motherboard/Motherboard.kicad_pcb and its schematic kicad/Motherboard/Motherboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Motherboard 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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