2 layers290.1 × 130 mm
4 layers167 × 122.8 mm
Duo board
Gex-devs/duo_board2Custom split-keyboard
- Size
- 167 × 122.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 90
- Pads
- 290
- Tracks, vias
- 449, 36
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 10 Oct 2024
- Updated
- 29 Nov 2024
Overview
Duo board is an open-source printed circuit board by Gex-devs, from the Gex-devs/duo_board repository on GitHub. It is a 4-layer board of 167 × 122.8 mm with 71 parts on 90 nets, routed with 449 tracks and 36 vias.
It is built around the AMS1117-3.3. Its parts include 24 diodes, 12 capacitors, 3 ICs, 3 connectors and 2 resistors. It belongs with the keyboards and input boards and the STM32 boards of this library.
Main components
1README
README.mdduo_board
Custom Split keyboard with PS4 joystic as a mousepad.
- Left Side Only So far
- Firmware:= QMK
PCB Board View
Keymap View schema
Main View schema
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 1N4007 | Diode_SMD:D_SMA | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +7 |
| 22 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1u | MX1, MX2, MX3, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22 +6 |
| 5 | 100nF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2, C3, C4, C8 |
| 2 | 1K5 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C9, C10 |
| 2 | 22uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C11, C12 |
| 1 | 10nF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C6 |
| 1 | 10uF | Capacitor_THT:CP_Radial_Tantal_D5.5mm_P2.50mm | C5 |
| 1 | 16Mhz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 1uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C7 |
| 1 | 2171790001 | myCustomLibs:MOLEX_2171790001 | J2 |
| 1 | 3V TP | TestPoint:TestPoint_Pad_1.0x1.0mm | TP2 |
| 1 | 5v TP | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | Conn_01x04_Pin | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J3 |
| 1 | GND TP | TestPoint:TestPoint_Pad_1.0x1.0mm | TP3 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D24 |
| 1 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1.75u | MX23 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | TRRS | footprints:PJ-342B-TX-SMT_XKB | J1 |
| 1 | ~ | myCustomLibs:PS4_joystick | U2 |
Questions
How big is the Duo board PCB?
It measures 167 × 122.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Duo board use?
71 parts, built around the 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 Duo board KiCad files?
From the Gex-devs/duo_board repository on GitHub, at the commit this page was made from: the board is duo_board.kicad_pcb and its schematic duo_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Duo board design in my own project?
Its repository states no licence, so its author keeps all rights: ask Gex-devs before reusing the design.
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