4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers79.8 × 49.7 mm
2x3-macropad
BasementCircuits/2x3-macropad1Simple 2x3 macropad running QMK firmware
- Size
- 79.8 × 49.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 30
- Pads
- 140
- Tracks, vias
- 157, 2
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 23 Jul 2020
- Updated
- 5 Aug 2020
Overview
2x3-macropad is an open-source printed circuit board by BasementCircuits, from the BasementCircuits/2x3-macropad repository on GitHub, published under the MIT licence. It is a 2-layer board of 79.8 × 49.7 mm with 19 parts on 30 nets, routed with 157 tracks and 2 vias.
It is built around the WS2812B. Its parts include 9 switches, 8 diodes and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.md
2x3 Macropad
Extremely simple 2x3 macropad with sandwich case.
- QMK firmware
- Acrylic sandwich case
- Encoder support
Schematic
PCB
Case
Case plates for laser cutting. 0.15 mm kerf already accounted for in .dxf files.
Choose one of the three switch plates according to your encoder placement.
For same results as image above, engrave on 2 layer acrylic.
- 4x M3 20mm screws
- 4x M3 nuts
Software
Running on QMK firmware. Use QMK Toolbox to flash with provided HEX file. Then use VIA configurator to configure keybinds. For further customization (encoder keycodes), setup a QMK build environment and compile your own HEX files.
Flashing
- Download and open QMK Toolbox
- Select HEX file
- Choose ATMega32u4 as microcontroller
- Push reset button on board and then press flash button in toolbox.
Keybinds
- Download and install VIA Configurator
- Open VIA and go to File->Import Keymap
- Select the keymap.json file
- Plug in the macropad
BOM
| Component | Quantity | Link |
|---|---|---|
| MX switches | 6x (5x) | |
| 1N4148 diodes | 6x | |
| 5.2x5.2mm SMD pushbutton | 1x | Mouser |
| Arduino Pro Micro 5V 16 MHz | 1x | |
| WS2812B | 2x | |
| EC11 Encoder 15mm shaft | 1x |
WS2812B optional as undeglow is not the best on this board due to few LEDs and bad placement. Only 5 switches needed if also using encoder.
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | D_Small | Keebio-Parts:Diode-dual | D3, D4, D5, D6, D7, D8 |
| 6 | KEYSW | Keebio-Parts:MX_PCB_100H | K1, K2, K3, K4, K5, K6 |
| 2 | Rotary_Encoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW2, SW3 |
| 2 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2 |
| 1 | LOGO | prints:dq_logo_14x14mm | G*** |
| 1 | ProMicro | Keebio-Parts:ArduinoProMicro | U1 |
| 1 | SW_PUSH | Button_Switch_SMD:SW_SPST_SKQG_WithoutStem | SW1 |
Questions
How big is the 2x3-macropad PCB?
It measures 79.8 × 49.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 2x3-macropad use?
19 parts, built around the WS2812B. 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 2x3-macropad KiCad files?
From the BasementCircuits/2x3-macropad repository on GitHub, at the commit this page was made from: the board is Hardware/PCB/2x3_macropad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 2x3-macropad design in my own project?
Its repository publishes it under the MIT 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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