2 layers142.5 × 106.3 mm
2 layers281.4 × 112.9 mm
Butterfly
aaatipamula/butterflyA keyboard inspired by the corne
- Size
- 281.4 × 112.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 88
- Nets
- 66
- Pads
- 488
- Tracks, vias
- 583, 0
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 May 2023
- Updated
- 9 Jul 2023
Overview
Butterfly is an open-source printed circuit board by aaatipamula, from the aaatipamula/butterfly repository on GitHub. It is a 2-layer board of 281.4 × 112.9 mm with 88 parts on 66 nets, routed with 583 tracks and 0 vias.
Its parts include 42 diodes, 1 IC and 1 switch. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
README
README.mdThe Butterfly Keyboard
Origin
I started this project for a few reasons:
- I've wanted to try designing my own pcb
- I like the layout of the corne keyboard
- I wanted a lightweight and relatively small keyboard to bring around with me
Design
As mentioned before I took a lot of inspiration from the very popular corne designed by foostan. Most of the layout was taken directly from the corne, however, a few key changes were made to fit my constraints. They are as follows:
- The board is a singular piece which allows for the use of one microcontroller
- Each "half" of the board is angled in at 13 degrees for a more comfortable typing position
- The switch footprints are a solder-only mx/choc hybrid (taken from foostan's keyboard library)
The intended use I had for this board was to simply use the pcb as the entire board. I wanted to keep the board as thin and small as possible. A foam pad should cover the bottom of the board to protect it from damage.
The name came about as I was outlining the pcb for the board. The shape heavily reminded me of a butterfly and I decided to name the board as such!
Pictures
PCB Design
3D Render of the Front
3D Render of the Back
Parts
88| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | D_Small | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +26 |
| 40 | MX-NoLED | kbd:CherryMX_Choc_1u | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +24 |
| 2 | MX-NoLED | kbd:CherryMX_Choc_1.5u | MX39, MX40 |
| 1 | LOGO | kbd:corne-logo-horizontal | G*** |
| 1 | ProMicro_r | kbd:ProMicro_v3 | U1 |
| 1 | SW_PUSH | kbd:ResetSW | SW1 |
| 1 | X | Graphics:butterfly_small | Butterfly |
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Questions
How big is the Butterfly PCB?
It measures 281.4 × 112.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Butterfly use?
88 parts. 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 Butterfly KiCad files?
From the aaatipamula/butterfly repository on GitHub, at the commit this page was made from: the board is Butterfly.kicad_pcb and its schematic Butterfly.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Butterfly design in my own project?
Its repository states no licence, so its author keeps all rights: ask aaatipamula before reusing the design.