2 layers139.7 × 73.7 mm
2 layers221.7 × 106.1 mm
26-30 key, column-staggered, unibody-split keyboard
- Size
- 221.7 × 106.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 14
- Pads
- 263
- Tracks, vias
- 540, 60
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Apr 2025
- Updated
- 18 Apr 2025
Overview
Iiwi is an open-source printed circuit board by grassfedreeve, from the grassfedreeve/iiwi repository on GitHub, published under the MIT licence. It is a 2-layer board of 221.7 × 106.1 mm with 40 parts on 14 nets, routed with 540 tracks and 60 vias.
Its parts include 30 switches, 1 IC and 1 diode. It belongs with the keyboards and input boards of this library.
README
README.md
i'iwi
30 to 26 key, column-staggered, unibody-split keyboard using mousebites to snap off excess keys on the pinkies and thumbs. Named after the i'iwi bird, (“ee-EE-vee”), consider donating to the Maui Forest Bird Recovery Project.
Heavy inspiration from the zilpzalp, ʻākohekohe, grumpy and fitis.
PCB
BOM
- 1 pcb
- 1 Seeed XIAO compatible controller
- 26-30 sod123 diodes
- 26-30 kailh choc low profile switches
- 26-30 keycaps
wireless parts (optional)
Firmware
ZMK is what I use and have setup a module for: i'iwi ZMK Module That being said the matrix is the same as a Hummingbird so you can use hummingbird firmware just fine on whichever firmware you enjoy.
Inspiration & Thanks
- perce for making the stunning artwork | madebyperce | kofi
- jcmkk3's rufous hummingbird variation. Of which I used the Ergogen config, routing, and footprints.
- apfel's zilpzalp keyboard
- PJE66's hummingbird keyboard
- Weteor's grumpy and fitis
- apsu's aptmak keyboard layout
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | SW_Push | trochilidae:ChocSimpleDiode | SW1, SW2, SW10, SW11, SW12, SW17, SW18, SW19, SW21, SW22, SW23, SW24, SW25, SW26, SW27, SW28 +7 |
| 5 | trochilidae:ChocSimpleDiode | S1, S14, S14, S14, S15 | |
| 3 | MountingHole_2.2mm_M2 | PAD1, PAD1, PAD1 | |
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | trochilidae:ChocSimpleDiode 1.5u | S27, S28 | |
| 1 | |||
| 1 | Battery_Cell | trochilidae:BatteryPadsReversible | BT1 |
| 1 | Val** | trochilidae:HeaderJumperSimple | D9 |
| 1 | xiao | Kleeb MCU:xiao-tht | U1 |
Questions
How big is the Iiwi PCB?
It measures 221.7 × 106.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Iiwi use?
40 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 Iiwi KiCad files?
From the grassfedreeve/iiwi repository on GitHub, at the commit this page was made from: the board is pcb/iiwi.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Iiwi 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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