2 layers101.8 × 57.8 mm
Sc64v2
Polprzewodnikowy/SummerCart64
SummerCart64 - a fully open source N64 flashcart
96 parts1.2kGPL-3.0
2 layers221.6 × 89.5 mm
Smallwave
RosenNX6/smallwave934 key wireless split keyboard utilizing ZMK, nice!nano, and nice!view.
- Size
- 221.6 × 89.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 96
- Nets
- 82
- Pads
- 560
- Tracks, vias
- 460, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 5 Nov 2023
- Updated
- 25 Nov 2023
Overview
Smallwave is an open-source printed circuit board by RosenNX6, from the RosenNX6/smallwave repository on GitHub, published under the MIT licence. It is a 2-layer board of 221.6 × 89.5 mm with 96 parts on 82 nets, routed with 460 tracks and 39 vias.
Its parts include 34 diodes, 34 switches, 2 ICs and 2 connectors. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.mdsmallwave
The smallwave is a 34 key wireless split keyboard with a e-paper style display. This design ultimately comes from the popular Sweep layout but was built by modifying the Urchin design and inspired by many aspects of the Flipper and Corne layout.
Hardware List
Required Parts
- 1× smallwave PCB (files can be found in the gerbers folder)
- 2× nice!nano
- 2× Lipo battery
- 48× Mill-max machined pins
- 2× Pair of female headers
- 34× Kailh choc hotswap sockets
- 34× Kailh choc v1 switches
- 34× Keycaps
- 34× SMD diodes
Optional Parts
- 2x nice!view
- 12x Vinyl self adhesive pads
- 2x Magnetic type C cable
- 1x Dual port USB wall charger
Itemized Parts Receipt (v1.0 build)
| Quantity | Item | Source | Cost |
|---|---|---|---|
| 2 | nice!nano | typeractive.xyz | $50.00 |
| 2 | nice!view | typeractive.xyz | $40.00 |
| 40 | SMD Diode | typeractive.xyz | $3.00 |
| 40 | Kailh Hotswap Sockets | typeractive.xyz | $6.00 |
| 40 | Kailh Low Profile Choc Switches (Pro Red) | typeractive.xyz | $28.00 |
| 4 | MBK Choc Keycaps (1u convex) | typeractive.xyz | $2.00 |
| 2 | MBK Choc Keycaps (1u homing) | typeractive.xyz | $1.00 |
| 30 | MBK Choc Keycaps (1u) | typeractive.xyz | $10.50 |
| 4 | Machine Sockets and Pins | typeractive.xyz | $13.00 |
| 2 | Reset Button | typeractive.xyz | $1.50 |
| 2 | Battery Jack (black) | typeractive.xyz | $2.00 |
| 2 | Power Switch | typeractive.zyz | $1.50 |
| 2 | Lithium Battery 110mAh (BLK PH 2.0mm) | typeractive.xyz | $8.00 |
| 5 | smallwave PCB | jlcpcb.com | $38.93 |
| 16 | Vinyl Self Adhesive Pads (round 3/8") | Ace Hardware | $4.99 |
| 2 | Magnetic Type C Cable | amazon.com | $14.99 |
| 1 | Anker PowerPort Mini Dual Port USB Wall Charger | amazon.com | $6.99 |
Design Software
KiCad
PCB design, part locations, copper traces, and pads. This was a steep learning curve for me but the software was incredible once I got the hang of it.
AutoCAD
PCB shape (edge cuts). This can be done in KiCad but I am inexperienced with the software and felt much more comfortable drawing prototype shapes in a software I am more familiar with.
Inkscape
Used for making the PCB art through the use of SVG files.
Github
Used for programming the keyboard in the ZMK language directly in the web browser. How cool is that? More on this below.
Firmware
The smallwave utilizes the ZMK programming language. To view, download, or edit the zmk programming used for this project, visit the zmk-config-smallwave repository.
Inspiration/Credits
This build was inspired by the Ferris Sweep, Ben Vallack's Flipper, and Duccio's Urchin. I started this project with zero knowledge of keyboards, PCBs, or programming but, along with browsing r/ErgoMechKeyboards the videos below were very helpful for me in getting started.
- You Won't Beleive How Effective This Keyboard Layout Is
- A Tiny, Ultra-Affordable Keyboard You Can Build Yourself!
- How to make a SWEEP KEYBOARD (beginner friendly!)
- URCHIN Ergonomic Keyboard Build
- PCB Art - A Step By Step Tutorial
- Beginner ZMK Tutorial - How to make and modify your ZMK keymap
- How to Set Up ZMK Firmware From Scratch
Parts
96| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | Kailh-Choc | urchin-footprints:SW_Hotswap_Kailh_Choc_V1_tweaked | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +18 |
| 34 | diode | urchin-footprints:SMD_Diode_Tiny | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +18 |
| 10 | M2 Hole | swoop:M2_hole_4.2mm | H1, H1, H2, H2, H3, H3, H4, H4, H4, H4 |
| 2 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1, J2 |
| 2 | G*** | kibuzzard-636588C8 | kibuzzard-636588C8, kibuzzard-636588C8 |
| 2 | SW_Push | Button_Switch_SMD:Panasonic_EVQPUJ_EVQPUA | RSW0, RSW1 |
| 2 | SW_SPDT | urchin-footprints:smt-slider-switch | SW_POWER0, SW_POWER1 |
| 2 | VAL** | urchin-footprints:mouse-bite-5mm-slot-with-space-for-track | mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 2 | nice!view | urchin-footprints:nice_view | Display1, Display2 |
| 2 | nice_nano | urchin-footprints:nice_nano | U1, U2 |
| 1 | G*** | kibuzzard-6365884B | kibuzzard-6365884B |
| 1 | G*** | kibuzzard-636592CC | kibuzzard-636592CC |
| 1 | G*** | kibuzzard-63658865 | kibuzzard-63658865 |
| 1 | G*** | kibuzzard-63659296 | kibuzzard-63659296 |
Questions
How big is the Smallwave PCB?
It measures 221.6 × 89.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Smallwave use?
96 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 Smallwave KiCad files?
From the RosenNX6/smallwave repository on GitHub, at the commit this page was made from: the board is main.kicad_pcb and its schematic main.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smallwave 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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