2 layers96 × 77 mm
2 layers136 × 91.7 mm
Ergonaut One is an open-source ergonomic wireless split mechanical keyboard designed by Ergonaut Keyboards.
- Size
- 136 × 91.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 39
- Pads
- 338
- Tracks, vias
- 602, 171
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Jun 2023
- Updated
- 29 Jan 2024
Overview
One is an open-source printed circuit board by ergonautkb, from the ergonautkb/one repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 136 × 91.7 mm with 56 parts on 39 nets, routed with 602 tracks and 171 vias.
It is built around the XIAO NRF52840. Its parts include 21 diodes, 21 switches, 2 connectors and 1 IC. It belongs with the keyboards and input boards and the nRF52 and nRF5x and SAM D and SAM boards of this library.
Main components
1README
README.mdErgonaut One
Ergonaut One in Modern Case
Ergonaut One is an open-source ergonomic wireless split mechanical keyboard designed by Ergonaut Keyboards.
Inspiration for the keyboard was taken from these projects:
- Corne by foostan
- Dao by yumagulovrn
Idea
We wanted to create a pretty affordable, nice looking, and, most importantly, very DIY-friendly ergonomic wireless split keyboard with Gateron Low Profile switches.
Photos
Gallery can be found on imgur.
Features
- Low-profile, which will reduce strain on your beautiful hands;
- Split. You can put the keyboard where it'll be comfortable exactly for you;
- Pretty long battery life. 250mAh battery gives up to a month of usage without charging;
- Wide availability and range of compatible keycaps;
- Easily replaceable switches thanks to hot-swap sockets;
- Budget-friendly, because:
- It uses relatively cheap and widely available Seeed Studio XIAO nRF52840 as MCU;
- It uses one PCB design for both halves of the keyboard;
- Everything except PCB's, components and hardware (screws, nuts) can be 3D printed.
- Beginner-friendly, because:
- PCB is easy to solder;
- Cases are easy to print.
- Wireless by design - no unnecessary wires, no unused connectors on the board;
- Free in terms of hardware design. It's licensed under permissive CERN-OHL-P v2 license, which means:
- you are free to manufacture it yourself;
- you are free to sell your manufactured hardware for profit.
Build Guide
BOM and Build Guide can be found in Ergonaut Keyboards Documentation Portal.
Firmware
Firmware can be found in one-zmk-config repository.
Gerbers
| Front | Back |
|---|---|
 |  |
Community projects
Accessories
Contacts
- Documentation portal: https://ergonautkb.com
- Telegram: https://ergonautkb.t.me
- Telegram (ru): https://ergonautkb_ru.t.me
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | D_Small | one:Diode_TH_SMD_DUAL | D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +5 |
| 21 | SW_SPST | one:KS-27_KS-33_Hotswap_1U_DUAL | SW1, SW2, SW3, SW4, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21 +5 |
| 4 | MountingHole | one:Hole_4.2mm | H1, H2, H3, H4 |
| 3 | StandoffHole | one:Hole_2.2mm | H6, H7, H8 |
| 2 | LOGO | one:OSHW-logo | G***, G*** |
| 1 | BATT | one:JST_SH_Battery_DUAL | J2 |
| 1 | BATT | one:Battery | J1 |
| 1 | LOGO | one:en_logo | G*** |
| 1 | SW_SPDT | one:MSK-12C02_DUAL | PWR1 |
| 1 | XIAO_nRF52840 | one:XIAO_nRF52840_DUAL | U1 |
Questions
How big is the One PCB?
It measures 136 × 91.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the One use?
56 parts, built around the XIAO NRF52840. 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 One KiCad files?
From the ergonautkb/one repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic cases/fr4/bottom/bottom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the One design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 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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