SplitKBD
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Open-source split mechanical keyboards

Russian ErgoMech Community: https://t.me/klavaorgwork
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0xCB-Helios by 0xCB-dev

The 0xCB Helios is an Elite-C compatible MicroController that is based on the RP2040

Helios has 16MB(128Mbit) of flash, Dual ARM Cortex-M0 @ 133MHz, and 264kB SRAM. It features a default off red power LED, a blue user LED, and a level-shifter to drive 5V components. Helios has an ESD protection chip onboard, supports VBUS detection for split keyboards, and you can select VBUS instead of raw for the 5V pin to hook up an external USB port with the included D+ and D- pads while maintaining ESD protection. Another huge advantage is the single button reset circuit which enables you to reset the board with a short click and enter the bootloader with a long (>500ms) click. This backwards compatiblility also enables you to use reset buttons on existing keyboards for both functions. The bootloader is unbrickable as its located in ROM on the rp2040 itself.

#mcu
NINE by bsag (but she's a girl)

The Nine is a tiny 18-key split, wireless, ergonomic split keyboard, heavily inspired by Ben Vallack's Piano 2. I tried out his design and loved it, but wanted to tweak the physical layout a bit to fit my hands and my use case better. It uses Nice!Nano V2 BLE-equipped controllers, and (optionally) Nice!View displays to show information like the connected BLE profile, battery level and layer name. You can read more about this keyboard and the design decisions I made here: Introducing the Nine keyboard and Nine keyboard Part 2 - the case.

#choc • #nrfmicro • #ble • #zmk • #display • #niceview • #diodeless • #18key
0xB2 - splinky by plut0nium

Pro-Micro/Elite-C replacement with USB-C and RP2040.
Designed for use in custom mechanical (split) keyboards, but many other uses are possible.

Features
* Pro-micro / Sparkfun RP2040 compatible footprint, with 5 extra pins at bottom (Elite-C style)
* Raspberry Pi RP2040 MCU
* Up to 16MB flash memory (depending on component selection and availability)
* User LED & USB VBUS detect
* Low profile USB-C mid-mount connector
* Designed to be manufactured and assembled by all common PCBA services (including JLCPCB)

#mcu
Alvaro v1.5 by Ariamelon

Pro Micro-compatible 32u4 Breakout Board. This board is a heavily-modified Goldfish Rev. C. While the schematic, basic layout, pinout (of course) etc is essentially the same, it uses 0603 components instead of 0402 and has some other changes.

Features
* Mid-mount USB-C connector using a low-profile USB C 2.0 connector.
* Pin-compatible with the original Pro Micro.
* 5 extra pins on the bottom like the Elite-C and Goldfish.
* Exposed USB data lines on 2.54mm grid.
* Easier to solder than the Goldfish.
* Has fuse unlike Goldfish.
* On-board power LED.
* Fully hand-solderable.

#mcu
Wizza by AlaaSaadAbdo

30 keys board with a couple of extra features

Features
* 30 keys
* Dual Trackball
* Per Key RGB
* Underglow
* Tenting puck support
* Haptic feedback
* Dedicated mouse buttons (kailh silent mouse buttons)
* 5 way switch
* TFT/LCD screen on both sides
* MCU RP2040 with elite-c footprint (5 extra pins at the bottom)

Gallery

#choc • #mx • #promicro • #rp2040 • #qmk • #display • #haptic • #rgb • #trackball • #30key
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Scylla by Bastardkb

A modern low-profile ergonomic split keyboard, with a number row and a feature-full thumb cluster.

Features
* Split compact ergonomic keyboard
* Keywell and column-staggered
* Same layout as a dactyl manuform Mini
* Per-key RGB (optional)
* Low profile
* Comes with QMK and online configurator
* Tenting base, 30 degrees (optional)
* Anti-slip pads

#mx • #promicro • #qmk • #rgb • #3d • #58key
🔥1
Cheapino by tompi

Probably one of the cheapest split keyboards you can build.
This is the result of really enjoying building keyboards, but not wanting to spend that much money on it. The pcb is reversible, connected using rj45, and utilizes a japanese duplex matrix, so only one mcu is needed (in fact it only uses 7 of the rj45 wires to support 18 switches and an encoder on the right side).

Build guide

#mx • #rp2040 • #qmk • #encoder • #36key
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VFK-001 by v0Ch

Valkyrie folded keyboard (folded vertical dactyl on full size mx silent switches) with removable stabilizer

#mx • #promicro • #qmk • #handwired • #trackball • #3d • #36key
❤‍🔥1👍1🥱1
Lofree & Kalih Announces Shadow: World's First Series of Full POM Material Low-Profile Switches

#news
How to make the ergonomic Trackpoint keyboard with P60-03b

#design
❤‍🔥1
Frame-48 by gregsqueeb

A handwired keyboard build created to use the WorkLouder keycaps and inspired by the Void Ergo S! Runs QMK firmware and fully customizable with VIA configurator.

The Frame 48 is a 3d printed, handwired, split keyboard that was inspired by the VOID ergo S, running QMK Firmware on Adafruit KB2040 controllers. Connection between the two halves of the keyboard is made with an aux cable via serial.

#choc • #kb2040 • #qmk • #encoder • #handwired • #48key
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VOID Ergo S by victorlucachi

The VOID Ergo S is a 3d printed, handwired, split keyboard with a layout similar to the Iris/Corne/Kyria, running QMK Firmware on Pro Micro controllers. Connection between the two halves of the keyboard is made with an aux cable via serial.

Renders

#mx • #promicro • #qmk • #encoder • #handwired • #46key
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Brain by Wesztman

A 40 key ZMK keyboard, nice!view, nice!nano & hotswap supported, based on urchin by duckyb.

Features
* 40 keys
* Only wireless with nice!nanos
* Nice!view support
* Power switch
* 3 Thumb buttons
* 3D printed case files
* Cute brain logo

#choc • #nrfmicro • #zmk • #ble • #display • #niceview • #40key
🥰1
Tako by ssbb

Tako is a vertical stagger split keyboard with electrostatic capacitive (EC) non-contact switches.

#ec • #qmk • #display • #oled • #34key
Ferris by Pierre Chevalier

A low profile split keyboard designed to satisfy one single use case elegantly.
Ferris is a collection of minimalistic keyboards that each focus on delivering a small set of features (mostly, typing) well.

Goals
- Comfort
- Aesthetics
- Portability
- Ease of assembly
- Low-Cost
- Low-Profile
- 34 keys
- Hackable
- USB-C
- No compromise
Design philosophy

#choc • #mx • #qmk • #zmk • #rgb • #34key
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Sweep by David Barr

Sweep is a version of the more fabulous Ferris by Pierre Chevalier that uses a daughter board like a promicro, elite-c, bit-c, nice!nano etc. instead of using onboard components.

Photo source

#alps • #choc • #chocmini • #mx • #promicro • #nrfmicro • #qmk • #zmk • #34key
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Swoop by jimmerricks

A WIP fork of David Barr's Sweep, which is itself based on the fabulous Ferris by Pierre Chevalier.

Features
- Cherry MX style switches
- Hotswap support
- Per-key RGB LEDs (mini-e)
- Up to 2 encoders
- Oled screens
- Power switch for battery management
- Bluetooth support w/ nice!nano
- Plate style case with mcu cover

#mx • #promicro • #nrfmicro • #qmk • #zmk • #ble • #display • #oled • #encoder • #rgb • #34key • #36key
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Frood by piit79

The Frood is a high-performance and affordable Pro Micro drop-in replacement based on a Raspberry Pi RP2040. It is physically and electrically compatible with Elite-C/nice!nano as much as possible.

Features
* Powerful dual-core Raspberry Pi RP2040 MCU
* 2 MB on-board QSPI flash memory
* Only 3.2 mm thick thanks to a mid-mounted USB-C socket
* 500 mA linear regulator and resettable fuse
* Combined Pro Micro / Elite-C / nice!nano / SparkFun Pro Micro RP2040 compatible pinout
* 5 more I/O pins (GPIO12-GPIO16) added along the bottom edge
* 23 available digital pins for a maximum of 11x12 = 132 switches
* 4 pins configurable as analogue inputs
* USB D+/D- broken out for use with an external USB socket/daughterboard
* USB power sensing on GPIO19 for split keyboard side detection
* UF2 bootloader for drag & drop programming with no extra software required
* Orange indicator LED on pin GPIO17

#mcu
Corne v4 prototype

#news
Trackball and mousekey add-on for Skeletyl

#design