Keyboards

Steven Karrmann Janus

A 34-key split ortholinear DIY keyboard by Steven Karrmann, using a reversible PCB that doubles as the bottom plate.

Key specs auto-matched against source pages · Last verified: 2026-10-18

Steven Karrmann Janus
Image: © Steven Karrmann (Manufacturer image)
Key layout
Image: QMK Firmware (Generated from QMK data (GPL-2.0))
—

Where to buy

No US retailer found yet. Official site

This page contains affiliate links. We may earn a commission at no cost to you.

Pros

  • One PCB serves as both logic board and bottom plate, so a 5-piece order builds a keyboard cheaply
  • Open source (MIT license) with KMK firmware
  • Compact build around Seeed XIAO RP2040

Cons

  • No hotswap; switches must be soldered
  • Supports only Cherry MX style switches
  • No RGB, OLED or knobs
  • Halves are linked by an ethernet cable

Specs

SplitSplit
StaggerOrtholinear
TentingNone
KeywellNo
Thumb clusterNo
Keys34
LayoutsCustom
SwitchesMechanical
Hot-swapNo
FirmwareProprietary
DIY kitYes
ConnectivityUSB
OSwindows, macos, linux
Released2022
Sources
AD · detail-mid

Similar devices

FILCO Majestouch Xacro M10SPKeyboards

FILCO Majestouch Xacro M10SP

A wired, split 70% keyboard with Cherry MX switches and ten dedicated macro keys along the inner edges, supporting hardware and software macros.

~¥24,200
Logitech ERGO K860Keyboards

Logitech ERGO K860

A wireless full-size ergonomic keyboard whose one-piece curved body splits the two key halves at 25° and raises the center by 12°, with a cushioned wrist rest built in.

~$119.99
Keychron Keychron Q11Keyboards

Keychron Q11

The Keychron Q11 is a wired, all-aluminum split keyboard that keeps a conventional row-staggered 75% layout and adds QMK/VIA support, hot-swap sockets, and two knobs.

~$204.99