Keyboards

altosys alt34

An open-source DIY 34-key split keyboard design from altosys with an aggressive column stagger, Kailh hot-swap sockets for Cherry MX switches, and QMK firmware.

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

altosys alt34
Image: © altosys (Manufacturer image)
Key layout
Image: QMK Firmware (Generated from QMK data (GPL-2.0))
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Where to buy

No US retailer found yet. Official site

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Pros

  • Compact 34-key layout with two thumb keys per hand
  • Kailh hot-swap sockets make switch changes easy
  • Works with standard controllers such as Pro Micro and Elite-C
  • Supports splitkb.com tenting pucks

Cons

  • No finished product is sold; you have to source the parts and build it yourself
  • The low key count means relying on layers
  • Wired only, with the halves joined by a TRRS cable

Specs

SplitSplit
StaggerColumnar
TentingAdjustable
KeywellNo
Thumb clusterYes
Keys34
LayoutsCustom
SwitchesMechanical
Hot-swapYes
FirmwareQMK
DIY kitYes
ConnectivityUSB
OSwindows, macos, linux
Released2022
Sources
AD · detail-mid

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