Keyboards

ひねもすたり Around Forty

A hobbyist-made wireless split ortholinear low-profile keyboard with 17mm key pitch, a 3D-printed case, and a detachable 20mm trackball on either the left or right half.

Key specs auto-matched against source pages · Last verified: 2026-10-17

ひねもすたり Around Forty
Image: © ひねもすたり (Manufacturer image)
~¥34,000

Where to buy

View at BOOTH ひねもすたりView at BOOTH ひねもすたり (AroundFortyRB V2 kit)Official site

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Pros

  • Trackball unit detaches magnetically for easier carrying
  • Compact 17mm key pitch
  • Wireless operation on ZMK firmware
  • Gasket-mount-like feel from 3mm foam

Cons

  • Key switches are not included
  • Changing the keymap requires GitHub and ZMK know-how
  • Home 3D-printed case may have burrs or print marks
  • Off-the-shelf 17mm-pitch keycaps are scarce

Specs

SplitSplit
StaggerOrtholinear
TentingNone
KeywellNo
Thumb clusterNo
Keys42
LayoutsCustom
SwitchesLow-profile
Hot-swapYes
FirmwareZMK
DIY kitNo
ConnectivityBluetooth
OSwindows, macos, linux
Released2025
Sources
AD · detail-mid

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