Thumbfing split keyboard

Thumbfing

A 34-key split ortholinear keyboard tuned for thumb reach. Hand-wired, Cherry MX compatible, powered by nice!nano and ZMK.

34 keys Version 0.2.2 nice!nano + ZMK Hand-wired Cherry MX

Key specs

Key count

34 keys total (13+4 per side).

Layout

Split ortholinear and staggered.

Finger keys

26 finger keys, one per letter (no '.', ',' or ';').

Default layout

Modified QWERTY with T/Y/B/N moved.

Custom layouts

Designed for custom layouts while shipping with the modified QWERTY default.

Controller

nice!nano running ZMK.

Switches

Cherry MX compatible.

Build

Hand-wired with a 3D-printed case.

Power

Combined 2200mAh battery with USB-C charging.

Thumb cluster tilt

Thumb keys sit on a 10° angle and as close as possible to the fingers.

Sculpted finger heights

Each finger key has its own height, but presses straight down vertically.

Controllers

2x nice!nano.

Batteries

2x 103035 LiPo cells.

Switches

34x Cherry MX compatible switches.

Ground bus

22 AWG copper wire.

Direct wiring

28 AWG copper wire.

Case

3D-printed case.

Feet

Adhesive hemispherical rubber feet.

Hand-wired build. Each switch is wired by hand for a compact, clean routing plan.
Direct wired (no matrix or diodes). Every switch runs direct wiring with no matrix scanning or diode setup.
Cherry MX feel. Works with standard Cherry MX compatible switches and keycaps.
Fully wireless. Dual nice!nano controllers keep the board compact and cable-free.

Thumbfing keeps the board compact while maintaining a comfortable thumb cluster and an ortholinear layout for fast, consistent reach.

The dual nice!nano controllers and a combined 2200mAh battery keep it wireless, while USB-C charging makes desk time easy.