Keyboard Builders' Digest / Projects

Tiny18

A tiny wireless split by k3peta: Tiny18 – and yes, the name refers to the number of keys.

KBD.news
Published August 26, 2025

The Tiny18 is a minimalist split keyboard shared by itoolsjp aka k3peta. It was designed for Japanese input, and the halves are driven by Seeed XIAO BLE controllers.

I started using a cute 18-key ergonomic keyboard – itoolsjp.

This is not a chording keyboard in the general sense, check out the keymap in the repo for more insight.

Features

• 18 keys
• Choc footprint switches, soldered
• Seeed XIAO BLE nRF52840 controllers
• reversible PCB
• diodeless design
• 3D-printed case

Resources

No KiCad files, just Gerbers and firmware:

• https://github.com/k3peta/tiny18
• https://github.com/k3peta/zmk-config-tiny18

Published on Tue 26th Aug 2025. Featured in KBD #197 (source).

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