This is a
- tiny (44key),
- budget (~50€ total expense),
- portable (HID bluetooth & 5aH battery)
- easy to diy (little wiring & soldering needed),
It is made by wiring two Motospeed K22 numpads to a Teensy++ 2.0, while reusing as much of the original PCB as possible. The numpads come with Outemu red linear switches.
(A detailed guide will be posted and linked later)
Keyboard Maintainer: Deckweiss
Hardware Supported: Motospeed K22 numpads wired to Teensy++ 2.0 according to my guide (upcoming).
Hardware Availability: Ebay, AliExpress
Make example for this keyboard (after setting up your build environment):