Split mechanical keyboard & keypad

Made a couple before but this time put everything to use for this endgame keyboard. Definitely the last one.

First was the keypad - saves some desk space since it also functions as a calculator (bonus feature of typing the result into your computer).

Then came the matching keyboard - not being ready for a more radical ergo design, this is a split 75% with added encodes/knobs for eg volume and media transport.

Details for those interested:

• QMK firmware
• Kailh Speed Green switches
• HK Gaming keycaps (full ISO/UK set without remortgaging my house)
• Newhaven slim OLED display
• Pro Micro (and an Adafruit Itsy Bitsy for more pins)