Hand wired 54key full split mechanical keyboard

To cut a long story short, I started feeling pain in my wrists and shoulders in Dec 2014. I did some research into ergonomic keyboards, bought a Kinesis Freestyle, got sucked into the mechanical keyboard scene, hand wired a test 8key keyboard from switch tester, sourced and hand wired an Atreus, ordered an Infinity Ergodox but the wait and delays were killing me, so I designed and built my own, codenamed blackhawk.

High resolution photos

Design goals

Fully programmable - multi-layer keymaps, mouse keys, oneshot modifiers, macros, ...
Full split with laptop wide separation - most comfortable hand positioning I've found
Non-staggered columns - human fingers don't move diagonally
Staggered rows - human fingers have different lengths
Just enough keys you can reach - no stretching, no hand movement
Multiple thumb keys - pity to waste two thumbs on just one key
Trackpoint on home-row - great mouse at your finger tip (guide)
Tactile mechanical switches - once you go mechanical, you can't go back
Full hand with integrated wrist rests - mobility and tenting
Small, minimal and compact - mobility

Keymap layout

Parts

Gateron brown switches
Teensy 2.0 micro-controller
USB type-c breakout board
USB type-c to USB A short coiled cable
Interconnect 11 conductor cable
Vortex PBT cherry keycaps
Grafiti skin surface slim wrist rest
3mm hex bolts and nuts
Trackpoint module and 16G labret for stem

Case

Laser cut transparent gray acrylic 3mm 5 layer sandwitch case
Ponoko ready-to-cut P3 design file available in case/
Note: the original design called for USB type-c interconnect, but due to a defective cable with current leakage, I opted for a fixed interconnect, so the breakout board cutout is no longer required.

Inspiration and thanks