mcdox - Mechanical Computer Keyboard

Layout is similar to than of the Ergodox project, but in a unibody case.

Subdirectories

case - Lasercut design produced by exporting SVGs from KiCAD.
doc - Documents like datasheets stored for handy reference.
keycap - STL model generator written in OpenSCAD suitable for FDM printing. Generated models are tracked in keycap/stl because it takes a while (~10 minutes) to generate them.
pcb/ctrl - TODO Breakout PCB for connecting controller to switch grids.
pcb/hand - Reversible PCB which connects the switches in a grid.
- 38 buttons distributed over 5 rows, 8 columns.
- Lengths beside mounting holes (6mm, 15mm, 25mm) are for standoffs to achieve a tenting.
- Connect to control board with 15 core, 1mm pitch FFC-FPC cable. https://www.te.com/usa-en/product-1-84953-5.html https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/1-84953-5/2567541 https://uk.farnell.com/amp-te-connectivity/1-84953-5/connector-ffc-fpc-15pos-1rows/dp/3398659 https://uk.farnell.com/multicomp-pro/mp-ffca10150503a/ffc-cord-15p-same-side-50mm-wht/dp/3385337 https://uk.farnell.com/multicomp-pro/mp-ffca10151003a/ffc-cord-15p-same-side-100mm-wht/dp/3385339
- Low level lighting with LED on top and/or bottom, depending how the case looks.
- All diodes (1N4148 compatible), LEDs, and resistors are 0603 (imperial).
release - Stuff that's actually been manufactured.

Keycaps - The functionally simplest parts which are also the most difficult to source. 18x 1.5u, 56x 1u
Case - Standard 3mm acrylic from laser cutter.
PCBs - 1.2mm FR4, 2-layer, 0.15mm width/clearance 2x mcdoxHand, 1x mcdoxCtrl
Switches - CherryMX, or compatible like Gateron, Kailh. 74x
Diodes - 1 per switch. 74x
Microcontroller - Arduino Pro Micro from Sparkfun, or clone.
FPC connectors 4x
FPC cables - Connect hand PCBs to central controller.
LEDs - 0603 footprint 2x
Resistors - For LEDs and switch matrix. 10x 220R 0603
Pushbutton - For putting Arduino Pro Micro into programming mode. 1x