Atreus Keyboard

A keyboard with 42 key Atreus layout. Uses Kailh Choc low profile switches with hot-swap sockets. Compatible with ProMicro type controllers, but designed to be used with Nice!Nano. Capable of n-key rollover. There is enough spacing between keys to fit all of the commonly available keycaps - transparent, flat and concave. PCB and case exports available in the github repo!

Materials

Name	Part	Size	Amount
Switch	CPG135001D0X	-	42
Socket	CPG135001S30	-	42
Diode	1N4148	SOD123	42
Controller	nice!nano	-	1
Battery	XZK 301230	30x12x3.0mm	1
Bolt	M2 Hex	4mm	8
Machine Headers	Mill-Max	13p 3mm	2

PCB

⚠️ No power switch for the battery
For every switch has a diode, soldered where an backlight LED would normally be located, providing n-key rollover.

Sockets

The PCB has 1.5mm wide holes for mounting the controller socket. This allows soldering machine headers flush with the board. The nice!nano controller originally ships with low profile headers, which won't fit the battery underneath the controller, if soldered in this manner. Therefore a pair of 3mm tall headers had to be separately ordered.

Case

All 3d printing was done with 0.4mm nozzle at 0.2mm layer height from PETG.
The bottom case is attached using eight 4mm long M2 bolts.
Added feet using 1mm thick rubber tape

Led

In the nice!nano's cover there are two openings for the LEDs. They can be filled with a dab of hot-glue before the print is removed form the bed to get a more diffused look ...for science, you monster.