A keyboard with 42 keys based on the Atreus layout updated by keyboard.io to 44 keys. Uses Kailh Choc low profile switches with hot-swap sockets. The key positions have been adjusted to the 18x17mm recommended spacing. Compatible with ProMicro type controllers, but designed to be used with Nice!Nano. Also Compatible with BlueMicro840/833 as well as other controllers that uses the footprint of the Pro Micro. Note that the batttery + gets connected to Raw. Capable of n-key rollover.

There is gerber files for the PCB gerber folder.

It uses 3mm tall machine pin headers to create space for 301230 battery. The holes in the PCB are enlarged to allow the headers to sit flush with the board.

For every switch there is a 1N4148 diode in a SOD123 package. Diodes are soldered where an LED would normally be located, as the board has no lighting of any sort. Although can diodes be soldered by hand, a hot-air gun definitely makes task easier.

I've attached some rubber feet as well to keep it from sliding around.

Few things to note:

• There is a battery disconnect switch and a reset switch under the PCB.
• Although many controllers are shipped with included pin headers, they are not to be used on this board.