Editing Atreus (section)

==Construction==

The case has four layers, (3mm top layer, 3mm switch plate, 5-6mm spacer, and 3mm bottom layer) laser cut from either wood or acrylic. The construction uses [http://gerblook.org/pcb/NxuQ7JEGZ9KDHQV3TiAaLe a PCB] with an [https://www.pololu.com/product/3101 A-Star Micro] controller (with an AtMega32u4 chip) mounted onto it. There are 40 1x keys and two 1.5x keys in the middle for the thumbs.

The canonical case design is a couple EPS files, and there is a programmatically-generated OpenSCAD design that can be recompiled after tweaking the angles, row spacing, number of rows/columns, etc. Alternate case designs must be hand-wired.

The [http://atreus.technomancy.us/assembly.pdf assembly guide] steps through the construction process with instructions and photos.

The modifiers typically feature linear switches even when the rest of the keyboard is tactile because they are meant to be held instead of tapped, so they do not benefit from the tactile response.