Os eruditio Keyboard

Designed this board I call the Os eruditio (meaning "bone of knowledge/removing oneself from ignorance", very cheesy, I know) for the Keebio Levinson PCB.

The idea behind this board was to be able to use a trackball mouse, like the MX Ergo together with it, thus having a kind of "integrated trackball", but being more flexible, and being able to remove the mouse to be used on it's own, or moved around to be more comfortable. The case was designed with this restriction in mind, allowing plenty of space underneath the board for the mouse to sit. To maintain a stable case that would be able to support the keyboard, I designed it using Fusion 360 "Generative Design", simulating the weight distribution under the parameters I set. I was looking for this kind of organic, bone like design, which also allows for a cheaper 3D print.

What you'll receive:

• Two STL files for the case (one right half and one left half)

• DXF file for the plate (this is the same for both halves, so you need to get this made twice)

How to get yours made:

• You can get the case made by Shapeways (or of course try to print it out yourself). For Shapeways, I recommend using "Versatile Plastic" (Nylon 12) as the material. (Make sure the dimensions are correct, it should be X:145.12 Y:144.45 Z:96.26 mm)

• You can have the plate cut out of any material, I used polished stainless steel. Make sure the plate is 1.2 mm thick, since Choc Switches won't clip into anything thinner.

Other components required:

• Levinson rev. 3.5 PCB, which can be found here

• 48 Choc switches, as well as keycaps

  • lightweight switches are recommended, such as the Choc Purpz

• 6 M2 screws (I used 5mm length, but this isn't super important, as these just snap into the holes of the case)

• Thumb-Trackball mouse, this design was specifically made with the MX Ergo in mind though

• Rubber tape to attach to the bottom of the board, like this (glued to the board like this)

Here's a typing test showing how I use the board with a trackball mouse. It's a comfortable angle (40 degrees), that is basically the same as the resting angle of my wrist.

If you want to stay updated on future versions of this design, you can follow my YouTube channel!

If you need any help, you can reach out to me on Reddit!