ScottoSplit Handwired Keyboard

The ScottoSplit is a 36-key split column-staggered ortholinear keyboard that uses a single MCU and VGA cable to connect the halves. It uses Outemu Blue switches and Drop DSA Astrolokeys for the keycaps. The beautiful thing about using a VGA cable is that the matrix can be passed over the multiple available wires meaning it only needs a single controller. 

 

Getting One

If you’re interested in getting one assembled, contact me and we can discuss the components and other details for a commissioned build. However, the files are available for free here if you want to build one yourself.

In addition to the 3D printed case, heat shink tubing, wire, and copper, you'll also need tools along with the following components:

• 1 Arduino Pro Micro
• 36 1N4148 diodes
• 2 VGA connectors
• 1 VGA cable
• 18 M2x8mm standoffs
• 36 M2x6mm screws
• 8 M2 heat set inserts
• 36 MX switches
• 36 1u keycaps

 

 

Wiring

When looking at the back of the board, the columns (blue) go to the following pins on the controller from right to left: 3, 4, 5, 6, 7, 8, 9, A3, A2, A1

Then the rows (red) go from top to bottom: 15, 14, 16, 10

Keep in mind, you can connect anywhere on the column or row to the controller, it doesn't need to just be at the end.

 

You can find the firmware files on the qmk_firmware repository or you can compile them online using the QMK Configurator. However, QMK is often slow at getting changes merged and because of that you can find the most up-to-date firmware on the ScottoKeebs Github repository. Also available are the pre-compiled firmware files that you can simply download (right click, save as) and flash using QMK Toolbox: 

default.hex - Default QMK keymap in QWERTY.
vial.hex - Default QMK keymap in QWERTY with Vial configurator support.
scotto.hex - My personal QMK keymap in Colemak.

After flashing vial.hex, you should load the vial.vil configuration file within the Vial application to ensure everything functions as expected.

 

Video

 

Photos