*pictures don't seem to be loading, will have to figure that out later. Included one as attachment.
I am sure I am reinventing the wheel a bit here, but wanted a new project. So here is my take on a 5x12 ortholinear. I like the Preonic, but it does not support the split spacebar style I wanted. Determined through testing the layout with keycaps that for gaming I wanted a 2 unit space bar off center. The board with support full matrix, two/split space bar, single centered or off center. I have done PCB layouts for a Teensy 2.0/3.x/LC and smd atmega32u4, probably going the smd route as I can do a low profile case with that.
I will post the schematic latter. Would appreciate if someone looked over the QMK layout and let me know if that all makes sense, though probably easier to troubleshoot when I have a board.
For the firmware I think I have something that will work. There is a set of arrow keys right on the home row left hand and a number pad for the right. Have a layer with lowercase greek letters and math symbols that can be shifted to an upper case greek layer. I do a lot of technical documentation where that will come in handy. Easy switching between Colemak and QWERTY, muscle memory for some CAD applications is still in QWERTY.
QMK Firmware:
http://www.sinphi.com/projects/keyboard/bellbriar.zipimages not loading so links here
http://www.sinphi.com/projects/keyboard/BellBriar_013.pnghttp://www.sinphi.com/projects/keyboard/BellBriar_014.pnghttp://www.sinphi.com/projects/keyboard/BellBriar_015.pnghttp://www.sinphi.com/projects/keyboard/BellBriar_016.png