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geekhack Projects => Making Stuff Together! => Topic started by: Turbinia on Mon, 16 October 2017, 12:02:30

Title: Bell Briar - Ortholinear 5x12
Post by: Turbinia on Mon, 16 October 2017, 12:02:30

*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.zip (http://www.sinphi.com/projects/keyboard/bellbriar.zip)

images not loading so links here
http://www.sinphi.com/projects/keyboard/BellBriar_013.png (http://www.sinphi.com/projects/keyboard/BellBriar_013.png)
http://www.sinphi.com/projects/keyboard/BellBriar_014.png (http://www.sinphi.com/projects/keyboard/BellBriar_014.png)
http://www.sinphi.com/projects/keyboard/BellBriar_015.png (http://www.sinphi.com/projects/keyboard/BellBriar_015.png)
http://www.sinphi.com/projects/keyboard/BellBriar_016.png (http://www.sinphi.com/projects/keyboard/BellBriar_016.png)

(http://www.sinphi.com/projects/keyboard/BellBriar_013.png)
(http://www.sinphi.com/projects/keyboard/BellBriar_014.png)
(http://www.sinphi.com/projects/keyboard/BellBriar_015.png)
(http://www.sinphi.com/projects/keyboard/BellBriar_016.png)

Title: Re: Bell Briar - Ortholinear 5x12
Post by: Phenix on Mon, 16 October 2017, 12:15:25

Looks good! But wouldn’t using POS caps for the 2u be easier??
Nevertheless, your variant is more elephant..

Title: Re: Bell Briar - Ortholinear 5x12
Post by: Turbinia on Wed, 18 October 2017, 21:30:21

Bit of a delay, but here are is the schematic and KiCAD files for the atmega32u4 version of the board. I don't think the teensy version is really needed. It requires a higher profile case and isn't as elegant. If you can solder switches and 0805 diodes, you can drag solder a TQFP package. All made available as CC BY-NC-SA 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/).

The holes in the PCB are 2.7mm by 3.2mm slots, so should fit M2.5 or M2 hardware. Planning on M2 for the fit with my plate.

schematic:
www.sinphi.com/projects/keyboard/atmegaTwelveByFive.pdf (http://www.sinphi.com/projects/keyboard/atmegaTwelveByFive.pdf)

KiCAD files:
www.sinphi.com/projects/keyboard/atmegaTwelveByFive.zip (http://www.sinphi.com/projects/keyboard/atmegaTwelveByFive.zip)