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Updated pictures and README
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crides committed Dec 23, 2020
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695 changes: 21 additions & 674 deletions LICENSE

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23 changes: 2 additions & 21 deletions README.md
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Fissure
=======

A 36/46-key split keyboard that combined (in version 1) the ideas of
[5plit](https://oddrocketkeyboards.blogspot.com/2018/05/5plit-v2.html) and [for science](https://github.com/peej/for-science-keyboard). The current design is version 2.1. You can find keymaps and gerber files for both versions if you want to build your own (I'm not used to version controlling PCB files, so if you have problems with them, please let me know). The firmware of this keyboard is based on [QMK firmware](https://github.com/qmk/qmk_firmware). The PCB files are in `pcb/`, and firmwares in `qmk/`.
My Choc-only split keyboard for desktop use with constant experiments. Current [keymap](http://www.keyboard-layout-editor.com/#/gists/99409a249d886554bd60af15782b2d50).

# Version 2

![](v2-gerber.png)

![](v2.jpg)

The gerber files for version 2 is in a separate folder (I still need to get used to version control with external-software-managed files), and there's a new version undergoing design.

[keymap](http://www.keyboard-layout-editor.com/#/gists/99409a249d886554bd60af15782b2d50)

# Version 1

Only firmware and gerber files are currently available, as I lost my design files when I accidentally deleted them (and I used no VCS at that time :)).

![](v1-gerber.png)

![](v1.png)

[keymap](http://www.keyboard-layout-editor.com/#/gists/f470cb5798ff4dc8b27f680a605061f3).
You can find keymaps and gerber files for both versions if you want to build your own (I'm not used to version controlling PCB files, so if you have problems with them, please let me know). The firmware of this keyboard is based on [QMK firmware](https://github.com/qmk/qmk_firmware). The PCB files are in `pcb/`, and firmwares in `qmk/`.
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Battery
BatteryHolder_Bulgin_BX0036_1xC
Bulgin Battery Holder, BX0036, Battery Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf)
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4pin35mmAudio


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D_SOD123_ThroughHole


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D_SOD123_axial


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D_SOD123_axial-dual


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Mx_Alps_100
MXALPS
MXALPS
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Mx_Alps_100-dualside
MXALPS
MXALPS
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Mx_Alps_125
MXALPS
MXALPS
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Mx_Alps_150
MXALPS
MXALPS
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Mx_Alps_150-dualsided
MXALPS
MXALPS
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MXALPS
MXALPS
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Mx_Alps_175-dualside
MXALPS
MXALPS
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MXALPS
MXALPS
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MXALPS
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MXALPS
MXALPS
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Mx_Alps_275
MXALPS
MXALPS
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Mx_Alps_625
MXALPS
MXALPS
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Pro_Micro


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SIngle_Pad


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SO-8_IR_IRF7413TR
8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm Body [SOIC] (see Microchip Packaging Specification 00000049BS.pdf)
SOIC 1.27
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SOLDER_JUMPER_3

solder jumper bridge configuration
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SW_TACT_ALPS_SKQGABE010
Low-profile SMD Tactile Switch, https://www.e-switch.com/system/asset/product_line/data_sheet/165/TL3342.pdf
SPST Tactile Switch
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SW_TACT_ALPS_SKRPABE010
C&K Components, PTS 810 Series, Microminiature SMT Top Actuated, http://www.ckswitches.com/media/1476/pts810.pdf
SPST Button Switch
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SolderWirePad_single_0-8mmDrill


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Teensy_20


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maple-4mm


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maple-inv


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SOD-123-dual-side

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LCD


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joystick


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nice_nano


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ProMicro
Pro Micro footprint
promicro ProMicro
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steno
LCD2.2in

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# Versions

## Version 3 - low profile?

As I find tented boards to be more comfortable (my palms have never been horizontal when I type), this is an attempt at a board that "automatically tents" and have different heights for the thumb and fingers. I also integrated [embedded steno](https://github.com/crides/steno) and thus the 2 added pinky switches (they are only used on the right side, as you can tell from the pictures) and the OLED for displaying the current stroke.

![](pics/v3.0.jpg)

## Version 2 - going smaller

A 36 key columnar-staggered version. I removed the nubmer row cuz I have dropped it in version 1. A SK6812 mini is added for status display.

The gerber files for version 2 is in a separate folder (I still need to get used to version control with external-software-managed files).

### Version 2.1

I decided that Logitech Unifying wireless is not usabily-possible, so that was dropped. Pinky stagger was increased by 2mm, and thumb cluster was rotated by 90degs so that they are closer together. Spacing was finally changed to choc spacing (17x18mm). A joystick footprint was added, but was never used due to the high force required to move the stick, and dropping 1 thumb button was quite time consuming

![](pics/v2.1.jpg)

### Version 2.0

I wanted to go wireless with this version, and so I added a 2x4 header footprint for a nRF24 module (for potential use with a Logitech Unifying Receiver) and a coincell localtion. Spacing was changed to slightly-above-choc (i.e. 17.5x18.5mm).

![](pics/v2.0.jpg)

## Version 1 - the start

A 46-key split keyboard that combined (in version 1) the ideas of [5plit](https://oddrocketkeyboards.blogspot.com/2018/05/5plit-v2.html) and [for science](https://github.com/peej/for-science-keyboard). This was my first ever mechanical keyboard, and I decided to go with a slightly more common layout (orthogonal & 46 key with a number row). However I quickly got rid of the number row, because it's hard for my fingers to easily reach it. It also uses MX spacing, which I quickly decided was too wide. I also botched on a RGB LED for status display.

Only firmware and gerber files are currently available, as I lost my design files when I accidentally deleted them (and I used no VCS at that time :)).

![](pics/v1.jpg)

[keymap](http://www.keyboard-layout-editor.com/#/gists/f470cb5798ff4dc8b27f680a605061f3).

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