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Designing Keyboard 101
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nasa9084
May 04, 2019
How-to & DIY
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Designing Keyboard 101
How to Design my/your own keyboard
nasa9084
May 04, 2019
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Transcript
Designing Keyboards 101 @nasa9084
$ whoami • @nasa9084 • LINE corp. • Go /
Kubernetes
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What are you using?
FILCO Majestouch Convertible 2 (Cherry MX Blue) 2016.04 - 2018.10
Ergodox EZ (Cherry MX Blue) 2018.10 -
Ergodash (Kailh BOX white) 2019.02 -
Self-madeʁ
Self-made Keyboards • Buy keyboard kit, build by your hands
• Shop • https://yushakobo.jp • About 25,000 yen ~
Mint60 By eucalyn_
Corne Cherry By foostan
Nomu30 By recompile keys
Keyboard Related Addiction • Keyboard Buying Addiction • Keyboard Making
Addiction • Key-switch Acquisition Syndrome • Key-cap Acquisition Syndrome • Cable Making Addiction • Keyboard Designing Addiction
Designing Keyboards 101 @nasa9084
Components • Key-switches (Cherry MX compatible) • Key-caps • PCB
• Diode (1N4148/1N4148W) • Controller (ProMicro) • Cable, Reset switch, Jack, LEDs, and so on…
Cherry MX (compatible) switches 40 yen / key ~
ProMicro Arduino compatible micro controllers by sparkfun 2,492yen
ProMicro compatible controllers Arduino compatible controller compatible controller… 300 yen~
QMK Firmware • Open source keyboard firmware for ProMicro •
https://github.com/qmk/qmk_firmware • Support 6 keyboards and community keyboards $ git clone github.com/qmk/qmk_firmware $ cd qmk_firmware $ make $KEYBOARD:$KEYMAP:avrdude # if your keyboard is Mint60 $ make mint60:default:avrdude
Designing
First step to the Endgame https://booth.pm/ja/items/1044084
How to Design a Keyboard 1. Design key layout 2.
Design schematic 3. Map schematic and footprint 4. Arrange parts layout 5. Wiring 6. Order your PCB
Design Key Layout • Design with Keyboard Layout Editor •
http://www.keyboard-layout-editor.com
http://www.keyboard-leyout-editor.com
Keyboard Layout Preset • Begin from famous keyboards • Add
new keys you want • Remove keys you don’t use http://www.keyboard-layout-editor.com
Design Schematic • Use KiCad • is a CAD for
creating PCB • http://kicad-pcb.org • • Current stable is 5.1.2
Key Matrix • 14 pins are avail for key input
• Layout keys in a matrix to use many keys • Detect a key by 2 pins
Other Components • Connect all components to ProMicro • Connect
left and right by TRRS cable • Reset switch to reset ProMicro • (Optional) LED
TRRS Cable • 3.5mm - 4 contacts phone connector cable
• Tip-Ring-Ring-Slave cable • Hard to find to buy • Connect right hand and left hand
Map Footprints Schematics → Parts
Arrange Parts Layout • Can use raw data from keyboard-
layout-editor • Can use Python script © By foostan
Wiring Components • with 0.25mm wire • 0.5mm for power
• Very hard… © By foostan
Order PCB • Output Garber format file • Confirm with
KiCad GarbView • Measure size • Rename files • Order from https://www.elecrow.com
Q?