how does it work the keyboard
TRANSCRIPT
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How does it work?
The keyboard
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The keyboard
● Oldest computer accessory (~1870)● Hasn't changed a lot● ~104 keys● QWERTY
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QWERTY
● 1873, Christopher Latham Sholes● to avoid jams● far from optimal● used everywhere, even on phones
Endless list of alternatives:Dvorak, Colemak, Workman, ...
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Common keyboards
● Rubber dome "switches" + membrane● Low quality● Cheap● 99%
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Common problems
● bottom-actuation● membrane is vulnerable● staggering● ghosting● max. 2-3 key rollover
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Mechanical keyboards
● PCB● Plate● Switches● Keycaps● Case● Controller
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PCB
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Plate
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Keyswitches
Cherry MX family
● Black - linear, 60g● Red - linear, 45g● Brown - tactile, 45g● Clear - tactile, 55g● Blue - clicky, 50g
... and endless customization: replaceable stems, custom springs,leds, lubing...
Bulking spring, Hall-effect, mechanical, ...
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Keycaps
profile - SA, DCS, DSA, ...
color
material - ABS, PBT
captions - font, position, double shot, laser-etched, dye-sub, ...
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Case
● old keyboard cases● made of wood● laser cut acrylic● 3D printed● CNC cut aluminium (anodized)
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Controller
● mostly Atmel microcontrollers● ErgoDox: Teensy 2.0 (ATMEGA32U4, 16MHz)
● Arduino compatible, Teensyduino● gnu avr toolchain● USB HID is well specified :)
https://github.com/dyuri/ergodox-firmware
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Written on an ErgoDox.2013, György HorákImages and most info from geekhack.org and deskthority.net.http://blog.euedge.com/blog/kutyuk/a-billentyuzet/
Thanks!