3. Electronics

• PCB
  • Layers
• Backlight
  • Addressable LEDs
• Connector
  • USB
  • PS/2
  • Inalámbrico
• Module connection
• Controller
  • Backlight
  • Brightness
  • Effects
  • Media/Fn keys/functions
  • Win key block with fn combination, not switch

• Kalerator, helping you turn keyboard-layout-editor.com layouts into PCB’s by generating EAGLE scripts.
  • https://github.com/skullydazed/kalerator
  • https://geekhack.org/index.php?topic=74139.0
• Guide on how to design keyboard PCBs with KiCad
• Keyboard Firmware Builder, upload keyboard firmware builder configuration or import from keyboard-layout-editor.com. Built on top of QMK (see docs), which is based on TMK (see TMK keyboard firmware).

• Single-switch PCB
  • https://geekhack.org/index.php?topic=55744.msg1254946#msg1254946
  • https://deskthority.net/workshop-f7/another-single-switch-circuit-board-t11420.html

• https://kbdfans.myshopify.com/collections/pcb/products/gk64-rgb-60-64keys-hot-swap-pcb
  • One WS8212B, WS2812B-MINI, WS2812D, WS2813B-MINI… per key.

SPI TFT/LCD + SD

5V     VCC         VCC
MISO   NC/SD_MISO  GND
SCK    CLK/SD_SCK  GND
MOSI   SDA/SD_MOSI NC
LCD_CS CS          NC   SD_CS
SD_CS  NC/SD_CS    NC   SD_MISO
D_C    RS          CLK  SD_SCK
RESET  RST         SDA  SD_MOSI
BL     -           RS
GND    GND         RST
                   CS

• En cada switch o como distribución uniforme:
  • LED de un solo color.
  • LED RGB no direccionable.
  • LED RGB no direccionable + CI.
  • LED RGB direccionable (CI integrado).

Considerar la potencia necesaria. Si se enciende un led RGB en cada tecla al máximo brillo, ¡el consumo puede ser de hasta 3.8A!