tdkf - TeensyDuino Keyboard Firmware

Simple functioning 6-key rollower matrix keyboard firmware for Teensy implemented in Teensyduino.

Requirements

• Arduino IDE
• Teensiduino installed into Arduino
• Teensy USB-based microcontroller (See tested versions)

Configuration Variables

• set up your own matrix and pinout
  • buttonColumns[]
  • buttonRows[]
• keymap[][] - keyboard layout in respect to matrix.
  • for details see documentation
• pinDelay - time (in microsecconds) to wait for pin level change
  • 10ms works with Teensy 4.0 and microswitches
  • try to increase this slightly if you experience key registration artifacts
• indicator LED
  • led - pin for LED controll to which indicator LED is connected
  • ledBase - "off" level of brightness for indicator LED
  • ledOn - "on" level of brightness for indicator LED

Successfully Tested With

• Teensy 4.0
• Arduino IDE 1.8.10
• Teensyduino 1.49-beta4

Notes

• 6-key rollower is limitation of USB Keyboard BOOT Protocol. Bigger rollower limit could be implemented via Raw HID.