qmk_firmware/keyboards/ymdk/ymd21/v2/readme.md

YMDK YMD21 v2

A 21-to-24-key numpad with RGB Underglow, USB-C, and support for in-switch LEDs.

• Keyboard Maintainer: The QMK Community
• Hardware Supported: YMDK YMD21 v2 (ATmega32U4)
• Hardware Availability: YMDKey.com, AliExpress

Make example for this keyboard (after setting up your build environment):

make ymdk/ymd21/v2:default

Flashing example for this keyboard:

make ymdk/ymd21/v2:default:flash

Bootloader

Enter the bootloader using one of the following methods:

• Bootmagic reset: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
• Physical reset button: Briefly press the button on the back of the PCB
• Keycode in layout: Press the key mapped to RESET if it is available

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.