Rev 3

A 40% hotswap ortholinear RGB keyboard from KP Republic.

• Revision 3: "FXTwink single pcb"
• Keyboard Maintainer: ClownFish
• Hardware Supported: CSTC40 rev3
• STM32F402RCT6 MCU without separate LED driver and using tinyuf2 bootloader. Integrated USB connection.
• Hardware Availability: kprepublic.com

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

make kprepublic/cstc40/rev3:default

Flashing example for this keyboard:

make kprepublic/cstc40/rev3:default:flash

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

Bootloader

Enter the bootloader in 3 ways:

• 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 - some may have pads you must short instead
• Keycode in layout: Press the key mapped to QK_BOOT if it is available