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qmk_firmware/keyboards/kprepublic/cstc40
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ClownFish e19991ec46
[Keyboard] Add CSTC40 rev3 (#25285) 
* refactor cstc40, add rev3 fxtwink variant

* cleanup readmes

* readme nitpick

* add cstc40 aliases

* format-json

* add communty_layouts per code review

* touch copied legacy files for newline

* fix LED flags

* update readme files per code review
2025-07-07 13:14:12 -06:00
..
keymaps/default Update keycodes for keyboards with RGB Matrix (#24484) 2024-11-24 12:03:08 +00:00
rev1 [Keyboard] Add CSTC40 rev3 (#25285) 2025-07-07 13:14:12 -06:00
rev2 [Keyboard] Add CSTC40 rev3 (#25285) 2025-07-07 13:14:12 -06:00
rev3 [Keyboard] Add CSTC40 rev3 (#25285) 2025-07-07 13:14:12 -06:00
info.json [Keyboard] Add CSTC40 rev3 (#25285) 2025-07-07 13:14:12 -06:00
readme.md [Keyboard] Add CSTC40 rev3 (#25285) 2025-07-07 13:14:12 -06:00

readme.md

CSTC40

This keyboard has 3 known hardware revisions, please be sure to flash the correct firmware for your PCB

A 40% hotswap ortholinear RGB keyboard from KP Republic

Revision 1: "daughterboard"

  • STM32F402RCT6 MCU with IS31FL3733 LED driver, using stm32-dfu bootloader. Uses a separate daughterboard for USB connection.

  • Upon entering bootloader mode QMK Toolbox will display this message:
    STM32 DFU device connected (WinUSB): STMicroelectronics STM32 BOOTLOADER (0483:DF11:2200)

Revision 2: "single pcb"

  • STM32F402RCT6 MCU with IS31FL3733 LED driver, using stm32-dfu bootloader. Integrated USB connection.

  • Upon entering bootloader mode QMK Toolbox will display this message:
    STM32 DFU device connected (WinUSB): STMicroelectronics STM32 BOOTLOADER (0483:DF11:2200)

Revision 3: "FXTwink single pcb"

  • STM32F402RCT6 MCU without separate LED driver, using tinyuf2 bootloader. Integrated USB connection.

  • Upon entering bootloader mode the board will appear in your computer's file system as a new USB mass storage device.