A (much) better Pro Micro
The Bit-C PRO is a pro-micro compatible microcontroller board featuring the RP2040, designed for DIY keyboard enthusiasts. It features a sturdy through-hole USB-C connector that is more rugged than a standard USB micro B. It's only 1mm thick, so it sits slim and low. The Bit-C ships with the UF2 USB bootloader, which make flashing new firmware as simple as drag-and-drop. 100% of Bit-C units are exhaustively tested before shipping, ensuring you're spending your time building, not debugging. Best of all, it comes in white!

100% Pro Micro compatible
The Bit-C is a drop-in replacement for any Pro Micro MCU, including the Bit-C. In addition, the Bit-C PRO adds 4 additional GPIO outputs. The Bit-C PRO ships with 4MB of flash storage, which is over one hundred twenty times more than the 32KB of storage on the Pro Micro! Overcurrent, overtemperature, and backdrive protection are included on every board.

RGB LED
The built in RGB LED shows power status by default, and can be dimmed to different brightnesses using PWM control. Don't like the built-in LED? Turn it off. Use it to show layer or caps lock status.

The Bit-C PRO is supported by Arduino IDE, MicroPython, CircuitPython, QMK firmware, and more.