0xCB Helios - Pro Micro/Elite-C compatible MicroController with RP2040

Meet Helios, the RP2040 Controller with Pro Micro/Puchi-C/Elite-C compatible pinout, 16MB (128Mbit) of flash, Dual ARM Cortex-M0 @133MHz, and 264kB SRAM.

• ESD protection chip onboard
• Supports VBUS detection for split keyboards
• You can select VBUS instead of raw for the 5V pin to hook up an external USB port with the included D+ and D- pads while maintaining ESD protection.
• A default off red power LED that can be turn on via a jumper
• Blue user LED
• Level-shifter to drive 5V components
• Single button reset circuit which enables you to reset the board with a short click
• Enter the bootloader with a long (>500ms) click
• Open-source by 0xCB

The Helios comes without header pins, to keep the price low as possible.
I highly reccommend to use the "Single Row Sockets" from Mill-Max, the cheaper alternative, or the "Spring-loaded pin headers".
You can find the standard pin header here.

Example to compile the QMK firmware for the Helios (uf2 file, not hex).

qmk compile -kb crkbd/rev1 -km via -e CONVERT_TO=helios