QMK Proton C

Brought to you by the QMK Collaborators, this is the new and improved external controller that you didn’t know you needed. The Proton C is a drop-in replacement for a Pro-Micro and so much more.

The incomparable qualities of the original:

• 32-bit Cortex-M4 Processor
• USB-C Port that won’t break off easily
• PWM on every exposed pin
• A break-away section with extra pins and a place to mount a speaker
• RESET button with a sane bootloader

And some new features for Rev 2:

• Clear solder mask on both sides
• Speaker pads on both sides
• You can now connect one side of the speaker to GND to gain an additional I/O pin

Take Your Handwired Build To The Next Level

The quintessential controller for your custom build. Yes, you can have USB-C and Audio in your hand-wired builds! The Proton C provides 23 GPIO pins. That’s enough to wire a full sized keyboard!

Note: Header pins are not included with the Proton C