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
Add Audio To Your Build
The Proton C comes with speaker pads, so you can add Audio to any build. Just solder in a Mallory Sonalert AST1109MLTRQ and you’re setup for auditory feedback. Play a sound for layer changes, use Music Mode to turn your keyboard into a piano, enable Audio Click, or just use it as a delightful little soundboard. The audio setup will give you all new ways to increase the customization of your keyboard.
Upgrade Your Existing Pro-Micro Based Kit
Add a Proton C into any QMK-compatible kit that currently uses a Pro-Micro, and compile Proton C firmware without any extra work! We’ve done the heavy lifting of making your existing keyboards work without keymap changes. Just adjust your make target and it will build an ARM firmware instead of an AVR firmware.
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!
What's new with 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
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
Not in Australia?
QMK Proton C Rev 2 Technical Specifications
Processor: ARM-7 Cortex-M4 STM32F303CCT6
Core Size: 32-Bit
Connectivity: USB, I²C, SPI, UART/USART
Peripherals: PWM, DMA, I²S
Number of 3.3V I/O: 23
Number of 5V Output: 1
Program Memory Size: 256Kb
RAM Size: 40K
USB-C Connector With Throughhole Fixing Pins
5v Output for WS2812 RGB Strips
RAW pin for 5v VCC-supply
Speaker Pad for AST1109MLTRQ on Both Sides