STM32 Keyboard/Macropad Controller

Product Overview

This is the perfect board for making a handwired keyboard or macropad. There are 33 available I/O pins so you can make a full “100%” keyboard. This controller is also great for macropads with it’s small size, and enough pins to support screens, rotary encoders, and more! STM32 chips are generally considered some of the best controllers for keyboards because of their large amounts of storage and more I/O pins compared to ATmega32U4’s. If you are a beginner, don’t be intimidated by learning how to use this controller, It is as easy as using a keyboard with a Pro Micro board. We have in-depth tutorials on how to use this board, as well as making keyboards and macropads with QMK and Arduino keyboard libraries.

The STM32F072 onboard has the default DFU bootloader flashed for using it’s native USB. There is 128 Kbytes of flash memory compared to 32 Kbytes on the ATmega32U4. This means much more keyboard features, shortcuts, and macros.

Features

• 33 I/O pins
• QMK compatible
• 3.2mm thick without button, 4.2mm with button
• Based on STM32F072
• Mid-mount USB-C
• ESD control
• Mounting hole

Documentation

• Tutorial
• Schematic
• PCB Files