Stm macro keyboard
|Project STM macro keyboard|
|A quick and easy usb keyboard for macros and external numpad.|
Source code and design files are available at: https://github.com/ColoMAX/stm_macro_keyboard
It uses the native USB interface the STM provides. It is not recommended for safety but can be convenient. There are some arbitrary safety features, but much to be desired.
A possibly helpful guide to the used microcontroller is STM32.