Summary:
- The article discusses a DIY watch project that features a custom real-time operating system (RTOS) developed by the creator.
- The watch is powered by an STM32 microcontroller and includes a small OLED display, a button, and a battery.
- The custom RTOS allows the watch to display the time, date, and other information, and the creator has shared the code and schematics for others to build their own version.