Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...

AVRTOS is a real-time operating system (RTOS) crafted for 8-bit AVR microcontrollers. It aims to provide an efficient and highly configurable RTOS solution for AVR-based systems. Fully C/C++ compliant ...

If you were to point to a single device responsible for much of Hackaday’s early success, it might be the Arduino Uno. The little board from an Italian university with its easy to use dev environment ...