Hernán Astudillo developed and released the DiscretePID library for Arduino, contributing it to the arduino/library-registry to expand PID control options for embedded projects. He implemented the library in C++ with a focus on modularity and ease of integration, enabling Arduino developers to adopt PID control with minimal setup. By creating a clear release entry and ensuring proper repository tagging, Hernán improved the discoverability and accessibility of PID resources within the Arduino ecosystem. The work addressed the need for plug-and-play PID solutions, streamlining project startup for embedded developers. The contribution demonstrated depth in library development and ecosystem integration.