Explore an update to the Universal Timer Project, covering new libraries, SMT assembly, and 3-volt operation considerations. Learn about JLCPCB's prototype and free SMT assembly services, and discover the challenges of running the board at 3v, including potential solutions for quiet beepers. Dive into Bruno Calou's Timer library for simple function execution, and understand callback routines and lambda functions. Get insights on piezo sounders, tiny speakers, and DIP switches for your projects. Gain valuable knowledge on PCB assembly, component selection, and software solutions for Arduino-based timing projects.