Choose Arduino Modules by Scene, Not by Specification

Choose Arduino Modules by Scene, Not by Specification A module list tells you what to buy. A scene tells you why the module belongs there. That difference matters. Most Arduino beginners ask the wrong shopping question: Which sensor should I buy? A better design question is: What moment do I want the object to understand? If the moment is a visitor entering a gallery, the device needs presence sensing. If the moment is a hand moving closer, it needs distance. If the moment is a deliberate choice