Stop Buying Random Arduino Modules: A Practical Kit for Interactive Devices Most Arduino shopping lists are organized by component category. Sensors. Motors. Displays. Wireless boards. LED strips. That is useful for inventory. It is not useful for designing an interactive device. An interactive device is not a pile of modules. It is a loop: The device senses something. The controller decides what that signal means. The output responds in a way a person can feel, see, hear, or move with. If you buy modules without that loop in mind, you end up with a box full of parts and no clear project. This guide recommends common modules by interaction role, not by catalog category. Affiliate disclosure: As an Amazon Associate, I earn from qualifying purchases. The Amazon links in this guide use an affiliate tag.…