DFRobot BOSON Inventor Kit is a set of modular electronic building blocks for young inventors, enthusiasts, STEM educators, and designers. This coding-free kit requires no soldering and is effective as a STEM classroom teaching tool. The Boson kit helps break complicated circuits into simple and functional modules that are easy to understand. This kit comprises 37 modules, including seven input modules, six actuators, 18 functions, and six power modules. The Inventor kit includes 12 activity cards that can be used to build interactive projects with LEGO blocks, wearable materials, and attached cardboards instantly.