The Microcontroller Kit automates the generation and deployment of code to microcontrollers and makes possible the design and implementation of fun and exciting hands-on projects from the Wolfram Language. It is built on a single superfunction to provide a unified interface to handle a wide range of microcontrollers, their input and output configurations and third-party libraries. By eliminating the error-prone, tedious and inconvenient iterations of the lower-level source code, it provides greater flexibility and efficiency to the overall project workflow. The functionality is especially useful in projects involving controller or filter designs, data acquisition or HIL (Hardware-in-the-Loop) simulations.