Imagine having one device that combines the functionality of a macro keyboard, a joystick, a 3D mouse, and even a music instrument - all in one! That's what I'm trying to achieve with my latest project: a single, modular input device that can be customized to fit various needs. I've been searching for a replacement for my old joystick, which is on its last legs, and also wanted a macro keyboard for video editing. But then I stumbled upon an idea - why settle for four separate devices when you can create one monster? I'm talking about a device that can send MIDI, be used to create music, and even control multimedia functions. The project, dubbed CIMDIT (Multiple Input Device), aims to achieve this by integrating various modules, including a base module for PC interface, key-matrix modules, rotary encoder modules, analog input modules, and even the possibility of adding SPI. The beauty of it all lies in its modularity, allowing users to plug in different modules as needed and recompile the software. In this series of blog posts, I'll be taking you through the process of building CIMDIT, from the electronics to the software and 3D printing. Don't worry if you're not an electronics expert - it's not rocket science! You can expect to learn about minimal previous knowledge required and how to bring this project to life. So, are you ready to join me on this exciting journey and create something truly unique? Let's get started!