In this second part of our ESP32-controlled submarine series, we dive deeper into the intricate details of building and enhancing the system. From refining the code to adding new mechanisms, we’ll explore the updates I’ve made over the past couple of months. This isn’t a tutorial but rather an explanation of how I started building this project-from the beginning to where I am now-documenting the process of creating this underwater robot. Join me as I navigate through challenges, test solutions, and continue the journey toward a fully operational ESP32-powered submarine!