Crafting my own PCB and schematic was a hands-on adventure, starting from square one. From grasping the basics to diving into intricate details, I learned the ins and outs of every component, from the battery voltage regulator to the heart rate sensor and accelerometer. Integrating a Type-C connection and a protocol converter for microcontroller flashing injected excitement and challenge into the mix. Though the journey is ongoing, each step forward brings a sense of accomplishment and fuels my passion for tinkering and creating in the world of electronics.