Show HN: I spent 3 years building a wearable to understand my back pain

Hello my name is Rohan Kotecha for the past 2 years I’ve been working on decoding my back pain with wearables which track how my spine moves throughout my life. This is inspired by fatigue from cookie-cutter advice/exercises from each new PT/chiro/osteo I'd see. It was a long journey involving teaching myself PCB design, many nights holed up in factories and hostels in Shenzhen to make cheap prototypes. I wrote up my process/thinking and thought the story of how this project came to be would interest you all. Thank you for reading.