Are we seeing more wristwatch PCB swapping projects because more people ... [Joey] says you can swap in other parts as long as they’re in the QFN or LGA size range. We think an IMU is in order ...

This was also how the original modification by [Tomasz Mloduchowski] worked, only now it comes in a handy (OSHPark) PCB format. After removing the VL805 QFN package and soldering in the bridge PCB ...