I've mentioned this before, but the Bosch 9-DOF sensors are accurate and have enough fidelity to track me walking through my house while sitting in the back roo

I've mentioned this before, but the Bosch 9-DOF sensors are accurate and have enough fidelity to track me walking through my house while sitting in the back room on a desk. That's the accelerometer. The gyros can detect music playing at the opposite end of the house assuming the speakers are big enough - phone playing YouTube, no, but sound bar, yes. Make no mistake that MEMs sensors are really very good. I was trying to wire something together to track what vehicles were travelling down my forest road and left the room with the data streaming, and came back to be impressed.