Recently I read this old WIRED article linked on a dicussion forum.
It kindof blew my mind. For a while in 2004, a man in Germany wore a belt which continuously gave tactile feedback indicating which direction was north, and he developed a sixth sense of direction.
"On a visit to Hamburg, about 100 miles away, he noticed that he was conscious of the direction of his hometown. Wächter felt the vibration in his dreams, moving around his waist, just like when he was awake."
So obviously, I had to have a magical north pointing belt myself. There are a bunch of project pages across the web of folks who have made their own, but they were all pretty old and bulky, so I’ve started a little project to build one using slightly more up to date parts. It’s currently a work in progress, but here’s a picture of the breadboard prototype.
You can follow along with my progress in this github repo: https://github.com/dps/northbelt.