There are still design tweaks needed around the power switch and maybe the jewel but I think this part of the project is approaching a viable state. After this comes programming the UI (How can a RGB pixel ring and a D-pad be used most effectively?) and after that comes programming the spells (Light, Rainbow, Party, speficic LED Patterns, etc.). At that point, we’ll have a level one amulet ready for release.
This amulet is being designed as step one of a platform rather than a purely frivolous trinket. A larger jewel or otherwise modified case could support additional sensors or displays. Maybe a belt buckle or bracer accessory would be more suitable for certain applications. Maybe a tiny epaper screen inside your hoodie’s hood?
Now that we’re all walking around with computers in our pockets, general-purpose wearable computing seems less like a distant potential future and more like the recent past.