LED under the skin
So, I really do like the Northstar but I'm not sure I'm in a place where I can commit the money and the physical side of things. But, I really want an LED under the skin. Has anyone built one of these? I was thinking it could work something like a pared down version of the bone microphone in this post. It seems like it could fit in a pretty small area and keep enough charge to not have to be recharged more than once a day, and possibly less.