I'm really interested in this project, but wish they had left polyphasic sleep entirely out of it. The sleep data they provide (REM and NREM monitoring, etc) seems fantastically useful, and the lucid dream induction is intriguing, if dubious; however, the inclusion of polyphasic sleep makes me suspicious of the scientific rigor of the project on a whole. It's making it hard to decide whether to go ahead and back - on the one hand, I sleep with a mask anyway, definitely want the sleep monitoring capabilities the device offers, but on the other, can I trust it?
I presume that the way the lucid dream induction works is by blinking an LED when the onset of REM sleep is detected. There are other products out there already that do this; the idea is that you'll train yourself to notice any blinking red lights or objects in your dreams and associate that with realizing that you're dreaming.
Yeah, I'd like one just to figure out how much I'm really sleeping and how much of that is deep sleep, etc.
Hardware-wise, it sounds a lot like the old Zeo Personal Sleep Manager. I was interested in getting one of those, but then the company went other and shutdown their API, bricking all their devices. I hope these guys don't make the same mistake.
I can replace the lipo battery with another one with the same capacity. However, I will have to expand the case. My current plan is to seal the battery in a few layers of aluminum tape and to 3D print a "gasket" system.
The company going out of business doesn't "brick" anything, at least for my older system. There are programs that can read the data format.