Very interesting Horacio, we are currently doing long term sleep research to help people with mental disabilities. We do this with multiple Beddits and although the iphone app looks good its not always behaving as we would have liked, plus the problem of requiring 1 phone per Beddit.
Also we use the Beddit API to collect bulks of data but we are noticing that the data is summarized incorrect sometimes. The data that is supposed to be from one night regularly spans two for example.
Your posts have inspired me to look into raw measurements maybe run this on a PC, I read your articles on the raspberry PI but to listen to up to 10 Beddits at once is probably a bit much. I’m definitely looking forward to you next articles