If it is useful to anyone, I just released the source of some Zeo related code I wrote. My headband no longer works, but maybe this will be useful to someone else.
There are two components in this GitHub repository. One is a reimplmentation of the SmartWake adaptive alarm feature for Android, because I never saw the feature work for me. The other is PHP code to display CSV sleep data in progress graph form. Example here: http://stephenklancher.com/misc/zeo/graph.php