The OSBo source code is not published on Github yet. I should remind myself to create a repository as soon as possible. In the meantime, note that Dan’s interval program currently works on both OSPi and OSBo. You can follow the instructions here:
http://rayshobby.net/mediawiki/index.php?title=Python_Interval_Program_for_OSPi
to install the program. It will automatically detect whether you have Pi or Bo.