I uploaded a screen cap of a scope display program I wrote last year. It's located at the end of the Project Details section. It's running on a Model B+ with an older version of raspbian. It's actually displaying data captured with the analog2pi interface - before the DMI api was changed. And I spent far too much time on it making it look just like my trusty Philips scope.

Just a little tease to hold you over while I work on the module rewrite...