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[link] 2005-07-21T23:48:44 MIDI phrases to control home lighting: http://cvs.bigasterisk.com/viewcvs/room/lightswitchmidi?rev=1.4&content-type=text/vnd.viewcvs-markup has code that reads this n3 http://cvs.bigasterisk.com/viewcvs/room/midicodes.n3?rev=1.2&content-type=text/vnd.viewcvs-markup which describes midi note patterns and the light levels they should trigger. Now when I play certain phrases into the piano keyboard, the lights change. Middle C followed by the F above will turn on the main 4 lights all the way, for example. C-Eb turns them on partway. The n3 should have been a lot prettier, but rdflib currently can't parse any kind of advanced n3 syntax. The graph query code should use SPARQL and turn three loops into one, but I don't have any SPARQL installed yet. I should probably switch to redland for both of those. I hope it's easy to port between those libs. I am quite satisfied with pyalsamidi, since despite not knowing how alsa midi works or what half the terms mean, I was able to use the example event reader code and get my program listening to midi within a few minutes. I could probably get rid of the sequencer setup and just use raw midi events, given my needs. Also, something is very slow about the XMLRPC communications (it takes 2-3 sec to send 4 light change commands). I'll leave that alone for now since it looks kindof cool to see the lights turn on individually. This rdf setup is similar to http://bigasterisk.com/toilet/toiletcircuit.gif, which is close to the control program we used on the toilet automation project several years ago. I have not even tried to research existing circuit vocabularies yet, because I knew going off to read even more about rdf would just delay my project further. I would like to get the URIs a lot more standard, sometime.
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