bogdan: Welcome aboard @ctrlfreq! This project is something else. I like the look of the main board, curious what all is going on there? Is it possible to use alternative light sources? IE, sit around in a train station and try to "capture" the passing lights from the train? Or does the source have to be quite close up? Possible to build some kind of app to have participants in the crowd interact with your rig somehow (Bluetooth, etc)?The drum bit is interesting.What parts of this are you working on currently? Thank you for sharing, curious to see/hear more updates.