Very cool article, Andras! Are there more images of the finished piece available in the mean time? Have you ever got around to adding the "lasers" in form of the small LEDs (what a cool idea!)?
Concerning the tracks, am I right thinking that these will NOT click into each other, that you'll have to actually glue them together to make them hold together? If so, would you care to spend a few words about how you did this?
Kösz szépen!
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