So you never used the Arduino software to select what board/port you’re using? – NO
Arduino software <— Is it possible that this after is interfering with it
I have seen other people have a conflict but that was with a real DMD But I have no idea what they did to Solve their problem
Try / Check this
http://vpuniverse.com/forums/topic/2180-addressable-rgbs/?do=findComment&comment=41037
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