@hek Pretty familiar with NTP/NTPD, but I'm doubtful that I can get a response time in milliseconds for activating the program. It will probably take a second or two. That's ok to begin some sort of flashing sequence by clicking a single button, but the colorpicker sends messages nonstop while moving around the wheel. I've seen those messages get queued and take many seconds to catch up after color selection has stopped. As quick as it is, it's just not quick enough! Then there is the precision. I wonder how well 13 devices can be synchronized on time? Milliseconds in difference will cause patterns to break, of course.