I have seen this done in at least one youtube video and I don’t know if they were using Traktor so I don’t know if it’s even possible. Essentially they mapped the top row of say an APC20/40 or a launchpad tohave the first light light up with say beat 1 and then in time it would move to button/light 2,3,4,5 etc.. I can’t find the video to show you I wish I had saved it. If anyone has any idea about what I’m talking about let me know. It would be a fun little project for my intro to computers class. I have nothing else to do in there except troll the forums.
Yul mapped this on his S4. <-link
Read the recent blog post about mapping LEDs <-link
and it will explain how to map the leds.
To have them go in sequence you have to figure out the value range. Yul’s is in the thread linked above.