Hey, I was having the same problem, 1 line sketch works fine, but with 2, nothing. After some reading I think is a voltage problem. The 3.3v signal from teensy can't drive the 5v for two strips, 1 yes but 2 too much. Not sure. I bought that octoW2... thing adaptor that ups de signal to 5v to see if ...
Hi everyone, I swear I used the search but to no success in solving my problem. I was following the madlab tutorial and got the "FastLED-serial-only-single-line.ino" working just fine. But when I load the FastLED-serial-only-two-lines.ino to my Teensy 3.6 I can't even none of the strips to do nothin...