Hi everyone,
Here is my setup :
Teensy 3.2 + octo adapter board + ws2812b led strip (30 led for now) with a power supplie 5v 20A.
Teensy is powered by usb, and the led with the power supplie.
My wiring is the following :
5V+PSU --> 5v+ Led strip
5V- PSU --> GND Led strip & Ground...