Sorry if this is a silly 'beginner' question, but I'm still only just getting into working with the Pi.
I have a Pi Zero that I want to use to drive a module of a few WS2812 LEDs. Because the GPIO pins output is 3.3V, and the module input is 5V, I'm using a Sparkfun bi-directional logic level shifter to step the voltage up. My question is this: If I wire from the GPIO pin to the level shifter on the LV side, then the HV side of the level shifter to the LED module's data line, does the ground for the data line need to run back the level shifter (HV to LV) then to the Pi? Or can I simply wire the module's DIN ground directly back to a GND pin on the Pi? Or is something about my intended wiring plan completely off, and I need to rethink the whole thing?
I'm pretty vague on how all this will look in the end so either solution works for me, I just want to make sure I don't accidentally fry any of the components.