I've been driving some neopixels from my arduino uno and I've always used pin 6 on the arduino since all the examples that I came across always used that pin. I now am at a point where I need to drive some additional neopixels through another pin. Are there only certain I/O pins on the arduino uno that can drive neopixels? I see that the board shows a special symbol for certain I/O pins indicating that they can drive PWM output, so I'm concerned that the neopixels might need PWN and t herefore be limited to those particular pins.
I've used other pins, not sure which ones, they worked.
Why not try some as an experiment?
Is your code doing analog writes on pin 6 at all? If so, you need PWM. If its all digital writes, then no.
Delta_G:
Does a neopixel require PWM?
No.
Any pin will do.