Can I use LEDs without a clock pin on a pi?

I purchased 4 meters of neopixel LEDs from adafruit. I was going to try to make my ambilight work on all HDMI devices but changed my mind. Can I use the adafruit neopixel LEDs with the data pin from the pi?

Thanks. Would I need to get a 3.3 to 5v converter?

I think I'll play it safe and get the adafruit brand one.

So all I need is to download the latest version of osmc and Hyperion and enable that in osmc. Then what is the default data pin on the pi for the output?

Thank you for the start!