Full Color RGB Flexible LED Matrix Panel 8x32 256 Pixels Individually Addressable Programmable LED Display Works with Raspberry pi or Arduino

Good luck using this with a raspberry pi. Theres zero documentation for how this works, what tech to use to support it. I reached out to the sellers who promptly ignored me. The one mention for Adafruit NeoPixel library is Arduino only so good luck to the pi-heads out there. Do yourself a favor and don't buy this unless you like headaches.

I found out that the all the 5V and GND connections are common so any one of them can be used. The DIN connection works properly with an Arduino digital pin. For a demo download the Adafruit_NeoPixel library from GITHUB and run the strandtest example.