Amazon.com: RGB Full Color LED Matrix Panel 64x64 Pixels, 4096 Individual RGB LEDs,Adjustable Brightness,3mm Pitch, Displaying Text Colorful Image Animation Chainable Design Compatible with Arduino/Raspberry Pi : Electronics
Overview | 32x16 and 32x32 RGB LED Matrix | Adafruit Learning System
Adafruit RGB Matrix HAT + RTC for Raspberry Pi - Mini Kit : ID 2345 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits