Amazon.com: waveshare 64x32 2048 RGB Full Color LED Matrix Panel 4mm Pitch P4 Displaying Text/Colorful Image/Animation Adjustable Brightness Chainable Design,Compatible with Arduino/Raspberry Pi : Electronics
Amazon.com: waveshare 64×64 Pixels RGB Full-Color LED Matrix Panel Display 3mm Pitch LED Module Compatible with Arduino,4096 Individual RGB LEDs,Adjustable Brightness : Electronics
Adafruit RGB Matrix Shield for Arduino : ID 2601 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: waveshare 64x32 2048 RGB Full Color LED Matrix Panel 4mm Pitch P4 Displaying Text/Colorful Image/Animation Adjustable Brightness Chainable Design,Compatible with Arduino/Raspberry Pi : Electronics
64x32 RGB LED Matrix - 3mm pitch : ID 2279 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Running a 32x64 RGB LED Panel with only an Arduino Nano | Arduino Project Hub