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Adafruit RGB Matrix Shield for Arduino : ID 2601 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: SunFounder Full Color RGB LED Matrix Driver Shield + RGB Matrix Screen Compatible with Arduino : Electronics
Amazon.com: Acxico 1Pcs Full Color RGB LED Strip Driver Module Shield for Arduino UNO R3 STM32 AVR V1.0 for 5V MCU System : Electronics
Full Color RGB LED Strip Driver Module Shield for Arduino UNO R3 STM32 AVR 12V | eBay
RGB LED Arduino Shield – Renewable Energy Innovation
RGB_LED_Strip_Driver_Shield_SKU_DFR0274-DFRobot
8x8 88 RGB LED Matrix Module Driver Board + Full Color Rainbow V2.0 Mini Dot Matrix RGB LED Driver Shield for Arduino AVR: Amazon.com: Industrial & Scientific