HCDotMatrix Arduino library for 8x8 LED dot matrix module - forum.hobbycomponents.com
OPEN SMART 0.8 inch 0.8" 8 * 24 Cascadable Red LED Dot Matrix Display Module with SPI interface for Arduino|Industrial Computer & Accessories| - AliExpress
Building an LED Matrix with Arduino, Powered by CUI Supplies | CUI Inc
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Overview | 32x16 and 32x32 RGB LED Matrix | Adafruit Learning System
LED dot matrix display control • Wolles Elektronikkiste