SmartLED Shield (V4), Teensy 3.2, 32x32 LED matrix assembly - SmartMatrix Community
32x32 RGB LED Matrix Panel - 6mm pitch : ID 1484 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
32x32 LED Matrix : 28 Steps - Instructables
Niyakr Led Matrix 32x32 Led Display Module P3 P4 P5 P6 P7.62 Indoor Smd Rgb Full Color Video Led Display Module Smd - Buy 32x32 Led Display Module,Smd Rgb Full Color Led