which 8x8 green dot matrix LED to buy?

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i looking build scrolling text project using 8x8 dot matrix leds. want bright green leds https://www.youtube.com/watch?feature=player_detailpage&v=9uzzjubizla#t=32. have recommendations?

if using max7219 driver chip video seems make sure matrix 'common cathode'. come in different sizes (60x60mm, 38x38mm , maybe others) pick size , maybe backboards contain max7219 , components, save lot of wires.


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