max7219

  1. Voltage Levels

    So, I decided to start an 8x8 LED matrix project using a MAX7219 and PIC18F4550. My issue I've run into is that my the LED matrix I found is a max 2.7 forward voltage drop. The MAX7219 outputs around V+ -1.The minimum amount for V+ is 4V so this will put me near the 2.7V maximum of the matrix...
  2. Help Please! 8x8 RGB LED Matrix with MAX 7219 and Arduino

    Hello all, I'm in the beginning stages of a project and am just learning how to use an Arduino Uno with a MAX7219 driver with an 8x8 LED RGB Matrix. I'm using someone's source code to just get a basic understanding of how to put all these pieces together and will then modify it as I need to...
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