11/24/2023 0 Comments Arduino led matrix max7219![]() Int delay_time = 20 // Time in milliseconds a pixel is on. LedMatrixSPI lm = LedMatrixSPI(DISP_ROWS, DISP_COLS) īool keepLedsOn = true // Whether LEDs stay on or turn on then off. * the second is the number of 8x8 display columns. * The first parameter is the number of 8x8 display rows, * Tests each pixel by turning each on then off (optional).Ĭonst byte DISP_ROWS = 4 // Number of 8x8 display rowsĬonst byte DISP_COLS = 8 // Number of 8x8 display columnsĬonst byte LED_ROWS = DISP_ROWS * 8 // Number of LED rowsĬonst byte LED_COLS = DISP_COLS * 8 // Number of LED columns It's a pixel test that turns each pixel on, and optionally off, to check if they're working properly. Here's one of the example sketches I wrote but haven't uploaded yet. I'm also sure there are much better, more efficient ways to have written the functions, so welcome any help, advice or critiques.Īnyway, I hope someone can find it useful! Enjoy I've used the library quite extensively, but I'm sure there are still several bugs I am not aware of.
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