andres.santos

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• MAX7219 with Matrix Leds

  @andres.santos started

  • 9 comments
  • 4,713 views

  @MrTimcakes replied
• MAX7219 with Matrix Leds

  in Interfacing • 10 years, 9 months

  

  oh yes, I was testing both, with and without the save(), but in both cases behaves the same, I even upgraded the firmware

  greetings

• MAX7219 with Matrix Leds

  in Interfacing • 10 years, 9 months

  

  so I tested the same matrix with the arduino and looks ok, does it mean I nead the sd card? or what is the difference of using the SD card?

• MAX7219 with Matrix Leds

  in Interfacing • 10 years, 9 months

  

  well nope, this is all it shows

  _____                 _ 
  |   __|___ ___ ___ _ _|_|___ ___ 
  |   __|_ -| . |  _| | | |   | . |
  |_____|___|  _|_| |___|_|_|_|___|
            |_| http://espruino.com
   1v56 Copyright 2014 G.Williams
  >echo(0);
  =undefined
  Erasing Flash.....................
  Programming 36000 Bytes.......................................
  Checking...
  Done!
  >reset();
  =undefined
  

  greetings

• MAX7219 with Matrix Leds

  in Interfacing • 10 years, 9 months

  

  Hello guys, I recently bought from ebay two Matrix Leds based on the Max7219, when I connect them to the espruino it powers everything up and then using the web IDE I send this code to the espruino:

  SPI2.setup({mosi:B15, sck:B13});
  var disp = require("MAX7219").connect(SPI2,B14);
  
  
  setTimeout(function() {
    disp.raw([1,2,4,8,16,32,64,128]); // you can set the LEDs directly
  }, 1000);
  
  setTimeout(function() {
    var n = 0;
    setInterval(function() {
      disp.set(n++); // it can display integers
      disp.intensity(0.5+0.5*Math.sin(n*0.2)); // you set set intensity
    }, 100);
  }, 2000);
  

  But nothing happens, any idea?