56 lines
1.5 KiB
Plaintext
56 lines
1.5 KiB
Plaintext
#include <SPI.h>
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#include <Adafruit_GFX.h>
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#include <Max72xxPanel.h>
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int pinCS = 10; // Attach CS to this pin, DIN to MOSI and CLK to SCK (cf http://arduino.cc/en/Reference/SPI )
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int numberOfHorizontalDisplays = 4;
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int numberOfVerticalDisplays = 1;
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Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);
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String tape = "Arduino";
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int wait = 20; // In milliseconds
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int spacer = 1;
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int width = 5 + spacer; // The font width is 5 pixels
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void setup() {
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matrix.setIntensity(7); // Use a value between 0 and 15 for brightness
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// Adjust to your own needs
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// matrix.setPosition(0, 0, 0); // The first display is at <0, 0>
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// matrix.setPosition(1, 1, 0); // The second display is at <1, 0>
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// matrix.setPosition(2, 2, 0); // The third display is at <2, 0>
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// matrix.setPosition(3, 3, 0); // And the last display is at <3, 0>
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// ...
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// matrix.setRotation(0, 2); // The first display is position upside down
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// matrix.setRotation(3, 2); // The same hold for the last display
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}
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void loop() {
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for ( int i = 0 ; i < width * tape.length() + matrix.width() - 1 - spacer; i++ ) {
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matrix.fillScreen(LOW);
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int letter = i / width;
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int x = (matrix.width() - 1) - i % width;
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int y = (matrix.height() - 8) / 2; // center the text vertically
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while ( x + width - spacer >= 0 && letter >= 0 ) {
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if ( letter < tape.length() ) {
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matrix.drawChar(x, y, tape[letter], HIGH, LOW, 1);
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}
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letter--;
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x -= width;
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}
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matrix.write(); // Send bitmap to display
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delay(wait);
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}
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}
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