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@futureshocked
Created September 7, 2021 08:10
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Test Peter's four 8x8 LED matrix with Arduino PRo Mini PCB
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Max72xxPanel.h>
int pinCS = 10; // Attach CS to this pin, DIN to MOSI and CLK to SCK (cf http://arduino.cc/en/Reference/SPI )
int numberOfHorizontalDisplays = 4;
int numberOfVerticalDisplays = 1;
byte button_1 = 5;
byte button_2 = 4;
Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);
String tape = "Arduino";
int wait = 20; // In milliseconds
int spacer = 1;
int width = 5 + spacer; // The font width is 5 pixels
int intensity = 7;
void setup() {
pinMode(button_1, INPUT);
pinMode(button_2, INPUT);
matrix.setIntensity(intensity); // Use a value between 0 and 15 for brightness
}
void loop() {
for ( int i = 0 ; i < width * tape.length() + matrix.width() - 1 - spacer; i++ ) {
matrix.fillScreen(LOW);
int letter = i / width;
int x = (matrix.width() - 1) - i % width;
int y = (matrix.height() - 8) / 2; // center the text vertically
while ( x + width - spacer >= 0 && letter >= 0 ) {
if ( letter < tape.length() ) {
matrix.drawChar(x, y, tape[letter], HIGH, LOW, 1);
}
letter--;
x -= width;
}
matrix.write(); // Send bitmap to display
if (digitalRead(button_1) == HIGH)
{
Serial.println("HI");
intensity = intensity + 1;
if (intensity == 16)
intensity = 15;
matrix.setIntensity(intensity);
}
else
Serial.println("LOW");
if (digitalRead(button_2) == HIGH)
{
Serial.println("HI");
intensity = intensity - 1;
if (intensity == -1)
intensity = 0;
matrix.setIntensity(intensity);
}
else
Serial.println("LOW");
delay(wait);
}
}
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