Code: Select all
#include <Wire.h>
#include <Adafruit_GFX.h>
#include "Adafruit_LEDBackpack.h"
Adafruit_AlphaNum4 alpha4 = Adafruit_AlphaNum4();
void setup()
{
alpha4.begin(0x70);
alpha4.writeDigitAscii(0, 'A');
alpha4.writeDigitAscii(1, 'B');
alpha4.writeDigitAscii(2, 'C');
alpha4.writeDigitAscii(3, 'D');
alpha4.writeDisplay();
}
void loop()
{
delay(500); // wait for a second
}