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#include <avr/power.h> #include <TinyWireM.h> #include "Adafruit_LEDBackpack.h" #include "Adafruit_GFX.h" Adafruit_AlphaNum4 alpha4 = Adafruit_AlphaNum4(); char *message = "**3D** 4 LIFE*** "; void setup() { if (F_CPU == 16000000) clock_prescale_set(clock_div_1); alpha4.begin(0x70); // pass in the address alpha4.writeDisplay(); // clear display } void loop() { // just display 4 letters alpha4.writeDigitAscii(0, 'H'); alpha4.writeDigitAscii(1, 'A'); alpha4.writeDigitAscii(2, 'C'); alpha4.writeDigitAscii(3, 'K'); alpha4.writeDisplay(); delay(1000); // hold for 1 second // scroll the message above! for (uint8_t i=0; i<strlen(message)-4; i++) { alpha4.writeDigitAscii(0, message[i]); alpha4.writeDigitAscii(1, message[i+1]); alpha4.writeDigitAscii(2, message[i+2]); alpha4.writeDigitAscii(3, message[i+3]); alpha4.writeDisplay(); delay(500); } }