godot_machine.ino

/*
  pollux labs, 2020
*/

#include <LiquidCrystal.h>
#include <Wire.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int noisePin = 7;

boolean noise = false;
int quote = 0;
byte x = 3;

char *estragonStrings[] = {"PUT",
                           "YOUR",
                           "QUOTES",
                           "HERE"
                          };

void setup() {

  Wire.begin(8);
  Wire.onReceive(receiveEvent);

  Serial.begin(9600);

  pinMode(noisePin, INPUT);

  lcd.begin(16, 2);

}

void loop() {

  noise = digitalRead(noisePin);

  if (noise && x % 2 == 0) { // && x%2 == 0 is even / odd for the other Arduino

    quote = random(66); //number is depending on how many quotes you have!

    switch (quote) {
      case 0: //fill in more cases depending on your number of quotes
        displayText(quote);
        break;

      case 1:
        displayText(quote);
        break;

      case 2:
        displayText(quote);
        break;

      case 3:
        displayText(quote);
        break;

      case 4:
        displayText(quote);
        break;
    }
  } else if (!noise) {
    lcd.clear();
  }

}

void sendByte() {
  x++;
  Wire.beginTransmission(8);
  //Wire.write("x is ");
  Wire.write(x);        
  Wire.endTransmission(); 
}

void receiveEvent(int howMany) {
  while (1 < Wire.available()) { 
    int c = Wire.read();
    Serial.print(c); 
  }
  x = Wire.read(); 
  Serial.println(x);
}

void displayText(int noText) {
  lcd.setCursor(0, 1);
  delay(1000);

  if (strlen(estragonStrings[noText]) > 16) {
    lcd.print(estragonStrings[noText]);
    delay(1000);
    for (int positionCounter = 0; positionCounter < strlen(estragonStrings[noText] + 16); positionCounter++) {
      // scroll one position left:
      lcd.scrollDisplayLeft();
      // wait a bit:
      delay(350);
    }
  } else {
    lcd.print(estragonStrings[noText]);
  }

  delay(3000);
  lcd.clear();
  sendByte();
}