conversa_wedding.ino

#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins

LiquidCrystal lcd1(12, 11, 16, 17, 18, 19);
LiquidCrystal lcd2(12, 5, 6, 7, 8, 9);
LiquidCrystal lcds[2] = { lcd1, lcd2 };
int leds[2] = { 2, 10 };

// wedding
static String cues[48] = {
  "have kids", "doubt", "radically love", "actively love", "dont give up", "be honest",
  "assume good", "walk away", "share", "listen", "hug 10 secs", "be happy",
  "be kind", "use silence", "find joy", "employ humor", "be as christ", "respect",
  "appreciate", "talk it out", "pray", "tell the truth", "set expectations", "play fight",
  "make them laugh", "be patient", "share a vision", "visit the bathroom", "have sex", "don’t be mean",
  "choose to love",  "make mouth sounds", "comment", "dance", "be unpredictable", "make plans",
  "stay open", "change it up", "get on with it", "speak your mind", "let it go", "hold on",
  "take a risk", "keep communicating", "be creative", "make space", "remember", "answer"
};



char cue_chars[34];
int time = -1;
String cue_word = String(34);
int cue_interval = 3000;
boolean cur_user = 0;
int e;

String werd = String(34);
String remix = String(34);
boolean break_line = false;

void setup() {
  //LED - Backlight
  pinMode(leds[0], OUTPUT);
  pinMode(leds[1], OUTPUT);

  // set up the LCD's number of columns and rows:
  lcds[0].begin(16, 2);
  lcds[1].begin(16, 2);
}

void loop() {
  if (time == -1 || time >= cue_interval) {
    time = 0;
    pickCue();
    handleCueOut();
  }

  time++;
  delay(10);
}

void pickCue() {
  cur_user = !cur_user;
  cue_word = cues[random(48)];
  break_line = cue_word.indexOf(" ") != -1 && cue_word.length() > 16 ? true : false;
}

void handleCueOut() {

  // turn off both screens  - Backlight
  for (int i = 0; i < 2; i++) {
    lcds[i].noDisplay();
    digitalWrite(leds[i], LOW);
  }

  // prepare cue for display
  remixCue(cue_word, break_line, true).toCharArray(cue_chars, sizeof(cue_chars));

  // display cue
  lcds[cur_user].clear();
  delay(5);
  lcds[cur_user].print(cue_chars);
  delay(5);
  if (break_line) {
    remixCue(cue_word, true, false).toCharArray(cue_chars, sizeof(cue_chars));
    lcds[cur_user].setCursor(0, 1);
    lcds[cur_user].print(cue_chars);
    delay(5);
  }
  digitalWrite(leds[cur_user], HIGH);
  lcds[cur_user].display();


}

// This function adds padding to properly print cues that need to break over two lines.
// This might need to change based on size and spec of screens used.

String remixCue(String c, boolean db, boolean first) {
  werd = "";
  remix = "";

  if (!db)
    werd = c;
  else if (db && first)
    werd = c.substring(0, c.indexOf(" "));
  else
    werd = c.substring(c.indexOf(" ") + 1, c.length());


  if (werd.length() % 2 == 1)
    e = 1 + (15 - werd.length()) / 2;
  else
    e = (16 - werd.length()) / 2;

  for (int i = 0; i < e; i++)
    remix.concat(" ");
  remix.concat(werd);

  remix.toUpperCase();
  return remix;
}