Squid Games Doll build using Arduino UNO

1/// CodeMakesItGo Dec 2021
2
3#include <DFPlayerMini_Fast.h>
4#include  <FireTimer.h>
5#include <IRremote.h>
6#include <LiquidCrystal_I2C.h>
7#include  <SoftwareSerial.h>
8#include <SR04.h>
9#include <Wire.h>
10
11/*-----( Analog  Pins )-----*/
12#define BUTTONS_IN A0
13#define SONAR_TRIG_PIN A1
14#define SONAR_ECHO_PIN  A2
15#define MOTION_IN A3
16
17/*-----( Digital Pins )-----*/
18#define LED_BLUE  13
19#define LED_GREEN 12
20#define LED_RED 11
21#define SEGMENT_DATA 10 // DS
22#define  SEGMENT_CLOCK 9 // SHCP
23#define SEGMENT_LATCH 8 // STCP
24#define SEGMENT_1_OUT  7
25#define SEGMENT_2_OUT 6
26#define SEGMENT_3_OUT 5
27#define IR_DIGITAL_IN  4 // IR Remote
28#define SERVO_OUT 3
29#define DFPLAYER_BUSY_IN 2
30
31/*-----(  Configuration )-----*/
32#define TIMER_FREQUENCY 2000
33#define TIMER_MATCH (int)(((16E+6)  / (TIMER_FREQUENCY * 64.0)) - 1)
34#define TIMER_2MS ((TIMER_FREQUENCY / 1000)  * 2)
35#define VOLUME 30                    // 0-30
36#define BETTER_HURRY_S 5             // play clip at 5 seconds left
37#define WIN_PROXIMITY_CM 50          //  cm distance for winner
38#define CLOSE_PROXIMITY_CM 100       // cm distance for  close to winning
39#define GREEN_LIGHT_MS 3000          // 3 seconds on for green  light
40#define RED_LIGHT_MS 5000            // 5 seconds on for green light
41#define  WAIT_FOR_STOP_MOTION_MS 5000 // 5 seconds to wait for motion detection to stop
42
43/*-----(  Global Variables )-----*/
44static unsigned int timer_1000ms = 0;
45static unsigned  int timer_2ms = 0;
46static unsigned char digit = 0;      // digit for 4 segment  display
47static int countDown = 60;           // Start 1 minute countdown on startup
48static  const int sonarVariance = 10; // detect movement if greater than this
49static  bool gameInPlay = false;
50static bool faceTree = false;
51static bool remotePlay  = false;
52
53//                                 0 ,   1,   2,   3,   4,   5,   6,   7,   8,   9,   A,   B,   C,   D,   E,   F, NULL
54const unsigned char numbers[]  = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x77, 0x7c, 0x39,  0x5e, 0x79, 0x71, 0x00};
55
56const char *MenuItems[] = {"Language", "Play  Time", "Play Type"};
57typedef enum
58{
59  LANGUAGE,
60  PLAYTIME,
61  PLAYTYPE,
62  MENUITEM_COUNT
63} MenuItemTypes;
64
65const char *Languages[] = {"English",  "Korean"};
66typedef enum
67{
68  ENGLISH,
69  KOREAN,
70  LANUAGE_COUNT
71}  LanguageTypes;
72static int language = 0;
73
74const char *PlayTime[] = {"300",  "240", "180", "120", "60", "30", "15"};
75typedef enum
76{
77  PT300,
78  PT240,
79  PT180,
80  PT120,
81  PT60,
82  PT30,
83  PT15,
84  PLAYTIME_COUNT
85}  PlayTimeTypes;
86const int playTimes[] = {300, 240, 180, 120, 60, 30, 15};
87static  int playTime = 0;
88
89const char *PlayType[] = {"Auto", "Remote"};
90typedef  enum
91{
92  AUTO,
93  REMOTE,
94  PLAYTYPE_COUNT
95} PlayTypeTypes;
96static  int playType = 0;
97
98typedef enum
99{
100  BLACK,
101  RED,
102  GREEN,
103  BLUE,
104  WHITE,
105  YELLOW,
106  PURPLE
107} EyeColors;
108EyeColors eyeColor  = BLACK;
109
110typedef enum
111{
112  WARMUP,
113  WAIT,
114  READY,
115  GREENLIGHT,
116  REDLIGHT,
117  WIN,
118  LOSE
119} GameStates;
120static GameStates gameState  = WARMUP;
121
122/*-----( Class Objects )-----*/
123FireTimer task_50ms;
124FireTimer  task_250ms;
125DFPlayerMini_Fast dfPlayer;
126SR04 sonar = SR04(SONAR_ECHO_PIN,  SONAR_TRIG_PIN);
127IRrecv irRecv(IR_DIGITAL_IN);
128decode_results irResults;
129LiquidCrystal_I2C  lcdDisplay(0x27, 16, 2); // 16x2 LCD display
130
131/*-----( Functions )-----*/
132void  translateIR() // takes action based on IR code received
133{
134  switch (irResults.value)
135  {
136  case 0xFFA25D:
137    Serial.println("POWER");
138    if (gameState ==  WAIT)
139    {
140      gameInPlay = true;
141    }
142    break;
143  case 0xFFE21D:
144    Serial.println("FUNC/STOP");
145    break;
146  case 0xFF629D:
147    Serial.println("VOL+");
148    break;
149  case 0xFF22DD:
150    Serial.println("FAST BACK");
151    break;
152  case 0xFF02FD:
153    Serial.println("PAUSE");
154    remotePlay = !remotePlay;
155    break;
156  case 0xFFC23D:
157    Serial.println("FAST FORWARD");
158    break;
159  case 0xFFE01F:
160    Serial.println("DOWN");
161    break;
162  case 0xFFA857:
163    Serial.println("VOL-");
164    break;
165  case 0xFF906F:
166    Serial.println("UP");
167    break;
168  case 0xFF9867:
169    Serial.println("EQ");
170    break;
171  case 0xFFB04F:
172    Serial.println("ST/REPT");
173    break;
174  case 0xFF6897:
175    Serial.println("0");
176    break;
177  case 0xFF30CF:
178    Serial.println("1");
179    break;
180  case 0xFF18E7:
181    Serial.println("2");
182    break;
183  case  0xFF7A85:
184    Serial.println("3");
185    break;
186  case 0xFF10EF:
187    Serial.println("4");
188    break;
189  case 0xFF38C7:
190    Serial.println("5");
191    break;
192  case  0xFF5AA5:
193    Serial.println("6");
194    break;
195  case 0xFF42BD:
196    Serial.println("7");
197    break;
198  case 0xFF4AB5:
199    Serial.println("8");
200    break;
201  case  0xFF52AD:
202    Serial.println("9");
203    break;
204  case 0xFFFFFFFF:
205    Serial.println(" REPEAT");
206    break;
207
208  default:
209    Serial.println("  other button   ");
210  }
211}
212
213bool isPlayingSound()
214{
215  return (digitalRead(DFPLAYER_BUSY_IN)  == LOW);
216}
217
218void updateTimeDisplay(unsigned char digit, unsigned char num)
219{
220  digitalWrite(SEGMENT_LATCH, LOW);
221  shiftOut(SEGMENT_DATA, SEGMENT_CLOCK, MSBFIRST,  numbers[num]);
222
223  // Active LOW
224  digitalWrite(SEGMENT_1_OUT, digit ==  1 ? LOW : HIGH);
225  digitalWrite(SEGMENT_2_OUT, digit == 2 ? LOW : HIGH);
226  digitalWrite(SEGMENT_3_OUT, digit == 3 ? LOW : HIGH);
227
228  digitalWrite(SEGMENT_LATCH,  HIGH);
229}
230
231void updateServoPosition()
232{
233  static int servoPulseCount  = 0;
234  static bool lastPosition = false;
235
236  // Only get new value at start  of period
237  if (servoPulseCount == 0)
238    lastPosition = faceTree;
239
240  if (!lastPosition) // 180 degrees
241  {
242    digitalWrite(SERVO_OUT, servoPulseCount  < 5 ? HIGH : LOW);
243  }
244  else // 0 degrees
245  {
246    digitalWrite(SERVO_OUT,  servoPulseCount < 1 ? HIGH : LOW);
247  }
248
249  servoPulseCount = (servoPulseCount  + 1) % 40; // 20ms period
250}
251
252void updateMenuDisplay(const int button)
253{
254  static int menuItem = 0;
255  static int menuOption = 0;
256  switch (button)
257  {
258  case 1:
259    menuItem = (menuItem + 1) % MENUITEM_COUNT;
260    if (menuItem  == LANGUAGE)
261    {
262      menuOption = language;
263    }
264    else if (menuItem  == PLAYTIME)
265    {
266      menuOption = playTime;
267    }
268    else if (menuItem  == PLAYTYPE)
269    {
270      menuOption = playType;
271    }
272    else
273    {
274      menuOption = 0;
275    }
276    break;
277  case 2:
278    if (menuItem ==  LANGUAGE)
279    {
280      menuOption = (menuOption + 1) % LANUAGE_COUNT;
281      language  = menuOption;
282    }
283    else if (menuItem == PLAYTIME)
284    {
285      menuOption  = (menuOption + 1) % PLAYTIME_COUNT;
286      playTime = menuOption;
287    }
288    else if (menuItem == PLAYTYPE)
289    {
290      menuOption = (menuOption +  1) % PLAYTYPE_COUNT;
291      playType = menuOption;
292    }
293    else
294    {
295      menuOption = 0;
296    }
297    break;
298  case 3:
299    if (gameState ==  WAIT)
300    {
301      gameInPlay = true;
302    }
303    if (gameState == GREENLIGHT  || gameState == REDLIGHT)
304    {
305      gameInPlay = false;
306    }
307  default:
308    break;
309  }
310
311  if (menuOption != -1)
312  {
313    lcdDisplay.clear();
314
315    lcdDisplay.setCursor(0, 0);
316    lcdDisplay.print(MenuItems[menuItem]);
317    lcdDisplay.setCursor(0, 1);
318
319    if (menuItem == LANGUAGE)
320    {
321      lcdDisplay.print(Languages[menuOption]);
322    }
323    else if (menuItem  == PLAYTIME)
324    {
325      lcdDisplay.print(PlayTime[menuOption]);
326    }
327    else if (menuItem == PLAYTYPE)
328    {
329      lcdDisplay.print(PlayType[menuOption]);
330    }
331    else
332    {
333      lcdDisplay.print("unknown option");
334    }
335  }
336  else
337  {
338    menuItem = 0;
339    menuOption = 0;
340  }
341}
342
343void  handleButtons()
344{
345  static int buttonPressed = 0;
346  int value = analogRead(BUTTONS_IN);
347
348  if (value < 600) // buttons released
349  {
350    if (buttonPressed != 0)
351      updateMenuDisplay(buttonPressed);
352
353    buttonPressed = 0;
354    return;
355  }
356  else if (value < 700)
357  {
358    Serial.println("button 1");
359    buttonPressed  = 1;
360  }
361  else if (value < 900)
362  {
363    Serial.println("button 2");
364    buttonPressed = 2;
365  }
366  else if (value < 1000)
367  {
368    Serial.println("button  3");
369    buttonPressed = 3;
370  }
371  else
372  {
373    Serial.println(value);
374    buttonPressed = 0;
375  }
376}
377
378static int lastSonarValue = 0;
379void  handleSonar()
380{
381  int value = sonar.Distance();
382
383  if (value > lastSonarValue  + sonarVariance ||
384      value < lastSonarValue - sonarVariance)
385  {
386    Serial.println(value);
387    lastSonarValue = value;
388  }
389}
390
391static int lastMotion = 0;
392void  handleMotion()
393{
394  int value = digitalRead(MOTION_IN);
395
396  if (value  != lastMotion)
397  {
398    lastMotion = value;
399  }
400
401  if (lastMotion)
402    Serial.println("Motion Detected");
403}
404
405void handleLeds()
406{
407  digitalWrite(LED_RED, eyeColor == RED || eyeColor == WHITE || eyeColor == PURPLE  || eyeColor == YELLOW ? HIGH : LOW);
408  digitalWrite(LED_GREEN, eyeColor == GREEN  || eyeColor == WHITE || eyeColor == YELLOW ? HIGH : LOW);
409  digitalWrite(LED_BLUE,  eyeColor == BLUE || eyeColor == WHITE || eyeColor == PURPLE ? HIGH : LOW);
410}
411
412void  handleRemote()
413{
414  // have we received an IR signal?
415  if (irRecv.decode(&irResults))
416  {
417    translateIR();
418    irRecv.resume(); // receive the next value
419  }
420}
421
422// Timer 1 ISR
423ISR(TIMER1_COMPA_vect)
424{
425  // Allow this  ISR to be interrupted
426  sei();
427
428  updateServoPosition();
429
430  if (timer_1000ms++  == TIMER_FREQUENCY)
431  {
432    timer_1000ms = 0;
433    countDown--;
434    if  (countDown < 0)
435    {
436      countDown = 0;
437    }
438  }
439
440  if (timer_2ms++  == TIMER_2MS)
441  {
442    timer_2ms = 0;
443    if (digit == 0)
444      updateTimeDisplay(1,  countDown % 10);
445    if (digit == 1)
446      updateTimeDisplay(2, (countDown  / 10) % 10);
447    if (digit == 2)
448      updateTimeDisplay(3, (countDown / 100)  % 10);
449    if (digit == 3)
450      updateTimeDisplay(4, 16);
451
452    digit  = ((digit + 1) % 4);
453  }
454}
455
456void playGame()
457{
458  static int sequence  = 0;
459  static long internalTimer = millis();
460  static bool closerClipPlayed  = false;
461  static bool hurryUpClipPlayed = false;
462  static int captureDistance  = 0;
463  long currentTimer = internalTimer;
464
465  if(isPlayingSound()) return;
466
467  if (gameState == WARMUP)
468  {
469    // power up sound
470    if (sequence ==  0)
471    {
472      Serial.println("Warming Up");
473      dfPlayer.playFolder(1,  1);
474      faceTree = false;
475      eyeColor = YELLOW;
476      sequence++;
477    }
478
479    // laugh at 30
480    else if (sequence == 1 && countDown <= 30)
481    {
482      Serial.println("Laughing");
483      dfPlayer.playFolder(1, 2);
484      faceTree = true;
485      sequence++;
486    }
487
488    else if (sequence  == 2 && countDown <= 10)
489    {
490      Serial.println("Almost ready");
491      dfPlayer.playFolder(1, 3);
492      sequence++;
493    }
494
495    else if  (sequence == 3 && countDown == 0)
496    {
497      Serial.println("All ready,  lets play");
498      dfPlayer.playFolder(1, 4);
499      faceTree = false;
500      sequence = 0;
501      gameState = WAIT;
502      gameInPlay = false;
503    }
504  }
505
506  else if (gameState == WAIT)
507  {
508    currentTimer = millis();
509
510    if (gameInPlay)
511    {
512      gameState = READY;
513      remotePlay = false;
514      sequence = 0;
515    }
516
517    // Every 30 seconds
518    else if (currentTimer  - internalTimer > 30000 ||
519             sequence == 0)
520    {
521      internalTimer  = millis();
522
523      if(playType == AUTO)
524      {
525        // press the  go button when you are ready
526        Serial.println("Press the go button when  you are ready");
527        dfPlayer.playFolder(1, 5);
528      }
529      else
530      {
531        Serial.println("Press the power button on the remote when you  are ready");
532        dfPlayer.playFolder(1, 6);
533      }
534
535      // eyes  are blue
536      eyeColor = BLUE;
537
538      // facing players
539      faceTree  = false;
540
541      gameInPlay = false;
542
543      sequence++;
544    }
545  }
546
547  else if (gameState == READY)
548  {
549    currentTimer = millis();
550
551    if (sequence == 0)
552    {
553      // get in position, game will start in  10 seconds
554      Serial.println("Get in position.");
555      dfPlayer.playFolder(1,  7);
556      countDown = 10;
557
558      // eyes are green
559      eyeColor =  WHITE;
560
561      // facing players
562      faceTree = false;
563
564      sequence++;
565
566      internalTimer = millis();
567    }
568    else if (sequence == 1)
569    {
570      if (playType == REMOTE)
571      {
572        if (remotePlay)
573          sequence++;
574      }
575      else
576        sequence++;
577    }
578    else if (sequence ==  2)
579    {
580      // at 0 seconds, here we go!
581      if (countDown == 0)
582      {
583        countDown = playTimes[playTime];
584        Serial.print("play  time set to ");
585        Serial.println(countDown);
586
587        Serial.println("Here  we go!");
588        dfPlayer.playFolder(1, 8);
589        gameState = GREENLIGHT;
590        sequence = 0;
591      }
592    }
593  }
594
595  else if (gameState ==  GREENLIGHT)
596  {
597    currentTimer = millis();
598
599    if (sequence == 0)
600    {
601      // eyes are green
602      eyeColor = GREEN;
603
604      // play  green light
605      Serial.println("Green Light!");
606      dfPlayer.playFolder(1,  9);
607      
608      sequence++;
609    }
610
611    else if(sequence == 1)
612    {
613      // play motor sound
614      dfPlayer.playFolder(1, 19);
615      
616      // facing tree
617      faceTree = true;
618
619      sequence++;
620
621      internalTimer = millis();
622    }
623
624    else if (sequence == 2)
625    {
626      // wait 3 seconds or until remote
627      // switch to red light
628      if (playType == AUTO && currentTimer - internalTimer > GREEN_LIGHT_MS)
629      {
630        sequence = 0;
631        gameState = REDLIGHT;
632      }
633      else if (playType == REMOTE && remotePlay == false)
634      {
635        sequence  = 0;
636        gameState = REDLIGHT;
637      }
638      else
639      {
640        //  look for winner button or distance
641        if (gameInPlay == false ||
642            lastSonarValue  < WIN_PROXIMITY_CM)
643        {
644          sequence = 0;
645          gameState  = WIN;
646        }
647
648        else if (countDown <= 0)
649        {
650          Serial.println("Out  of Time");
651          dfPlayer.playFolder(1, 16);
652          sequence = 0;
653          gameState = LOSE;
654        }
655        
656        // at 2 meters play  "your getting closer"
657        else if (lastSonarValue < CLOSE_PROXIMITY_CM  &&
658            closerClipPlayed == false)
659        {
660          Serial.println("Getting  closer!");
661          dfPlayer.playFolder(1, 11);
662          closerClipPlayed  = true;
663        }
664
665        // if less than 5 seconds play better hurry
666        else if (countDown <= BETTER_HURRY_S &&
667            hurryUpClipPlayed  == false)
668        {
669          Serial.println("Better Hurry");
670          dfPlayer.playFolder(1,  12);
671          hurryUpClipPlayed = true;
672        }
673      }
674    }
675  }
676
677  else if (gameState == REDLIGHT)
678  {
679    currentTimer = millis();
680
681    if (sequence == 0)
682    {
683      // eyes are red
684      eyeColor = RED;
685
686      Serial.println("Red Light!");
687
688      if(language == ENGLISH)
689      {
690        // play red light English 
691        dfPlayer.playFolder(1, 10);
692      }
693      else
694      {
695        // play red light Korean  
696        dfPlayer.playFolder(1,  18);
697      }
698
699      sequence++;
700    }
701
702    else if(sequence ==  1)
703    {
704      // play motor sound
705      dfPlayer.playFolder(1, 19);
706
707      // facing players
708      faceTree = false;
709
710      // Save current  distance
711      captureDistance = lastSonarValue;
712
713      sequence++;
714
715      internalTimer = millis();
716    }
717
718    else if (sequence == 2)
719    {
720      //wait for motion to settle
721      if (lastMotion == 0 || (currentTimer  - internalTimer) > WAIT_FOR_STOP_MOTION_MS)
722      {
723        internalTimer  = millis();
724        sequence++;
725        Serial.println("Done settling");
726      }
727      Serial.println("Waiting to settle");
728    }
729
730    else  if (sequence == 3)
731    {
732      // back to green after 5 seconds
733      if  (playType == AUTO && currentTimer - internalTimer > RED_LIGHT_MS)
734      {
735        sequence = 0;
736        gameState = GREENLIGHT;
737      }
738      else  if (playType == REMOTE && remotePlay == true)
739      {
740        sequence = 0;
741        gameState = GREENLIGHT;
742      }
743
744      else
745      {
746        //  can't push the button while red light
747        // detect movement
748        //  detect distance change
749        if (gameInPlay == false ||
750            lastMotion  == 1 ||
751            lastSonarValue < captureDistance)
752        {
753          Serial.println("Movement  detected!");
754          dfPlayer.playFolder(1, 15);
755          sequence = 0;
756          gameState = LOSE;
757        }
758
759        if (countDown == 0)
760        {
761          Serial.println("Out of time");
762          dfPlayer.playFolder(1,  16);
763          sequence = 0;
764          gameState = LOSE;
765        }
766      }
767    }
768  }
769
770  else if (gameState == WIN)
771  {
772    if (sequence  == 0)
773    {
774      // play winner sound
775      Serial.println("You Won!");
776      dfPlayer.playFolder(1, 13);
777
778      // eyes are white
779      eyeColor  = WHITE;
780
781      // facing players
782      faceTree = false;
783
784      sequence++;
785    }
786
787    else if (sequence == 1)
788    {
789      // wanna play again?
790      Serial.println("Play Again?");
791      dfPlayer.playFolder(1, 17);
792
793      gameInPlay = false;
794      countDown = 0;
795
796      // go to wait
797      gameState = WAIT;
798      sequence = 0;
799    }
800  }
801
802  else if  (gameState == LOSE)
803  {
804    if (sequence == 0)
805    {
806      // sorry  better luck next time
807      Serial.println("Sorry, you lost");
808      dfPlayer.playFolder(1,  14);
809
810      // eyes are purple
811      eyeColor = PURPLE;
812
813      //  face players
814      faceTree = false;
815
816      sequence++;
817    }
818
819    else if (sequence == 1)
820    {
821      // wanna play again?
822      Serial.println("Play  Again?");
823      dfPlayer.playFolder(1, 17);
824
825      gameInPlay = false;
826      countDown = 0;
827
828      // go to wait
829      gameState = WAIT;
830      sequence  = 0;
831    }
832  }
833  else
834  {
835    //Shouldn't ever get here
836    gameState  = WARMUP;
837  }
838}
839
840void loop() /*----( LOOP: RUNS CONSTANTLY )----*/
841{
842  if (task_50ms.fire())
843  {
844    handleRemote();
845    handleButtons();
846  }
847
848  if (task_250ms.fire())
849  {
850    handleSonar();
851    handleMotion();
852    handleLeds();
853    playGame();
854
855    Serial.println(isPlayingSound());
856  }
857}
858
859// Setup Timer 1 for 2000Hz
860void setupTimer()
861{
862  cli();      //stop interrupts
863  TCCR1A = 0; // set entire TCCR1A register to 0
864  TCCR1B = 0; // same for TCCR1B
865  TCNT1 = 0;  //initialize counter value to  0
866  // set compare match register
867  OCR1A = TIMER_MATCH; // = (16*10^6) /  (2000*64) - 1 (must be <65536), 2000Hz
868  // turn on CTC mode
869  TCCR1B |= (1  << WGM12);
870  // Set CS11 and CS10 bits for 64 prescaler
871  TCCR1B |= (1 <<  CS11) | (1 << CS10);
872  // enable timer compare interrupt
873  TIMSK1 |= (1 <<  OCIE1A);
874  sei(); //allow interrupts
875}
876
877void setup()
878{
879  Serial.begin(9600);
880
881  pinMode(MOTION_IN, INPUT);
882  pinMode(BUTTONS_IN, INPUT);
883  pinMode(DFPLAYER_BUSY_IN,  INPUT);
884
885  pinMode(SERVO_OUT, OUTPUT);
886  pinMode(LED_RED, OUTPUT);
887  pinMode(LED_GREEN, OUTPUT);
888  pinMode(LED_BLUE, OUTPUT);
889
890  pinMode(SEGMENT_LATCH,  OUTPUT);
891  pinMode(SEGMENT_CLOCK, OUTPUT);
892  pinMode(SEGMENT_DATA, OUTPUT);
893
894  pinMode(SEGMENT_1_OUT, OUTPUT);
895  pinMode(SEGMENT_2_OUT, OUTPUT);
896  pinMode(SEGMENT_3_OUT,  OUTPUT);
897
898  irRecv.enableIRIn();     // Start the receiver
899  dfPlayer.begin(Serial);  // Use the standard serial stream for DfPlayer
900  dfPlayer.volume(VOLUME); //  Set the DfPlay volume
901  lcdDisplay.init();       // initialize the lcd
902  lcdDisplay.backlight();  // Turn on backlight
903  setupTimer();            // Start the high resolution  timer ISR
904
905  // Display welcome message
906  lcdDisplay.setCursor(0, 0);
907  lcdDisplay.print("Welcome to the");
908  lcdDisplay.setCursor(0, 1);
909  lcdDisplay.print("Squid  Games!");
910
911  // short delay to display welcome screen 
912  delay(1000);
913
914  task_50ms.begin(50);   // Start the 50ms timer task
915  task_250ms.begin(250);  // Start the 250ms timer task
916}
917