INTERACTIVE LED WALL & CLOCK! (Arduino Project)

Jan 29, 2025

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final code

cpp

code for the project

1#include <Adafruit_NeoPixel.h>
2#include <RtcDS1302.h>
3
4ThreeWire myWire(3, 2, 4);  // IO, SCLK, CE
5RtcDS1302<ThreeWire> Rtc(myWire);
6
7int hue = 150;  // Variable to track the hue
8int hue2 = 42;  // Variable to track the hue
9
10int changeTime = 0;
11
12int bx, by = 0;
13
14int h1, h2 = 0;  // h1= hour ones, h2= hour tens (digits)
15int m1, m2 = 0;  // m1= minutes ones, m2=minutes tens
16int s = 0;       // seconds
17int dots = 0;
18int year, month, day, hours, minutes, seconds = 0;
19int shift = 0;
20int mode = 0;
21
22int brightness = 5;
23// Define shift values for each digit type
24int shifts[] = { 0, 22, 55, 77 };
25int col = 0;
26int row = 0;
27
28const int numButtons = 19;
29const int numRows = 9;         // Total number of row pins
30const int numBacklights = 19;  // Total number of row pins
31int expectedADCValues[numButtons] = { 1020, 925, 765, 612, 475, 361, 265, 190, 133, 92 };
32int threshold = 10;  // Adjusted threshold for better accuracy (test and adjust further)
33int rowPins[numRows] = { 5, 6, 7, 8, 9, 10, 11, 12, 13 };
34int backLights[numBacklights] = { 5, 10, 16, 21, 27, 32, 38, 43, 49, 54, 60, 65, 71, 76, 82, 87, 93, 98, 104 };
35
36
37
38
39int displayLeds[9][10] = {
40  { 0, 11, 22, 33, 44, 55, 66, 77, 88, 99 },
41  { 9, 20, 31, 42, 53, 64, 75, 86, 97, 0 },
42  { 1, 12, 23, 34, 45, 56, 67, 78, 89, 100 },
43  { 8, 19, 30, 41, 52, 63, 74, 85, 96, 0 },
44  { 2, 13, 24, 35, 46, 57, 68, 79, 90, 101 },
45  { 7, 18, 29, 40, 51, 62, 73, 84, 95, 0 },
46  { 3, 14, 25, 36, 47, 58, 69, 80, 91, 102 },
47  { 6, 17, 28, 39, 50, 61, 72, 83, 94, 0 },
48  { 4, 15, 26, 37, 48, 59, 70, 81, 92, 103 }
49};
50
51int litLeds[54] = {};
52
53
54
55int litNumbers[4];
56
57
58int digit0[] = { 9, 8, 7, 6, 11, 15, 20, 19, 18, 17 };
59int digit1[] = { 20, 19, 18, 17 };
60int digit2[] = { 9, 7, 6, 11, 13, 14, 20, 19, 17 };
61int digit3[] = { 9, 18, 6, 11, 13, 15, 20, 19, 17 };
62int digit4[] = { 9, 8, 13, 20, 19, 18, 17 };
63int digit5[] = { 9, 8, 7, 11, 13, 15, 18, 17 };
64int digit6[] = { 9, 8, 7, 6, 11, 13, 15, 20, 18, 17 };
65int digit7[] = { 9, 11, 20, 19, 18, 17 };
66int digit8[] = { 9, 8, 7, 6, 11, 13, 15, 20, 19, 18, 17 }; //13*4=52
67int digit9[] = { 9, 8, 11, 13, 20, 19, 18, 17 };
68
69
70//determine sizes of the arrays
71int sizeZero = sizeof(digit0) / sizeof(digit0[0]);
72int sizeOne = sizeof(digit1) / sizeof(digit1[0]);
73int sizeTwo = sizeof(digit2) / sizeof(digit2[0]);
74int sizeThree = sizeof(digit3) / sizeof(digit3[0]);
75int sizeFour = sizeof(digit4) / sizeof(digit4[0]);
76int sizeFive = sizeof(digit5) / sizeof(digit5[0]);
77int sizeSix = sizeof(digit6) / sizeof(digit6[0]);
78int sizeSeven = sizeof(digit7) / sizeof(digit7[0]);
79int sizeEight = sizeof(digit8) / sizeof(digit8[0]);
80int sizeNine = sizeof(digit9) / sizeof(digit9[0]);
81
82//stores all the digit sizes into a single array 0 for sizeZero etc.
83int sizes[] = { sizeZero, sizeOne, sizeTwo, sizeThree, sizeFour, sizeFive, sizeSix, sizeSeven, sizeEight, sizeNine };
84
85
86
87
88
89
90
91#define LED_PIN A1
92#define LED_COUNT 105
93
94Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
95
96// Array to store the color state for each button
97int colorState[numButtons] = { 0 };  // 0: Red, 1: Green, 2: Blue, 3: White, 4: Off
98
99
100void updateTime() {
101  // Create a new RtcDateTime object with updated minutes
102  RtcDateTime updatedTime(
103    year, month, day,
104    hours, minutes, seconds);
105
106  // Set the updated time back to the RTC
107  Rtc.SetIsWriteProtected(false);
108  Rtc.SetDateTime(updatedTime);
109  delay(200);
110  Rtc.SetIsWriteProtected(true);
111}
112
113
114
115void clearDisplay() {
116  for (int i = 0; i < LED_COUNT; i++) {
117    strip.setPixelColor(i, strip.Color(0, 0, 0));  // Off
118  }
119  //strip.show();
120}
121
122
123
124void fillColor(uint8_t hue) {
125
126
127  //uint32_t color = strip.ColorHSV(hue * 256); // Using the built-in ColorHSV function
128
129  for (int i = 0; i < LED_COUNT; i++) {
130    strip.setPixelColor(i, strip.ColorHSV(hue * 256));  // Set each LED color
131  }
132  //  strip.show(); // Update the LED strip
133}
134
135void redBee() {
136  strip.setPixelColor(bx, strip.Color(255, 0, 0));  // Set the pixel color
137  bx++;
138  if (bx > 105) {
139    bx = 0;
140  }
141}
142//void fillColor(uint8_t red, uint8_t green, uint8_t blue) {
143// for (int i = 0; i < LED_COUNT; i++) {
144// strip.setPixelColor(i, strip.Color(red, green, blue)); // Set the pixel color
145//}
146//strip.show(); // Update the LED strip
147//}
148
149
150
151void zero() {
152  for (int i = 0; i < sizeZero; i++) {
153    strip.setPixelColor(digit0[i] + shift, strip.ColorHSV(hue2 * 256));
154
155    //    int shifts[] = {0, 22, 55, 77};
156    if (shift == 0) litLeds[i] = digit0[i] + shift;
157    if (shift == 22) litLeds[i + 12] = digit0[i] + shift;
158    if (shift == 55) litLeds[i + 24] = digit0[i] + shift;
159    if (shift == 77) litLeds[i + 36] = digit0[i] + shift;
160  }
161}
162
163void one() {
164  for (int i = 0; i < sizeOne; i++) {
165    strip.setPixelColor(digit1[i] + shift, strip.ColorHSV(hue2 * 256));
166    if (shift == 0) litLeds[i] = digit1[i] + shift;
167    if (shift == 22) litLeds[i + 12] = digit1[i] + shift;
168    if (shift == 55) litLeds[i + 24] = digit1[i] + shift;
169    if (shift == 77) litLeds[i + 36] = digit1[i] + shift;
170  }
171}
172
173void two() {
174  for (int i = 0; i < sizeTwo; i++) {
175    strip.setPixelColor(digit2[i] + shift, strip.ColorHSV(hue2 * 256));
176    if (shift == 0) litLeds[i] = digit2[i] + shift;
177    if (shift == 22) litLeds[i + 12] = digit2[i] + shift;
178    if (shift == 55) litLeds[i + 24] = digit2[i] + shift;
179    if (shift == 77) litLeds[i + 36] = digit2[i] + shift;
180  }
181}
182
183void three() {
184  for (int i = 0; i < sizeThree; i++) {
185    strip.setPixelColor(digit3[i] + shift, strip.ColorHSV(hue2 * 256));
186    if (shift == 0) litLeds[i] = digit3[i] + shift;
187    if (shift == 22) litLeds[i + 12] = digit3[i] + shift;
188    if (shift == 55) litLeds[i + 24] = digit3[i] + shift;
189    if (shift == 77) litLeds[i + 36] = digit3[i] + shift;
190  }
191}
192
193void four() {
194  for (int i = 0; i < sizeFour; i++) {
195    strip.setPixelColor(digit4[i] + shift, strip.ColorHSV(hue2 * 256));
196    if (shift == 0) litLeds[i] = digit4[i] + shift;
197    if (shift == 22) litLeds[i + 12] = digit4[i] + shift;
198    if (shift == 55) litLeds[i + 24] = digit4[i] + shift;
199    if (shift == 77) litLeds[i + 36] = digit4[i] + shift;
200  }
201}
202
203void five() {
204  for (int i = 0; i < sizeFive; i++) {
205    strip.setPixelColor(digit5[i] + shift, strip.ColorHSV(hue2 * 256));
206    if (shift == 0) litLeds[i] = digit5[i] + shift;
207    if (shift == 22) litLeds[i + 12] = digit5[i] + shift;
208    if (shift == 55) litLeds[i + 24] = digit5[i] + shift;
209    if (shift == 77) litLeds[i + 36] = digit5[i] + shift;
210  }
211}
212
213void six() {
214  for (int i = 0; i < sizeSix; i++) {
215    strip.setPixelColor(digit6[i] + shift, strip.ColorHSV(hue2 * 256));
216    if (shift == 0) litLeds[i] = digit6[i] + shift;
217    if (shift == 22) litLeds[i + 12] = digit6[i] + shift;
218    if (shift == 55) litLeds[i + 24] = digit6[i] + shift;
219    if (shift == 77) litLeds[i + 36] = digit6[i] + shift;
220  }
221}
222
223void seven() {
224  for (int i = 0; i < sizeSeven; i++) {
225    strip.setPixelColor(digit7[i] + shift, strip.ColorHSV(hue2 * 256));
226    if (shift == 0) litLeds[i] = digit7[i] + shift;
227    if (shift == 22) litLeds[i + 12] = digit7[i] + shift;
228    if (shift == 55) litLeds[i + 24] = digit7[i] + shift;
229    if (shift == 77) litLeds[i + 36] = digit7[i] + shift;
230  }
231}
232
233void eight() {
234  for (int i = 0; i < sizeEight; i++) {
235    strip.setPixelColor(digit8[i] + shift, strip.ColorHSV(hue2 * 256));
236    if (shift == 0) litLeds[i] = digit8[i] + shift;
237    if (shift == 22) litLeds[i + 12] = digit8[i] + shift;
238    if (shift == 55) litLeds[i + 24] = digit8[i] + shift;
239    if (shift == 77) litLeds[i + 36] = digit8[i] + shift;
240  }
241}
242
243void nine() {
244  for (int i = 0; i < sizeNine; i++) {
245    strip.setPixelColor(digit9[i] + shift, strip.ColorHSV(hue2 * 256));
246    if (shift == 0) litLeds[i] = digit9[i] + shift;
247    if (shift == 22) litLeds[i + 12] = digit9[i] + shift;
248    if (shift == 55) litLeds[i + 24] = digit9[i] + shift;
249    if (shift == 77) litLeds[i + 36] = digit9[i] + shift;
250  }
251}
252
253
254
255
256
257
258
259
260// Declare an array of function pointers to hold the functions
261void (*functionArray[10])();  // Array to hold 10 function pointers
262
263
264
265void displayTime() {
266
267
268if (hue!=157)  fillColor(hue);  // Update the LED color based on the current hue
269if (hue==157) clearDisplay();
270
271
272
273  ///fillColor(0,100,0);
274  //randomHex();
275
276
277  if (seconds % 2 == 0 && changeTime != 1) {
278    strip.setPixelColor(52, strip.ColorHSV(hue2 * 256));  // Red
279    strip.setPixelColor(50, strip.ColorHSV(hue2 * 256));  // Red
280                                                          //redBee();
281  }
282
283  if (changeTime == 1) {
284    strip.setPixelColor(displayLeds[3][4], strip.Color(255, 0, 0));  // Red
285    strip.setPixelColor(displayLeds[7][4], strip.Color(255, 0, 0));  // Red
286  }
287  //strip.show();
288
289  shift = 0;  // Set shift to 0 once since it's always 0
290  if (h2 >= 0 && h2 <= 9) functionArray[h2]();
291  shift = 22;  // Set shift to 0 once since it's always 0
292  if (h1 >= 0 && h1 <= 9) functionArray[h1]();
293  shift = 55;  // Set shift to 0 once since it's always 0
294  if (m2 >= 0 && m2 <= 9) functionArray[m2]();
295  shift = 77;  // Set shift to 0 once since it's always 0
296  if (m1 >= 0 && m1 <= 9) functionArray[m1]();
297  strip.show();
298}
299
300
301void setup() {
302  Serial.begin(9600);
303
304  functionArray[0] = zero;
305  functionArray[1] = one;
306  functionArray[2] = two;
307  functionArray[3] = three;
308  functionArray[4] = four;
309  functionArray[5] = five;
310  functionArray[6] = six;
311  functionArray[7] = seven;
312  functionArray[8] = eight;
313  functionArray[9] = nine;
314
315  for (int i = 0; i < 52; i++) {  // 13 * 4 = 52
316    litLeds[i] = -1;
317  }
318
319
320
321  randomSeed(analogRead(2));
322
323  Serial.print("compiled: ");
324  Serial.print(__DATE__);
325  Serial.println(__TIME__);
326
327  Rtc.Begin();
328
329  RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
330  printDateTime(compiled);
331  Serial.println();
332
333  if (!Rtc.IsDateTimeValid()) {
334    // Common Causes:
335    //    1) first time you ran and the device wasn't running yet
336    //    2) the battery on the device is low or even missing
337
338    Serial.println("RTC lost confidence in the DateTime!");
339    Rtc.SetDateTime(compiled);
340  }
341
342  if (Rtc.GetIsWriteProtected()) {
343    Serial.println("RTC was write protected, enabling writing now");
344    Rtc.SetIsWriteProtected(false);
345  }
346
347  if (!Rtc.GetIsRunning()) {
348    Serial.println("RTC was not actively running, starting now");
349    Rtc.SetIsRunning(true);
350  }
351
352  RtcDateTime now = Rtc.GetDateTime();
353  if (now < compiled) {
354    Serial.println("RTC is older than compile time!  (Updating DateTime)");
355    Rtc.SetDateTime(compiled);
356  } else if (now > compiled) {
357    Serial.println("RTC is newer than compile time. (this is expected)");
358  } else if (now == compiled) {
359    Serial.println("RTC is the same as compile time! (not expected but all is fine)");
360  }
361
362
363
364  for (int i = 0; i < numRows; i++) {
365    pinMode(rowPins[i], OUTPUT);
366    digitalWrite(rowPins[i], LOW);  // Ensure rows are initially LOW
367  }
368
369  strip.begin();  // Initialize NeoPixel strip object
370  clearDisplay();
371  delay(1000);
372  strip.setBrightness(brightness);  // Set maximum brightness
373}
374
375void loop() {
376
377  RtcDateTime now = Rtc.GetDateTime();
378
379  m1 = minutes % 10;
380  m2 = minutes / 10;
381  h1 = hours % 10;
382  h2 = hours / 10;
383  s = seconds % 10;
384  printDateTime(now);
385  Serial.println();
386
387
388  //strip.setBrightness(brightness);
389
390
391  //fillColor(0,10,100);
392  //clearDisplay();
393
394
395  if (mode == 0) {
396
397    displayTime();
398  }
399
400
401
402
403  //Check the buttons pressed
404  for (int i = 0; i < numRows; i++) {
405    // Activate the current row
406    row = i;
407    digitalWrite(rowPins[row], HIGH);
408
409    // Read the ADC value
410    int sensorValue = analogRead(A0);
411
412    // Check which button is pressed
413    int buttonPressed = getButtonPressed(sensorValue);
414
415    if (buttonPressed != -1) {
416      col = buttonPressed;
417
418
419      // Cycle through colors for the button pressed
420      cycleColor(buttonPressed);
421     // if (mode == 1&&col!=0&&row!=i,&&row!=i) delay(200);  // if drawing mode
422
423      if (row == 0 && col == 0 && brightness < 255) {
424        brightness += 5;
425        strip.setBrightness(brightness);
426      }
427
428      if (row == 2 && col == 0 && brightness > 5) {
429        brightness -= 5;
430        strip.setBrightness(brightness);
431      }
432
433
434      // Simple to just check a button and do something
435// change the background hue
436      if (row == 0 && col == 9) {
437        hue=hue+3;                    // Increment the hue to cycle through colors
438        if (hue >= 256) hue = 0;  // Reset hue when it reaches 255
439      }
440  if (row==2&&col==9)
441  {
442    hue=157;
443  }
444
445      // if (row==2&&col==9)
446      //{
447      // hue2++; // Increment the hue to cycle through colors
448      ///if (hue2 >= 256) hue2 = 0; // Reset hue when it reaches 255
449      //}
450
451
452
453      //change time if either the two center dots are pressed and not drawing mode
454      if (((row == 3 && col == 4) || (row == 7 && col == 4))
455       && mode != 1) {
456
457        changeTime = !changeTime;
458        displayTime();
459
460        //if (changeTime==1) {
461        mode = 2;  //change time mode
462        //}
463
464        if (changeTime == 0) {
465
466          mode = 0;
467        }
468
469
470        delay(200);
471      }
472
473      //
474      //change the time.
475      if (changeTime == 1) {
476
477
478        // change h2 digit if any of the three top button are pressed over that digit.
479
480
481
482        if (col == 8) {
483          m1 += 1;
484          if (m1 == 10) {
485            m1 = 0;
486          }
487          minutes = m2 * 10 + m1;
488          updateTime();
489        }
490
491        if (col == 6) {
492          m2 += 1;
493          if (m2 == 6) {
494            m2 = 0;
495          }
496          minutes = m2 * 10 + m1;
497          updateTime();
498        }
499
500
501        if (col == 3) {
502          h1 += 1;
503          if (h1 == 10 || h1 > 3 && h2 == 2) {
504            if (h2 != 0) h1 = 0;
505            if (h2 == 0) h1 = 1;
506          }
507          hours = h2 * 10 + h1;
508          updateTime();
509        }
510        if (col == 1) {
511          h2 += 1;
512          if (h2 == 3) {
513            if (h1 != 0) h2 = 0;
514            if (h1 == 0) h2 = 1;
515          }
516          hours = h2 * 10 + h1;
517          updateTime();
518        }
519
520        //update the display to show the red dots
521        displayTime();
522      }
523
524      if (changeTime == 0) {
525
526        // test to see if button coresponds to a lit led from the digits.
527       
528       if(mode!=1)
529       {
530        for (int c = 0; c < 13 * 4; c++) {
531
532          if (litLeds[c] == displayLeds[row][col])  /// test to see if the button pressesed led matched the litLEDS array
533          {
534            hue2 = hue2 + 3;            // Increment the hue to cycle through colors
535            if (hue2 >= 256) hue2 = 0;  // Reset hue when it reaches 255
536            break;
537          }
538        }
539       }
540        //drawing mode
541
542
543
544
545        if (row == 8 && col == 0) {
546          mode++;
547          fillColor(hue);                                                                     // Increment the hue to cycle through colors
548          if (mode == 1) strip.setPixelColor(displayLeds[row][col], strip.Color(255, 0, 0));  // Red
549
550          strip.show();
551          delay(200);
552          if (mode >= 2) mode = 0;  // Reset hue when it reaches 255
553        }
554
555
556
557
558
559        if (mode == 1)  // coloring mode
560        {
561
562          if (row == 4 && col == 0) {
563            clearDisplay();
564          }
565          if (row == 6 && col == 0)
566            fillColor(hue);
567          strip.show();
568          //delay(200);
569        }
570      }
571
572
573
574
575      // Print which button is pressed
576      Serial.print("Button [");
577      Serial.print(row);
578      Serial.print(",");
579      Serial.print(col);
580      Serial.print("]: ");
581
582
583
584      Serial.print(sensorValue);
585      Serial.print(",");
586      Serial.print(h2);
587      Serial.print(h1);
588      Serial.print(m2);
589      Serial.print(m1);
590
591      // for (int i = 0; i < 13 * 4; i++) {
592      //  Serial.print(litLeds[i]);  // Print the value
593      // Serial.print(",");
594      //  }
595      Serial.println("");
596
597      //Serial.println(displayLeds[row][col]);
598    }
599
600    // Deactivate the row
601    digitalWrite(rowPins[row], LOW);
602  }
603}
604
605int getButtonPressed(int adcValue) {
606  for (int i = 0; i < numButtons; i++) {
607    if ((adcValue >= (expectedADCValues[i] - threshold) && adcValue <= (expectedADCValues[i] + threshold)) && adcValue > threshold) {
608      return i;
609    }
610  }
611  return -1;
612}
613
614
615
616
617
618
619
620
621void randomHex() {
622  //strip.setPixelColor(displayLeds[random(9)][random(10)], strip.Color(random(200, 240), random(200, 240), random(0, 10))); // yellow
623  strip.setPixelColor(displayLeds[random(9)][random(10)], strip.Color(random(0, 255), random(0, 255), random(0, 255)));  // yellow
624                                                                                                                         //strip.show();
625                                                                                                                         //delay(200);
626}
627
628void cycleColor(int buttonIndex) {
629  colorState[buttonIndex] = (colorState[buttonIndex] + 1) % 5;  // Cycle through 0 to 4
630
631  // Set the color based on the current state
632  switch (colorState[buttonIndex]) {
633    case 0:
634      strip.setPixelColor(displayLeds[row][col], strip.Color(255, 0, 0));  // Red
635      break;
636    case 1:
637      strip.setPixelColor(displayLeds[row][col], strip.Color(0, 255, 0));  // Green
638      break;
639    case 2:
640      strip.setPixelColor(displayLeds[row][col], strip.Color(238, 210, 2));  // yellow
641      break;
642    case 3:
643      strip.setPixelColor(displayLeds[row][col], strip.Color(255, 255, 255));  // White
644      break;
645    case 4:
646      strip.setPixelColor(displayLeds[row][col], strip.Color(0, 0, 0));  // Off
647      break;
648  }
649  
650  strip.show();
651}
652
653
654#define countof(a) (sizeof(a) / sizeof(a[0]))
655
656void printDateTime(const RtcDateTime& dt) {
657  char datestring[26];
658  //    uint8_t hours = dt.Hour();
659
660  month = dt.Month();
661  year = dt.Year();
662  day = dt.Day();
663  hours = dt.Hour();
664  minutes = dt.Minute();
665  seconds = dt.Second();
666
667  snprintf_P(datestring,
668             countof(datestring),
669             PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
670             dt.Month(),
671             dt.Day(),
672             dt.Year(),
673             dt.Hour(),
674             dt.Minute(),
675             dt.Second());
676  Serial.print(datestring);
677}

#include <Adafruit_NeoPixel.h>
#include <RtcDS1302.h>

ThreeWire myWire(3, 2, 4);  // IO, SCLK, CE
RtcDS1302<ThreeWire> Rtc(myWire);

int hue = 150;  // Variable to track the hue
int hue2 = 42;  // Variable to track the hue

int changeTime = 0;

int bx, by = 0;

int h1, h2 = 0;  // h1= hour ones, h2= hour tens (digits)
int m1, m2 = 0;  // m1= minutes ones, m2=minutes tens
int s = 0;       // seconds
int dots = 0;
int year, month, day, hours, minutes, seconds = 0;
int shift = 0;
int mode = 0;

int brightness = 5;
// Define shift values for each digit type
int shifts[] = { 0, 22, 55, 77 };
int col = 0;
int row = 0;

const int numButtons = 19;
const int numRows = 9;         // Total number of row pins
const int numBacklights = 19;  // Total number of row pins
int expectedADCValues[numButtons] = { 1020, 925, 765, 612, 475, 361, 265, 190, 133, 92 };
int threshold = 10;  // Adjusted threshold for better accuracy (test and adjust further)
int rowPins[numRows] = { 5, 6, 7, 8, 9, 10, 11, 12, 13 };
int backLights[numBacklights] = { 5, 10, 16, 21, 27, 32, 38, 43, 49, 54, 60, 65, 71, 76, 82, 87, 93, 98, 104 };




int displayLeds[9][10] = {
  { 0, 11, 22, 33, 44, 55, 66, 77, 88, 99 },
  { 9, 20, 31, 42, 53, 64, 75, 86, 97, 0 },
  { 1, 12, 23, 34, 45, 56, 67, 78, 89, 100 },
  { 8, 19, 30, 41, 52, 63, 74, 85, 96, 0 },
  { 2, 13, 24, 35, 46, 57, 68, 79, 90, 101 },
  { 7, 18, 29, 40, 51, 62, 73, 84, 95, 0 },
  { 3, 14, 25, 36, 47, 58, 69, 80, 91, 102 },
  { 6, 17, 28, 39, 50, 61, 72, 83, 94, 0 },
  { 4, 15, 26, 37, 48, 59, 70, 81, 92, 103 }
};

int litLeds[54] = {};



int litNumbers[4];


int digit0[] = { 9, 8, 7, 6, 11, 15, 20, 19, 18, 17 };
int digit1[] = { 20, 19, 18, 17 };
int digit2[] = { 9, 7, 6, 11, 13, 14, 20, 19, 17 };
int digit3[] = { 9, 18, 6, 11, 13, 15, 20, 19, 17 };
int digit4[] = { 9, 8, 13, 20, 19, 18, 17 };
int digit5[] = { 9, 8, 7, 11, 13, 15, 18, 17 };
int digit6[] = { 9, 8, 7, 6, 11, 13, 15, 20, 18, 17 };
int digit7[] = { 9, 11, 20, 19, 18, 17 };
int digit8[] = { 9, 8, 7, 6, 11, 13, 15, 20, 19, 18, 17 }; //13*4=52
int digit9[] = { 9, 8, 11, 13, 20, 19, 18, 17 };


//determine sizes of the arrays
int sizeZero = sizeof(digit0) / sizeof(digit0[0]);
int sizeOne = sizeof(digit1) / sizeof(digit1[0]);
int sizeTwo = sizeof(digit2) / sizeof(digit2[0]);
int sizeThree = sizeof(digit3) / sizeof(digit3[0]);
int sizeFour = sizeof(digit4) / sizeof(digit4[0]);
int sizeFive = sizeof(digit5) / sizeof(digit5[0]);
int sizeSix = sizeof(digit6) / sizeof(digit6[0]);
int sizeSeven = sizeof(digit7) / sizeof(digit7[0]);
int sizeEight = sizeof(digit8) / sizeof(digit8[0]);
int sizeNine = sizeof(digit9) / sizeof(digit9[0]);

//stores all the digit sizes into a single array 0 for sizeZero etc.
int sizes[] = { sizeZero, sizeOne, sizeTwo, sizeThree, sizeFour, sizeFive, sizeSix, sizeSeven, sizeEight, sizeNine };







#define LED_PIN A1
#define LED_COUNT 105

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

// Array to store the color state for each button
int colorState[numButtons] = { 0 };  // 0: Red, 1: Green, 2: Blue, 3: White, 4: Off


void updateTime() {
  // Create a new RtcDateTime object with updated minutes
  RtcDateTime updatedTime(
    year, month, day,
    hours, minutes, seconds);

  // Set the updated time back to the RTC
  Rtc.SetIsWriteProtected(false);
  Rtc.SetDateTime(updatedTime);
  delay(200);
  Rtc.SetIsWriteProtected(true);
}



void clearDisplay() {
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 0));  // Off
  }
  //strip.show();
}



void fillColor(uint8_t hue) {


  //uint32_t color = strip.ColorHSV(hue * 256); // Using the built-in ColorHSV function

  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.ColorHSV(hue * 256));  // Set each LED color
  }
  //  strip.show(); // Update the LED strip
}

void redBee() {
  strip.setPixelColor(bx, strip.Color(255, 0, 0));  // Set the pixel color
  bx++;
  if (bx > 105) {
    bx = 0;
  }
}
//void fillColor(uint8_t red, uint8_t green, uint8_t blue) {
// for (int i = 0; i < LED_COUNT; i++) {
// strip.setPixelColor(i, strip.Color(red, green, blue)); // Set the pixel color
//}
//strip.show(); // Update the LED strip
//}



void zero() {
  for (int i = 0; i < sizeZero; i++) {
    strip.setPixelColor(digit0[i] + shift, strip.ColorHSV(hue2 * 256));

    //    int shifts[] = {0, 22, 55, 77};
    if (shift == 0) litLeds[i] = digit0[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit0[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit0[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit0[i] + shift;
  }
}

void one() {
  for (int i = 0; i < sizeOne; i++) {
    strip.setPixelColor(digit1[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit1[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit1[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit1[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit1[i] + shift;
  }
}

void two() {
  for (int i = 0; i < sizeTwo; i++) {
    strip.setPixelColor(digit2[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit2[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit2[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit2[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit2[i] + shift;
  }
}

void three() {
  for (int i = 0; i < sizeThree; i++) {
    strip.setPixelColor(digit3[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit3[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit3[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit3[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit3[i] + shift;
  }
}

void four() {
  for (int i = 0; i < sizeFour; i++) {
    strip.setPixelColor(digit4[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit4[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit4[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit4[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit4[i] + shift;
  }
}

void five() {
  for (int i = 0; i < sizeFive; i++) {
    strip.setPixelColor(digit5[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit5[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit5[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit5[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit5[i] + shift;
  }
}

void six() {
  for (int i = 0; i < sizeSix; i++) {
    strip.setPixelColor(digit6[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit6[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit6[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit6[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit6[i] + shift;
  }
}

void seven() {
  for (int i = 0; i < sizeSeven; i++) {
    strip.setPixelColor(digit7[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit7[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit7[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit7[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit7[i] + shift;
  }
}

void eight() {
  for (int i = 0; i < sizeEight; i++) {
    strip.setPixelColor(digit8[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit8[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit8[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit8[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit8[i] + shift;
  }
}

void nine() {
  for (int i = 0; i < sizeNine; i++) {
    strip.setPixelColor(digit9[i] + shift, strip.ColorHSV(hue2 * 256));
    if (shift == 0) litLeds[i] = digit9[i] + shift;
    if (shift == 22) litLeds[i + 12] = digit9[i] + shift;
    if (shift == 55) litLeds[i + 24] = digit9[i] + shift;
    if (shift == 77) litLeds[i + 36] = digit9[i] + shift;
  }
}








// Declare an array of function pointers to hold the functions
void (*functionArray[10])();  // Array to hold 10 function pointers



void displayTime() {


if (hue!=157)  fillColor(hue);  // Update the LED color based on the current hue
if (hue==157) clearDisplay();



  ///fillColor(0,100,0);
  //randomHex();


  if (seconds % 2 == 0 && changeTime != 1) {
    strip.setPixelColor(52, strip.ColorHSV(hue2 * 256));  // Red
    strip.setPixelColor(50, strip.ColorHSV(hue2 * 256));  // Red
                                                          //redBee();
  }

  if (changeTime == 1) {
    strip.setPixelColor(displayLeds[3][4], strip.Color(255, 0, 0));  // Red
    strip.setPixelColor(displayLeds[7][4], strip.Color(255, 0, 0));  // Red
  }
  //strip.show();

  shift = 0;  // Set shift to 0 once since it's always 0
  if (h2 >= 0 && h2 <= 9) functionArray[h2]();
  shift = 22;  // Set shift to 0 once since it's always 0
  if (h1 >= 0 && h1 <= 9) functionArray[h1]();
  shift = 55;  // Set shift to 0 once since it's always 0
  if (m2 >= 0 && m2 <= 9) functionArray[m2]();
  shift = 77;  // Set shift to 0 once since it's always 0
  if (m1 >= 0 && m1 <= 9) functionArray[m1]();
  strip.show();
}


void setup() {
  Serial.begin(9600);

  functionArray[0] = zero;
  functionArray[1] = one;
  functionArray[2] = two;
  functionArray[3] = three;
  functionArray[4] = four;
  functionArray[5] = five;
  functionArray[6] = six;
  functionArray[7] = seven;
  functionArray[8] = eight;
  functionArray[9] = nine;

  for (int i = 0; i < 52; i++) {  // 13 * 4 = 52
    litLeds[i] = -1;
  }



  randomSeed(analogRead(2));

  Serial.print("compiled: ");
  Serial.print(__DATE__);
  Serial.println(__TIME__);

  Rtc.Begin();

  RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
  printDateTime(compiled);
  Serial.println();

  if (!Rtc.IsDateTimeValid()) {
    // Common Causes:
    //    1) first time you ran and the device wasn't running yet
    //    2) the battery on the device is low or even missing

    Serial.println("RTC lost confidence in the DateTime!");
    Rtc.SetDateTime(compiled);
  }

  if (Rtc.GetIsWriteProtected()) {
    Serial.println("RTC was write protected, enabling writing now");
    Rtc.SetIsWriteProtected(false);
  }

  if (!Rtc.GetIsRunning()) {
    Serial.println("RTC was not actively running, starting now");
    Rtc.SetIsRunning(true);
  }

  RtcDateTime now = Rtc.GetDateTime();
  if (now < compiled) {
    Serial.println("RTC is older than compile time!  (Updating DateTime)");
    Rtc.SetDateTime(compiled);
  } else if (now > compiled) {
    Serial.println("RTC is newer than compile time. (this is expected)");
  } else if (now == compiled) {
    Serial.println("RTC is the same as compile time! (not expected but all is fine)");
  }



  for (int i = 0; i < numRows; i++) {
    pinMode(rowPins[i], OUTPUT);
    digitalWrite(rowPins[i], LOW);  // Ensure rows are initially LOW
  }

  strip.begin();  // Initialize NeoPixel strip object
  clearDisplay();
  delay(1000);
  strip.setBrightness(brightness);  // Set maximum brightness
}

void loop() {

  RtcDateTime now = Rtc.GetDateTime();

  m1 = minutes % 10;
  m2 = minutes / 10;
  h1 = hours % 10;
  h2 = hours / 10;
  s = seconds % 10;
  printDateTime(now);
  Serial.println();


  //strip.setBrightness(brightness);


  //fillColor(0,10,100);
  //clearDisplay();


  if (mode == 0) {

    displayTime();
  }




  //Check the buttons pressed
  for (int i = 0; i < numRows; i++) {
    // Activate the current row
    row = i;
    digitalWrite(rowPins[row], HIGH);

    // Read the ADC value
    int sensorValue = analogRead(A0);

    // Check which button is pressed
    int buttonPressed = getButtonPressed(sensorValue);

    if (buttonPressed != -1) {
      col = buttonPressed;


      // Cycle through colors for the button pressed
      cycleColor(buttonPressed);
     // if (mode == 1&&col!=0&&row!=i,&&row!=i) delay(200);  // if drawing mode

      if (row == 0 && col == 0 && brightness < 255) {
        brightness += 5;
        strip.setBrightness(brightness);
      }

      if (row == 2 && col == 0 && brightness > 5) {
        brightness -= 5;
        strip.setBrightness(brightness);
      }


      // Simple to just check a button and do something
// change the background hue
      if (row == 0 && col == 9) {
        hue=hue+3;                    // Increment the hue to cycle through colors
        if (hue >= 256) hue = 0;  // Reset hue when it reaches 255
      }
  if (row==2&&col==9)
  {
    hue=157;
  }

      // if (row==2&&col==9)
      //{
      // hue2++; // Increment the hue to cycle through colors
      ///if (hue2 >= 256) hue2 = 0; // Reset hue when it reaches 255
      //}



      //change time if either the two center dots are pressed and not drawing mode
      if (((row == 3 && col == 4) || (row == 7 && col == 4))
       && mode != 1) {

        changeTime = !changeTime;
        displayTime();

        //if (changeTime==1) {
        mode = 2;  //change time mode
        //}

        if (changeTime == 0) {

          mode = 0;
        }


        delay(200);
      }

      //
      //change the time.
      if (changeTime == 1) {


        // change h2 digit if any of the three top button are pressed over that digit.



        if (col == 8) {
          m1 += 1;
          if (m1 == 10) {
            m1 = 0;
          }
          minutes = m2 * 10 + m1;
          updateTime();
        }

        if (col == 6) {
          m2 += 1;
          if (m2 == 6) {
            m2 = 0;
          }
          minutes = m2 * 10 + m1;
          updateTime();
        }


        if (col == 3) {
          h1 += 1;
          if (h1 == 10 || h1 > 3 && h2 == 2) {
            if (h2 != 0) h1 = 0;
            if (h2 == 0) h1 = 1;
          }
          hours = h2 * 10 + h1;
          updateTime();
        }
        if (col == 1) {
          h2 += 1;
          if (h2 == 3) {
            if (h1 != 0) h2 = 0;
            if (h1 == 0) h2 = 1;
          }
          hours = h2 * 10 + h1;
          updateTime();
        }

        //update the display to show the red dots
        displayTime();
      }

      if (changeTime == 0) {

        // test to see if button coresponds to a lit led from the digits.
       
       if(mode!=1)
       {
        for (int c = 0; c < 13 * 4; c++) {

          if (litLeds[c] == displayLeds[row][col])  /// test to see if the button pressesed led matched the litLEDS array
          {
            hue2 = hue2 + 3;            // Increment the hue to cycle through colors
            if (hue2 >= 256) hue2 = 0;  // Reset hue when it reaches 255
            break;
          }
        }
       }
        //drawing mode




        if (row == 8 && col == 0) {
          mode++;
          fillColor(hue);                                                                     // Increment the hue to cycle through colors
          if (mode == 1) strip.setPixelColor(displayLeds[row][col], strip.Color(255, 0, 0));  // Red

          strip.show();
          delay(200);
          if (mode >= 2) mode = 0;  // Reset hue when it reaches 255
        }





        if (mode == 1)  // coloring mode
        {

          if (row == 4 && col == 0) {
            clearDisplay();
          }
          if (row == 6 && col == 0)
            fillColor(hue);
          strip.show();
          //delay(200);
        }
      }




      // Print which button is pressed
      Serial.print("Button [");
      Serial.print(row);
      Serial.print(",");
      Serial.print(col);
      Serial.print("]: ");



      Serial.print(sensorValue);
      Serial.print(",");
      Serial.print(h2);
      Serial.print(h1);
      Serial.print(m2);
      Serial.print(m1);

      // for (int i = 0; i < 13 * 4; i++) {
      //  Serial.print(litLeds[i]);  // Print the value
      // Serial.print(",");
      //  }
      Serial.println("");

      //Serial.println(displayLeds[row][col]);
    }

    // Deactivate the row
    digitalWrite(rowPins[row], LOW);
  }
}

int getButtonPressed(int adcValue) {
  for (int i = 0; i < numButtons; i++) {
    if ((adcValue >= (expectedADCValues[i] - threshold) && adcValue <= (expectedADCValues[i] + threshold)) && adcValue > threshold) {
      return i;
    }
  }
  return -1;
}








void randomHex() {
  //strip.setPixelColor(displayLeds[random(9)][random(10)], strip.Color(random(200, 240), random(200, 240), random(0, 10))); // yellow
  strip.setPixelColor(displayLeds[random(9)][random(10)], strip.Color(random(0, 255), random(0, 255), random(0, 255)));  // yellow
                                                                                                                         //strip.show();
                                                                                                                         //delay(200);
}

void cycleColor(int buttonIndex) {
  colorState[buttonIndex] = (colorState[buttonIndex] + 1) % 5;  // Cycle through 0 to 4

  // Set the color based on the current state
  switch (colorState[buttonIndex]) {
    case 0:
      strip.setPixelColor(displayLeds[row][col], strip.Color(255, 0, 0));  // Red
      break;
    case 1:
      strip.setPixelColor(displayLeds[row][col], strip.Color(0, 255, 0));  // Green
      break;
    case 2:
      strip.setPixelColor(displayLeds[row][col], strip.Color(238, 210, 2));  // yellow
      break;
    case 3:
      strip.setPixelColor(displayLeds[row][col], strip.Color(255, 255, 255));  // White
      break;
    case 4:
      strip.setPixelColor(displayLeds[row][col], strip.Color(0, 0, 0));  // Off
      break;
  }
  
  strip.show();
}


#define countof(a) (sizeof(a) / sizeof(a[0]))

void printDateTime(const RtcDateTime& dt) {
  char datestring[26];
  //    uint8_t hours = dt.Hour();

  month = dt.Month();
  year = dt.Year();
  day = dt.Day();
  hours = dt.Hour();
  minutes = dt.Minute();
  seconds = dt.Second();

  snprintf_P(datestring,
             countof(datestring),
             PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
             dt.Month(),
             dt.Day(),
             dt.Year(),
             dt.Hour(),
             dt.Minute(),
             dt.Second());
  Serial.print(datestring);
}

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newsonator

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