Code For POV Display

int LED_PINS[] = {9,8,7,6,5,4,3,2};    

  int INPUT_PIN = 10;

  int DEFAULT_LED =13;

  int CUSTOM_CHAR_LENGTH = 5;

  int LED_COUNT = 8;

  int k;

  const unsigned char CUSTOM_CHAR[95][5] = {

         {0x00,0x00,0x00,0x00,0x00},   // 0x20 32

         {0x00,0x00,0x6f,0x00,0x00},   // ! 0x21 33

         {0x00,0x07,0x00,0x07,0x00},   // " 0x22 34

         {0x14,0x7f,0x14,0x7f,0x14},   // # 0x23 35

         {0x00,0x07,0x04,0x1e,0x00},   // $ 0x24 36

         {0x23,0x13,0x08,0x64,0x62},   // % 0x25 37

         {0x36,0x49,0x56,0x20,0x50},   // & 0x26 38

         {0x00,0x00,0x07,0x00,0x00},   // ' 0x27 39

         {0x00,0x1c,0x22,0x41,0x00},   // ( 0x28 40

         {0x00,0x41,0x22,0x1c,0x00},   // ) 0x29 41

         {0x14,0x08,0x3e,0x08,0x14},   // * 0x2a 42

         {0x08,0x08,0x3e,0x08,0x08},   // + 0x2b 43

         {0x00,0x50,0x30,0x00,0x00},   // , 0x2c 44

         {0x08,0x08,0x08,0x08,0x08},   // - 0x2d 45

         {0x00,0x60,0x60,0x00,0x00},   // . 0x2e 46

         {0x20,0x10,0x08,0x04,0x02},   // / 0x2f 47

         {0x3e,0x51,0x49,0x45,0x3e},   // 0 0x30 48

         {0x00,0x42,0x7f,0x40,0x00},   // 1 0x31 49

         {0x42,0x61,0x51,0x49,0x46},   // 2 0x32 50

         {0x21,0x41,0x45,0x4b,0x31},   // 3 0x33 51

         {0x18,0x14,0x12,0x7f,0x10},   // 4 0x34 52

         {0x27,0x45,0x45,0x45,0x39},   // 5 0x35 53

         {0x3c,0x4a,0x49,0x49,0x30},   // 6 0x36 54

         {0x01,0x71,0x09,0x05,0x03},   // 7 0x37 55

         {0x36,0x49,0x49,0x49,0x36},   // 8 0x38 56

         {0x06,0x49,0x49,0x29,0x1e},   // 9 0x39 57

         {0x00,0x36,0x36,0x00,0x00},   // : 0x3a 58

         {0x00,0x56,0x36,0x00,0x00},   // ; 0x3b 59

         {0x08,0x14,0x22,0x41,0x00},   // < 0x3c 60

         {0x14,0x14,0x14,0x14,0x14},   // = 0x3d 61

         {0x00,0x41,0x22,0x14,0x08},   // > 0x3e 62

         {0x02,0x01,0x51,0x09,0x06},   // ? 0x3f 63

         {0x3e,0x41,0x5d,0x49,0x4e},   // @ 0x40 64

         {0x7e,0x09,0x09,0x09,0x7e},   // A 0x41 65

         {0x7f,0x49,0x49,0x49,0x36},   // B 0x42 66

         {0x3e,0x41,0x41,0x41,0x22},   // C 0x43 67

         {0x7f,0x41,0x41,0x41,0x3e},   // D 0x44 68

         {0x7f,0x49,0x49,0x49,0x41},   // E 0x45 69

         {0x7f,0x09,0x09,0x09,0x01},   // F 0x46 70

         {0x3e,0x41,0x49,0x49,0x7a},   // G 0x47 71

         {0x7f,0x08,0x08,0x08,0x7f},   // H 0x48 72

         {0x00,0x41,0x7f,0x41,0x00},   // I 0x49 73

         {0x20,0x40,0x41,0x3f,0x01},   // J 0x4a 74

         {0x7f,0x08,0x14,0x22,0x41},   // K 0x4b 75

         {0x7f,0x40,0x40,0x40,0x40},   // L 0x4c 76

         {0x7f,0x02,0x0c,0x02,0x7f},   // M 0x4d 77

         {0x7f,0x04,0x08,0x10,0x7f},   // N 0x4e 78

         {0x3e,0x41,0x41,0x41,0x3e},   // O 0x4f 79

         {0x7f,0x09,0x09,0x09,0x06},   // P 0x50 80

         {0x3e,0x41,0x51,0x21,0x5e},   // Q 0x51 81

         {0x7f,0x09,0x19,0x29,0x46},   // R 0x52 82

         {0x46,0x49,0x49,0x49,0x31},   // S 0x53 83

         {0x01,0x01,0x7f,0x01,0x01},   // T 0x54 84

         {0x3f,0x40,0x40,0x40,0x3f},   // U 0x55 85

         {0x0f,0x30,0x40,0x30,0x0f},   // V 0x56 86

         {0x3f,0x40,0x30,0x40,0x3f},   // W 0x57 87

         {0x63,0x14,0x08,0x14,0x63},   // X 0x58 88

         {0x07,0x08,0x70,0x08,0x07},   // Y 0x59 89

         {0x61,0x51,0x49,0x45,0x43},   // Z 0x5a 90

         {0x3c,0x4a,0x49,0x29,0x1e},   // [ 0x5b 91

         {0x02,0x04,0x08,0x10,0x20},   // \ 0x5c 92

         {0x00,0x41,0x7f,0x00,0x00},   // ] 0x5d 93

         {0x04,0x02,0x01,0x02,0x04},   // ^ 0x5e 94

         {0x40,0x40,0x40,0x40,0x40},   // _ 0x5f 95

         {0x00,0x00,0x03,0x04,0x00},   // ` 0x60 96

         {0x20,0x54,0x54,0x54,0x78},   // a 0x61 97

         {0x7f,0x48,0x44,0x44,0x38},   // b 0x62 98

         {0x38,0x44,0x44,0x44,0x20},   // c 0x63 99

         {0x38,0x44,0x44,0x48,0x7f},   // d 0x64 100

         {0x38,0x54,0x54,0x54,0x18},   // e 0x65 101

         {0x08,0x7e,0x09,0x01,0x02},   // f 0x66 102

         {0x0c,0x52,0x52,0x52,0x3e},   // g 0x67 103

         {0x7f,0x08,0x04,0x04,0x78},   // h 0x68 104

         {0x00,0x44,0x7d,0x40,0x00},   // i 0x69 105

         {0x20,0x40,0x44,0x3d,0x00},   // j 0x6a 106

         {0x00,0x7f,0x10,0x28,0x44},   // k 0x6b 107

         {0x00,0x41,0x7f,0x40,0x00},   // l 0x6c 108

         {0x7c,0x04,0x18,0x04,0x78},   // m 0x6d 109

         {0x7c,0x08,0x04,0x04,0x78},   // n 0x6e 110

         {0x38,0x44,0x44,0x44,0x38},   // o 0x6f 111

         {0x7c,0x14,0x14,0x14,0x08},   // p 0x70 112

         {0x08,0x14,0x14,0x18,0x7c},   // q 0x71 113

         {0x7c,0x08,0x04,0x04,0x08},   // r 0x72 114

         {0x48,0x54,0x54,0x54,0x20},   // s 0x73 115

         {0x04,0x3f,0x44,0x40,0x20},   // t 0x74 116

         {0x3c,0x40,0x40,0x20,0x7c},   // u 0x75 117

         {0x1c,0x20,0x40,0x20,0x1c},   // v 0x76 118

         {0x3c,0x40,0x30,0x40,0x3c},   // w 0x77 119

         {0x44,0x28,0x10,0x28,0x44},   // x 0x78 120

         {0x0c,0x50,0x50,0x50,0x3c},   // y 0x79 121

         {0x44,0x64,0x54,0x4c,0x44},   // z 0x7a 122

         {0x00,0x08,0x36,0x41,0x41},   // { 0x7b 123

         {0x00,0x00,0x7f,0x00,0x00},   // | 0x7c 124

         {0x41,0x41,0x36,0x08,0x00},   // } 0x7d 125

         {0x04,0x02,0x04,0x08,0x04},   // ~ 0x7e 126

     };

  

  

 

  char Display_String[] = "T4TECHZ";

    

  void setup()

  {

    pinMode(DEFAULT_LED, OUTPUT);

    pinMode(INPUT_PIN, INPUT);

    for (int i = 0; i < LED_COUNT; i++)

    {

      pinMode(LED_PINS[i], OUTPUT);    

    }

  }


  

  void loop()

  {

    while(digitalRead(INPUT_PIN) != 0)

    {

     digitalWrite(DEFAULT_LED, LOW); 

    }

    digitalWrite(DEFAULT_LED, HIGH);   


    for (int a=sizeof(Display_String)-1; a>-1; a--)

    {

      PRINT_STRING(Display_String[a]);

    }  

  }

  

 void PRINT_STRING(char data)

  {

    

    if (data < 32 || data > 126)

    {

      data = 32;

    }

    data -= 32;

    

    for (int x=CUSTOM_CHAR_LENGTH-1; x>-1; x--) 

    {

      byte temp_data = CUSTOM_CHAR[data][x];

      for (int y=0; y<LED_COUNT; y++) 

      {

        digitalWrite(LED_PINS[y], bitRead(temp_data,y));

      }

      delayMicroseconds(500);

    }

    

    for ( k = 0; k < LED_COUNT; k++)

    {

      digitalWrite(LED_PINS[k] , LOW);

    }

    delayMicroseconds(250);

  

  }






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