dashboard pour mon auto

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j ais trouver ce code de gros caracters pres a l emploi , mais je ne sais l utiliser #include <LiquidCrystal.h>

LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

byte custchar[8][8] = {
 {
   B11111,
   B11111,
   B11111,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000
 }, {
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B11111,
   B11111,
   B11111
 }, {
   B11111,
   B11111,
   B11111,
   B00000,
   B00000,
   B11111,
   B11111,
   B11111
 }, {
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B01110,
   B01110,
   B01110
 }, {
   B00000,
   B00000,
   B00000,
   B01110,
   B01110,
   B01110,
   B00000,
   B00000
 }, {
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000
 }, {
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000
 }, {
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000,
   B00000
 }
};

byte bignums[10][2][3] = {
 {
   {255, 0, 255},
   {255, 1, 255}
 },{
   {0, 255, 254},
   {1, 255, 1}
 },{
   {2, 2, 255},
   {255, 1, 1}
 },{
   {0, 2, 255},
   {1, 1, 255}
 },{
   {255, 1, 255},
   {254, 254, 255}
 },{
   {255, 2, 2},
   {1, 1, 255}
 },{
   {255, 2, 2},
   {255, 1, 255}
 },{
   {0, 0, 255},
   {254, 255, 254}
 },{
   {255, 2, 255},
   {255, 1, 255}
 },{
   {255, 2, 255},
   {254, 254, 255}
 }
};

void loadchars() {
 lcd.command(64);
 for (int i = 0; i < 8; i++)
   for (int j = 0; j < 8; j++)
     lcd.write(custchar[i][j]);
 lcd.home();
}

void printbigchar(byte digit, byte col, byte row, byte symbol = 0) {
 if (digit > 9) return;
 for (int i = 0; i < 2; i++) {
   lcd.setCursor(col, row + i);
   for (int j = 0; j < 3; j++) {
     lcd.write(bignums[digit][i][j]);
   }
   lcd.write(254);
 }
 if (symbol == 1) {
   lcd.setCursor(col + 3, row + 1);
   lcd.write(3);
 } else if (symbol == 2) {
   lcd.setCursor(col + 3, row);
   lcd.write(4);
   lcd.setCursor(col + 3, row + 1);
   lcd.write(4);
 }
 
 lcd.setCursor(col + 4, row);
}

void setup() {
 int sensorpin_1 = 1;
  int reading_1 = analogRead(sensorpin_1);
  float boost_1 = (reading_1*0.244)*0.01 ;
  float boost =boost_1-1;
 loadchars();
 analogWrite(boost, 1);
 
 printbigchar(0, 0, 0);
 printbigchar(1, 4, 0);
 printbigchar(2, 8, 0);
 printbigchar(3, 12, 0);
 printbigchar(4, 16, 0, 1);
 printbigchar(5, 0, 2);
 printbigchar(6, 4, 2);
 printbigchar(7, 8, 2);
 printbigchar(8, 12, 2);
 printbigchar(9, 16, 2, 2);
 
}

void loop(){