Persistence of Vision and Temperature sensor Arduino code



//Reading realtime values of a sensor using persistence of vision typography using the Arduino

// array for displaying numbers or letters

int _[] = {0,0,0,0,0, 0,0,0,0,0, 0,0,0,0,0}; int num1[] = {0,1,0,0,1, 1,1,1,1,1, 0,0,0,0,1}; int num2[] = {1,0,1,1,1, 1,0,1,0,1, 1,1,1,0,1}; int num3[] = {0,1,0,1,0, 1,0,1,0,1, 1,1,1,1,1}; int num4[] = {1,1,1,0,0, 0,0,1,0,0, 1,1,1,1,1}; int num5[] = {1,1,1,0,1, 1,0,1,0,1, 1,0,1,1,1}; int num6[] = {1,1,1,1,1, 1,0,1,0,1, 1,0,1,1,1}; int num7[] = {1,0,0,0,0, 1,0,0,0,0, 1,1,1,1,1}; int num8[] = {1,1,1,1,1, 1,0,1,0,1, 1,1,1,1,1}; int num9[] = {1,1,1,0,1, 1,0,1,0,1, 1,1,1,1,1}; int num0[] = {1,1,1,1,1, 1,0,0,0,1, 1,1,1,1,1}; int dot[] = {0,0,0,0,0, 1,1,0,0,0, 1,1,0,0,0}; int C[] = {1,1,1,1,1, 1,0,0,0,1, 1,0,0,0,1}; int minus[] = {0,0,1,0,0, 0,0,1,0,0, 0,0,1,0,0};

int letterSpace; int dotTime;

int temp; int tempPin = 0;

void setup { Serial.begin(9600);

// setting the ports of the leds to OUTPUT pinMode(2, OUTPUT); pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT);

// defining the space between the letters (ms) letterSpace = 6; // defining the time dots appear (ms) dotTime = 3; }

void printLetter(int letter[]) { int y;  // printing the first y row of the letter for (y=0; y<5; y++) {   digitalWrite(y+2, letter[y]); } delay(dotTime); // printing the second y row of the letter for (y=0; y<5; y++) {   digitalWrite(y+2, letter[y+5]); } delay(dotTime); // printing the third y row of the letter for (y=0; y<5; y++) {   digitalWrite(y+2, letter[y+10]); } delay(dotTime); // printing the sspace between the letters for (y=0; y<5; y++) {   digitalWrite(y+2, 0); } delay(letterSpace); }

void loop {  int ara[2];  //Array to store separate digits of the temperature value. int count=0; int n; //To calculate values from the LM35 temp = analogRead(tempPin); temp = temp * 0.48828125; //Serial.print(temp); if (temp == 0) printLetter(num0); n=temp; //make a copy of the temperature value in another variable. // To calculate the number of digits in the temperature sensor value if (temp > 0) {      while(n!=0) {         n=n/10; ++count; }   }  //to store the digits of the temperature value in an array for(int i=0;i<=count;i++) {         ara[i]=temp%10; temp=temp/10; }  //loop to output the digits stored in the array for(int i=count;i>=0;i--) {    if (ara[i] == 1) printLetter(num1); if (ara[i] == 2) printLetter(num2); if (ara[i] == 3) printLetter(num3); if (ara[i] == 4) printLetter(num4); if (ara[i] == 5) printLetter(num5); if (ara[i] == 6) printLetter(num6); if (ara[i] == 7) printLetter(num7); if (ara[i] == 8) printLetter(num8); if (ara[i] == 9) printLetter(num9); if (ara[i] == 0) printLetter(num0); }  delay(5); printLetter(dot); printLetter(C); }