Arduino and 7-segment display Interfacing

Interfacing Seven Segment Display with Arduino

Circuit:

Pin Configuration:

See Also: Arduino Development Platform

Code in Action:

Code to upload:

const int a = 2;

const int b = 3;

const int c = 4;

const int d = 5;

const int e = 6;

const int f = 7;

const int g = 8;

const int dec = 9;

void setup() {

     pinMode(a, OUTPUT);

     pinMode(b, OUTPUT);

     pinMode(c, OUTPUT);

     pinMode(d, OUTPUT);

     pinMode(e, OUTPUT);

     pinMode(f, OUTPUT);

     pinMode(g, OUTPUT);

     pinMode(dec, OUTPUT);

}

void loop() {

    disp(0,0,0,0,0,0,1,0);  // digit 0 and decimal point

    delay(500);           

    disp(1,0,0,1,1,1,1,1);  // digit 1

    delay(500);

    disp(0,0,1,0,0,1,0,1);  // digit 2

    delay(500); 

    disp(0,0,0,0,1,1,0,1);  // digit 3

    delay(500);

    disp(1,0,0,1,1,0,0,1);  // digit 4

    delay(500);

    disp(0,1,0,0,1,0,0,1);  // digit 5

    delay(500);

    disp(0,1,0,0,0,0,0,1);  // digit 6

    delay(500);

    disp(0,0,0,1,1,1,1,1);  // digit 7

    delay(500);

    disp(0,0,0,0,0,0,0,1);  // digit 8

    delay(500);

    disp(0,0,0,0,1,0,0,1);  // digit 9

    delay(500);

}

void disp(int sa,int sb, int sc, int sd, int se, int sf, int sg, int sdec)  {

    digitalWrite(a,sa);

    digitalWrite(b,sb);

    digitalWrite(c,sc);

    digitalWrite(d,sd);

    digitalWrite(e,se);

    digitalWrite(f,sf);

    digitalWrite(g,sg);

    digitalWrite(dec,sdec);

  }

See Also: Arduino Development Platform