Simple 1 bit 7-segment LED counter

/*

counter

created 2011/05/18

Sudip Shrestha

Sulav Timsina

*/

int count=0;

int delay_val=1000;

// The setcountup() method runs once, when the sketch starts

void setup() {

// initialize the digital pin as an output:

pinMode(12, OUTPUT);

pinMode(11, OUTPUT);

pinMode(10, OUTPUT);

pinMode(9, OUTPUT);

pinMode(8, OUTPUT);

pinMode(7, OUTPUT);

pinMode(6, OUTPUT);

}

// the loop() method runs over and over again,

// as long as the Arduino has power

void loop()

{

switch (count) {

case 0:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, LOW);

digitalWrite(10, LOW);

digitalWrite(9, HIGH);

delay(delay_val);

//do something when var equals 1

break;

case 1:

digitalWrite(11, HIGH);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, HIGH);

digitalWrite(6, HIGH);

digitalWrite(10, HIGH);

digitalWrite(9, HIGH);

delay(delay_val);

//do something when var equals 2

break;

case 2:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, HIGH);

digitalWrite(7, LOW);

digitalWrite(6, LOW);

digitalWrite(10, HIGH);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 3:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, HIGH);

digitalWrite(10, HIGH);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 4:

digitalWrite(11, HIGH);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, HIGH);

digitalWrite(6, HIGH);

digitalWrite(10, LOW);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 5:

digitalWrite(11, LOW);

digitalWrite(12, HIGH);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, HIGH);

digitalWrite(10, LOW);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 6:

digitalWrite(11, LOW);

digitalWrite(12, HIGH);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, LOW);

digitalWrite(10, LOW);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 7:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, HIGH);

digitalWrite(6, HIGH);

digitalWrite(10, HIGH);

digitalWrite(9, HIGH);

delay(delay_val);

//do something when var equals 2

break;

case 8:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, LOW);

digitalWrite(10, LOW);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

case 9:

digitalWrite(11, LOW);

digitalWrite(12, LOW);

digitalWrite(8, LOW);

digitalWrite(7, LOW);

digitalWrite(6, HIGH);

digitalWrite(10, LOW);

digitalWrite(9, LOW);

delay(delay_val);

//do something when var equals 2

break;

}

if (count > 9)

{

count=0;

//action A

}

else

{

count=count+1;

// action B

}

}