Arduino code and circuit diagram for electronic voting machine

   

  Circuit Diagram 

CODE

#include<LiquidCrystal.h>
LiquidCrystal lcd(11,10,9,8,7,6);
#define sw1 A0
#define sw2 A1
#define sw3 A2
#define sw4 17
#define sw5 18
int vote1=0;
int vote2=0;
int vote3=0;
int vote4=0;
void setup()
{
pinMode(sw1, INPUT);
pinMode(sw2,INPUT);
pinMode(sw3,INPUT);
pinMode(sw4,INPUT);
pinMode(sw5,INPUT);
pinMode(13,OUTPUT);
pinMode(12,OUTPUT);

lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print(" SUFIAN'S TECH");
lcd.setCursor(0,1);
lcd.print("   STATION");
lcd.setCursor(0,0);
delay(1000);
lcd.print("   ELECTRONIC ");
lcd.setCursor(0,1);
lcd.print(" VOTING MACHINE");
delay(1000);
digitalWrite(sw1, HIGH);
digitalWrite(sw2, HIGH);
digitalWrite(sw3, HIGH);
digitalWrite(sw4, HIGH);
digitalWrite(sw5, HIGH);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("AA");
lcd.setCursor(4,0);
lcd.print("BB");
lcd.setCursor(8,0);
lcd.print("CC");
lcd.setCursor(12,0);
lcd.print("DD");
}
void loop()
{
lcd.setCursor(0,0);
lcd.print("AA");
lcd.setCursor(1,1);
lcd.print(vote1);
lcd.setCursor(4,0);
lcd.print("BB");
lcd.setCursor(5,1);
lcd.print(vote2);
lcd.setCursor(8,0);
lcd.print("CC");
lcd.setCursor(9,1);
lcd.print(vote3);
lcd.setCursor(12,0);
lcd.print("DD");
lcd.setCursor(13,1);
lcd.print(vote4);

if(digitalRead(sw1)==0)
{ digitalWrite(12,HIGH);
vote1++;
while(digitalRead(sw1)==0);
digitalWrite(12,LOW);
delay(1000);

}

if(digitalRead(sw2)==0)
{

vote2++;
digitalWrite(12,HIGH);
while(digitalRead(sw2)==0);
digitalWrite(12,LOW);
delay(1000);

}

if(digitalRead(sw3)==0)
{
digitalWrite(12,HIGH);
vote3++;
while(digitalRead(sw3)==0);
digitalWrite(12,LOW);
delay(1000);
}

if(digitalRead(sw4)==0)
{
digitalWrite(12,HIGH);
vote4++;
while(digitalRead(sw4)==0);
digitalWrite(12,LOW);
delay(1000 );
}
if(digitalRead(sw5)==0)
{
digitalWrite(13,HIGH);
int vote=vote1+vote2+vote3+vote4;
if(vote)
{
if((vote1 > vote2 && vote1 > vote3 && vote1 > vote4))
{
lcd.clear();
lcd.print("AA Win");
delay(5000);
lcd.clear();
}
else if((vote2 > vote1 && vote2 > vote3 && vote2 > vote4))
{
lcd.clear();
lcd.print("BB Win");
delay(5000);
lcd.clear();
}
else if((vote3 > vote1 && vote3 > vote2 && vote3 > vote4))
{
lcd.clear();
lcd.print("CC Win");
delay(5000);
lcd.clear();
}
else if(vote4 > vote1 && vote4 > vote2 && vote4 > vote3)
{
lcd.setCursor(0,0);
lcd.clear();
lcd.print("DD Win");
delay(5000);
lcd.clear();
}
else if(vote4 > vote1 && vote4 > vote2 && vote4 > vote3)
{
lcd.setCursor(0,0);
lcd.clear();
lcd.print("DD Win");
delay(2000);
lcd.clear();
}

else
{
lcd.clear();
lcd.print("     TIE ");
lcd.setCursor(0,1);
lcd.print(" NO ONE WIN ");
delay(5000);
lcd.clear();
}

}
else
{
lcd.clear();
lcd.print("No Vote!!  ");
delay(5000);
lcd.clear();
}
vote1=0;vote2=0;vote3=0;vote4=0,vote=0;
lcd.clear();
digitalWrite(12,HIGH);
digitalWrite(13,LOW);
}

}