int coilSetOne = 0;
int coilSetTwo = 1;
int coilSetThree = 2;
int coilSetFour = 3;
int switchInput = 4;

void setup()
{
  pinMode(coilSetOne, OUTPUT);
  pinMode(coilSetTwo, OUTPUT);
  pinMode(coilSetThree, OUTPUT);
  pinMode(coilSetFour, OUTPUT);
  pinMode(switchInput, INPUT);
}

void loop()
{
var switchMode = digitalRead(switchInput)
	if ( switchMode == HIGH ) {
		digitalWrite(coilSetOne, HIGH);
		delay(20);
		digitalWrite(coilSetOne, LOW);
		delay(10);
		digitalWrite(coilSetTwo, HIGH);
		delay(20);
		digitalWrite(coilSetTwo, LOW);
		delay(10);
		digitalWrite(coilSetThree, HIGH);
		delay(20);
		digitalWrite(coilSetThree, LOW);
		delay(10);
		digitalWrite(coilSetFour, HIGH);
		delay(20);
		digitalWrite(coilSetFour, LOW);
}}