public void setDutyCycle(int duty) {
		switch (duty) {
		case 0 : dutyCycle = 1;
		break;
		case 1 : dutyCycle = 2;
		break;
		case 2 : dutyCycle = 4;
		break;
		case 3 : dutyCycle = 6;
		break;
		}
		//  System.out.println(dutyCycle);
	}