Arduino control of LED

Here is code to control the intensity of an LED using Arduino.

	// control intensity of LED using serial communication
	int incomingByte = 0; // for incoming serial data
	int outVal = 0; // for signal out
	int pwmPin = 6; // white wire (pin 5 and 6 have pwm frequency ~1000 Hz, faster than pin 9)
	int statusLED = 13;
	int delaymsec = 100;
	void setup() {
	Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
	// initialize pwm and dir pins as outputs.
	pinMode(pwmPin, OUTPUT);
	pinMode(statusLED, OUTPUT); // status LED
	}
	void loop() {
	// check for incoming serial data:
	if (Serial.available() > 0) {
	// read the incoming byte:
	incomingByte = int(Serial.read()) - 48;
	}
	if ((incomingByte >= 0) && (incomingByte <= 5)){
	if (incomingByte > 0) {digitalWrite(statusLED,HIGH);}
	else {digitalWrite(statusLED,LOW);}
	outVal = map(incomingByte, 0, 5, 0, 255);
	analogWrite(pwmPin, outVal);
	delay(delaymsec);
	}
	}

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