/* send/recieve data to/from vvvv
 * -----------
 *
 * poti --> arduino --> vvvv --> arduino --> control LED
 * 17-01-2006
 * copyleft 2006 benedikt gross
 * 
 * Last edit Westbam 20-08-2009, for new Serial. code.
 *
 */
 
int potPin = 5; // select the input pin for the potentiometer
int ledPin = 13; // select the pin for the LED
int val,serialGet = 0; // variable to store the value coming from the sensor/serial port (from vvvv)
int delaytime = 1; // delay time for the main loop
 
 
void setup() {
pinMode(ledPin, OUTPUT); // declare the ledPin as an OUTPUT
Serial.begin(9600); // use the serial port to send/recieve values to/from the computer
}
 
void loop() {
val = analogRead(potPin); // read the value from the potentiometer
 
Serial.print (val); // print the value to the serial port
//linebreak
Serial.write(10);
Serial.write(13);
 
// read the serial port
serialGet = Serial.read();
 
// if the input is '-1' then there is no data
// at the input, otherwise store it
if (serialGet != -1) {
val = serialGet;
}
 
// if the stored value is 'H' turn the LED on
// if the stored value is 'L' turn the LED off
if (val == 'H') {
digitalWrite(ledPin, HIGH);
}
else if (val == 'L') {
digitalWrite(ledPin, LOW);
}
 
delay(delaytime);
}