Hands on with arduino kit - simple serial communication between Processing and arduino board. Also use of photo sensors.
# Program 1 - Serial Communication
ArduIno Code
int[] outputPins = {2,3,4,5}
int val;
int count=4;
void setup()
{
Serial.begin(9600);
for(int i=0;i<count;i++)
{
pinMode(outputPins[i], OUTPUT); // initialize pins 2 3 4 and 5 for output
}
}
void loop()
{
if (Serial.available()) {
val = Serial.read();
switch(val){
case 'A':digitalWrite(outputPins[0], HIGH);
break;
case 'B':digitalWrite(outputPins[0], HIGH);
break;
case 'C':digitalWrite(outputPins[0], HIGH);
break;
case 'D':digitalWrite(outputPins[0], HIGH);
break;
} // end switch
} // end if
} // end loop
Processing Code
// For passing info to ArduIno - define 2 ports
import processing.serial.*;
Serial port;
void setup()
{
size(400,400);
noStroke();
background(300);
port=new Serial(this,Serial.list()[0],9600); // Port
}
int count = 0;
void draw() {
if(keyPressed) {
switch(key){
case 'a':
port.write('A');
break;
case 'b' :
port.write('B');
break;
case 'c' :
port.write('C');
break;
case 'd' :
port.write('D');
break;
}
//rect(25, 25, 50, 50);
}
}
# Program 2 - Photo Sensor
int inputPin = 4; // input pin for the photoresistor
int ledPin = 13; // pin for the LED
int val = 0; // value from the sensor
void setup() {
pinMode(ledPin, OUTPUT); // declare the ledPin as an OUTPUT
}
void loop() {
val = analogRead(inputPin); // read the value from the sensor
analogWrite(ledPin, val/2); // turn the ledPin on
delay(100); // stop the program for some time
analogWrite(ledPin, val/2); // turn the ledPin off
delay(100); // stop the program for some time
}
