hey
i was wondering how to control 4 or 5 leds, buy turning them off and on with a computer program, preferably using eclipse to make the computer program how is this accomplished.
thanks john
Don't know anything about eclipse, but this is exactly what the Standard_Firmata is for. You would need to install processing http://processing.org/ (which the arduino IDE is based on btw), and the firmata library in the processing sketchbook Arduino Playground - Processing. And (of course) an arduino running Standard_Firmata on its end (should be included in Examples - Firmata menu).
Btw, seems like Firmata can be used with a lot of other languages too (I've just barely touched it with processing): Main Page - Firmata
I would use Visual Basic app builder for this. It would be simple to create this program by editing example programs on the website.
well i took on processing, and its amazing because i can put it into eclipse. with eclipse i can use C++ to program the innards of a Java based look and well it has so far been grate. since i use Ubuntu it makes it really easie to use and implament a program that can pretty much any thing i can come up with.
heres what i have so far.
this is processing code:
import processing.serial.*;
Serial myPort;
int val;
int rectX1 = 0,rectY1 = 0;
int rectwidth1 = 320;
int recthight1 = 240;
int rectX2 = 320,rectY2 = 0;
int rectwidth2 = 319;
int recthight2 = 240;
int rectX3 = 0,rectY3 = 240;
int rectwidth3 = 320;
int recthight3 = 240;
int rectX4 = 320,rectY4 = 240;
int rectwidth4 = 319;
int recthight4 = 240;
PFont fontA;
void setup()
{
size(640,480);
smooth();
String portName = Serial.list()[0];
myPort = new Serial(this, portName, 9600);
fontA = loadFont("CourierNew36.vlw");
textAlign(CENTER);
textFont(fontA, 20);
background(255);
}
void draw()
{
stroke(0);
fill(5,15,255);
rect(rectX1, rectY1, rectwidth1, recthight1);
fill(0,0,0);
text("BLUE ON",rectwidth1 / 2,recthight1 / 2);
if ( overRect1(rectX1, rectY1, rectwidth1, recthight1) )
{
if (mousePressed)
{
myPort.write('0');
}
}
else
{
myPort.write('5');
}
stroke(0);
fill(255,0,0);
rect(rectX2, rectY2, rectwidth2, recthight2);
fill(0,0,0);
text("RED ON",rectwidth2 + rectwidth2 / 2,recthight2 / 2);
if ( overRect2(rectX2, rectY2, rectwidth2, recthight2) )
{
if (mousePressed)
{
myPort.write('1');
}
}
else
{
myPort.write('6');
}
stroke(0);
fill(0,255,0);
rect(rectX3, rectY3, rectwidth3, recthight3);
fill(0,0,0);
text("GREEN ON",rectwidth3 / 2,recthight3 + (rectwidth3 / 2)-20);
if ( overRect3(rectX3, rectY3, rectwidth3, recthight3) )
{
if (mousePressed)
{
myPort.write('2');
}
}
else
{
myPort.write('7');
}
stroke(0);
fill(255,255,255);
rect(rectX4, rectY4, rectwidth4, recthight4);
fill(0,0,0);
text("WHITE ON",rectwidth4 + (rectwidth4 / 2),recthight4 + (rectwidth4 / 2) - 20);
if ( overRect4(rectX4, rectY4, rectwidth4, recthight4) )
{
if (mousePressed)
{
myPort.write('3');
}
}
else
{
myPort.write('8');
}
}
boolean overRect1(int x, int y, int width, int height)
{
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
boolean overRect2(int x, int y, int width, int height)
{
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
boolean overRect3(int x, int y, int width, int height)
{
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
boolean overRect4(int x, int y, int width, int height)
{
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
here's the arduino code:
int val; // Data received from the serial port
int ledPin1 = 12; // Set the pin to digital I/O 4
int ledPin2 = 11;
int ledPin3 = 9;
int ledPin4 = 10;
void setup()
{
pinMode(ledPin1, OUTPUT); // Set pin as OUTPUT
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
pinMode(ledPin4, OUTPUT);
Serial.begin(9600); // Start serial communication at 9600 bps
}
void loop()
{
if (Serial.available())
{ // If data is available to read,
val = Serial.read(); // read it and store it in val
}
if (val == '0')
{ // If H was received
digitalWrite(ledPin1, HIGH); // turn the LED on
}
if (val == '5')
{
digitalWrite(ledPin1, LOW); // Otherwise turn it OFF
}
if (val == '1')
{ // If H was received
digitalWrite(ledPin2, HIGH); // turn the LED on
}
if (val == '6')
{
digitalWrite(ledPin2, LOW); // Otherwise turn it OFF
}
if (val == '2')
{ // If H was received
digitalWrite(ledPin3, HIGH); // turn the LED on
}
if (val == '7')
{
digitalWrite(ledPin3, LOW); // Otherwise turn it OFF
}
if (val == '3')
{ // If H was received
digitalWrite(ledPin4, HIGH); // turn the LED on
}
if (val == '8')
{
digitalWrite(ledPin4, LOW); // Otherwise turn it OFF
}
delay(1); // Wait 10 milliseconds for next reading
}
here's what the program looks like and turns on all the LEDs on at a time.