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[on:]

hello,i`ve just buyed Arduino Mega Kit,but i`ve never worked with it and i want to ask if someone could give me an example program to visualize some data on PC through USB interface...it doesn`t matter what data would be power,current or voltage

thank you !!!

[Reply #1 on:]

Hi  Dimitar.

If you start the arduino IDE, open file->examples->communication->Graph and read the text in that sketch. The sketch also gives code for processing (http://processing.org/) and Max/MSP as programs for on your computer.

Jeroen

[Reply #2 on:]

Thank you for the previous info. I saw the materials witch you point me but because I'm a beginner I couldn't handle myself.If this doesn't bother you could you give me the program ( code) and its algorithm with witch to visualize the value of Power.

[Reply #3 on:]

I (we) will help you with problems as they arise but i will not write your code.

...witch to visualize the value of Power.

Power of what? Can you explain what it is that you want to accomplish?

Jeroen

[Reply #4 on:]

i want to visualize on my pc connected to the  board with usb interface voltage from some analog input

[Reply #5 on:]

Ok. If you try what i explained in reply 1 what is the first problem you have?

Jeroen

[Reply #6 on:]

i can`t find the source code(program) to visualize voltage

[Reply #7 on:]

It's between

/* Processing code for this example

and

xPos++;
 }
 }
 }
 
 */

In the arduino sketch i pointed you to.

You should copy/paste that to the processing program on the pc and remove what is highlighted below.

[glow]/* Processing code for this example[/glow]
..
..
..
..
 // increment the horizontal position:
 xPos++;
 }
 }
 }
 
 [glow]*/[/glow]

Probably a better advice would be to experiment with some (all) of the examples (like digital->blink) before you do a 'full project' to learn some programming/syntax.  While it seems that that doesn't help you with your goal it is actually vitally important.

Jeroen

[Reply #8 on:]

is this the program(cod) I need to visiolize the voltage

/* Processing code for this example
 
 // Graphing sketch
 
 
 // This program takes ASCII-encoded strings
 // from the serial port at 9600 baud and graphs them. It expects values in the
 // range 0 to 1023, followed by a newline, or newline and carriage return
 
 // Created 20 Apr 2005
 // Updated 18 Jan 2008
 // by Tom Igoe
 
 import processing.serial.*;
 
 Serial myPort;        // The serial port
 int xPos = 1;         // horizontal position of the graph
 
 void setup () {
 // set the window size:
 size(400, 300);        
 
 // List all the available serial ports
 println(Serial.list());
 // I know that the first port in the serial list on my mac
 // is always my  Arduino, so I open Serial.list()[0].
 // Open whatever port is the one you're using.
 myPort = new Serial(this, Serial.list()[0], 9600);
 // don't generate a serialEvent() unless you get a newline character:
 myPort.bufferUntil('\n');
 // set inital background:
 background(0);
 }
 void draw () {
 // everything happens in the serialEvent()
 }
 
 void serialEvent (Serial myPort) {
 // get the ASCII string:
 String inString = myPort.readStringUntil('\n');
 
 if (inString != null) {
 // trim off any whitespace:
 inString = trim(inString);
 // convert to an int and map to the screen height:
 float inByte = float(inString);
 inByte = map(inByte, 0, 1023, 0, height);
 
 // draw the line:
 stroke(127,34,255);
 line(xPos, height, xPos, height - inByte);
 
 // at the edge of the screen, go back to the beginning:
 if (xPos >= width) {
 xPos = 0;
 background(0);
 }
 else {
 // increment the horizontal position:
 xPos++;
 }
 }
 }
 
 */

[Reply #9 on:]

Yep. That's the code to paste in processing on your pc. Remember to remove the lines that are highlighted in reply 7.

Jeroen

edit: If you post code please use the #-button.

[Reply #10 on:]

is this the program(cod) ?


// Graphing sketch


// This program takes ASCII-encoded strings
// from the serial port at 9600 baud and graphs them. It expects values in the
// range 0 to 1023, followed by a newline, or newline and carriage return

// Created 20 Apr 2005
// Updated 18 Jan 2008
// by Tom Igoe

import processing.serial.*;

Serial myPort;        // The serial port
int xPos = 1;         // horizontal position of the graph

void setup () {
// set the window size:
size(400, 300);        

// List all the available serial ports
println(Serial.list());
// I know that the first port in the serial list on my mac
// is always my  Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[0], 9600);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
// set inital background:
background(0);
}
void draw () {
// everything happens in the serialEvent()
}

void serialEvent (Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');

if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int and map to the screen height:
float inByte = float(inString);
inByte = map(inByte, 0, 1023, 0, height);

// draw the line:
stroke(127,34,255);
line(xPos, height, xPos, height - inByte);

// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
}
else {
// increment the horizontal position:
xPos++;
}
}
}

[Reply #11 on:]

Have you tried? What did it do?
You actually have to do something yourself.

Jeroen

[Reply #12 on:]

I haven't got any knowledge of this program but I've been assign a task to visualize the voltage. Can I use a ready code from somewhere, coz I can't write it by myself.

[Reply #13 on:]

If you spend a couple of hours reading the examples in the arduino IDE and processing IDE you will have the knowledge to do what you want by copy/pasting.  

If you don't want to do that then the simplest way of 'visualize the voltage' will probably a multimeter.



Jeroen