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I am completley new to the arduino, dont even have one yet, but eager to start soon. one question that i have, and it's mostly software related. Using the arduino uno with a ethershield, can data from a weather station be uploaded to wunderground.com as personal weather station data? Here is the pws upload protocol...

http://wiki.wunderground.com/index.php/PWS_-_Upload_Protocol

Like i said, i am really new to the arduino, but have been working with the propeller for quite awhile, so i think my transition will be fairly painless. is there code examples that would show me how to do this? Thanks in advance!

I am completley new to the arduino, dont even have one yet, but eager to start soon. one question that i have, and it's mostly software related. Using the arduino uno with a ethershield, can data from a weather station be uploaded to wunderground.com as personal weather station data? Here is the pws upload protocol...

http://wiki.wunderground.com/index.php/PWS_-_Upload_Protocol

Like i said, i am really new to the arduino, but have been working with the propeller for quite awhile, so i think my transition will be fairly painless. is there code examples that would show me how to do this? Thanks in advance!

That should be fairly straightforward.  Grab the arduino ethernet library here: http://arduino.cc/en/Reference/Ethernet

You'll need to have the IP of the weatherunderground server, you can find that with an http://who.is lookup.  Then connect to that server as a client:

byte mac[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; //put your mac here
byte ip[] = { 00, 0, 0, 000 }; //put your IP here

byte server[] = { 00, 00, 00, 00 }; // Put the IP of weather underground here.

Client client(server, 80); // create a client object

in the setup function:

Ethernet.begin(mac, ip);

Then you can send an update in the loop using the info on the weather underground wiki:

client.println("GET /weatherstation/updateweatherstation.php?action=something&id=something&PASSWORD=something&....");

Hope that helps!  PS.  I also used the propeller before the arduino!

Hi Jeremy,

Am building an automatic railway gate control and track switching using the arduino Uno.

Need help with programming an IR transmitter and receiver circuit to send a signal to a stepper motor when there is a interruption between the transmitter and receiver allowing the stepper motor to rotate in particular direction and retrun to the intial state after some seconds. During this process, an LED will switch to red to prevent motorist from crossing the railway.

I already have a canakit stepper motor and easy driver stepper motor.

Thanks.

//define pins. I used pins 4 and 5

#define irLedPin 4          // IR Led on this pin

#define irSensorPin 5       // IR sensor on this pin

int irRead(int readPin, int triggerPin); //function prototype

void setup()

{

  pinMode(irSensorPin, INPUT);

  pinMode(irLedPin, OUTPUT);

  Serial.begin(9600);

  // prints title with ending line break

  Serial.println("Program Starting");

  // wait for the long string to be sent

  delay(100);

}

void loop()

{ 

              //  call a StreetLights() function here if you wish

                   // or at end of the setup()

  if (irRead(irSensorPin, irLedPin))=0

  {

     lowerCrossingGate();

  }

}

void lowerCrossingGate()

{

                         // turn on traffic light code here

                        //  put motor control code here

               //  here is a tutorial for steppers that may help you:

               //  http://www.arduino.cc/en/Tutorial/StepperUnipolar

                         // turn off traffic light after motor position reversed

}

/******************************************************************************

* This function can be used with a panasonic pna4602m ir sensor

* it returns a zero if something is detected by the sensor, and a 1 otherwise

* The function bit bangs a 38.5khZ waveform to an IR led connected to the

* triggerPin for 1 millisecond, and then reads the IR sensor pin to see if

* the reflected IR has been detected

******************************************************************************/

int irRead(int readPin, int triggerPin)

{

  int halfPeriod = 13; //one period at 38.5khZ is aproximately 26 microseconds

  int cycles = 38; //26 microseconds * 38 is more or less 1 millisecond

  int i;

  for (i=0; i <=cycles; i++)

  {

    digitalWrite(triggerPin, HIGH);

    delayMicroseconds(halfPeriod);

    digitalWrite(triggerPin, LOW);

    delayMicroseconds(halfPeriod - 1);     // - 1 to make up for digitaWrite overhead   

  }

  return digitalRead(readPin);

}

Modified from original Source:  http://www.arduino.cc/playground/Main/PanasonicIrSensor

-= Syntax Matters =-

Thanks. I'll try this out.

I try to build the Hydrogen generator, I need to build the unit power up grade the power supply to generator from 12 volt to higher with pulse .

I want to have the voltage high like ignition coil voltage of the engine . What's unit do I need to build it  ?

Thanks

Dara Cheng

cproduct@aol.com

how to use this code for windows-7 ?

Chapter 10 Arduino Ethernet Programming

in  Programming Arduino Getting Started with Sketches by Simon Monk.

Also seek out the support files for ethernet shield vendors like spartfun and adafruit.

I am facing problem with my processing code.

BASIC LOGIC-If we take our cursor into the rectangle (created by using processing1.5.1)LED connected to arduino board toggles it's state.

I am using Arduino MEAGA 2560.This is my arduino code...

"

int outputPin = 12;

int val;

void setup()

{

  Serial.begin(9600);

  pinMode(outputPin, OUTPUT);

  Serial.println("START");

}

void loop()

{

  if (Serial.available())

  {

    val = Serial.read();

    if (val == 'H')

    {

      Serial.println("I have received 1");

      digitalWrite(outputPin, HIGH);

    }

    if (val == 'L')

    {

      Serial.println("I have received 0");

      digitalWrite(outputPin, LOW);

    }

   }

}

"

It works correctly when tried through serial monitor.I have given 'H' or 'L' via serial monitor ,it works.

But It is not working with processing code.....

"

// Demonstrates how to send data to the Arduino I/O board, in order to

// turn ON a light if the mouse is over a rectangle and turn it off

// if the mouse is not.

import processing.serial.*;

Serial port;

void setup()

{

size(200, 200);

noStroke();

frameRate(10);

// List all the available serial ports in the output pane.

// You will need to choose the port that the Arduino board is

// connected to from this list. The first port in the list is

// port #0 and the third port in the list is port #2.

println(Serial.list());

// Open the port that the Arduino board is connected to (in this case #0)

// Make sure to open the port at the same speed Arduino is using (9600bps)

port = new Serial(this, Serial.list()[0], 9600);

//port = new Serial(this, "COM7", 9600);

}

// function to test if mouse is over square

boolean mouseOverRect()

{

return ((mouseX >= 50)&&(mouseX <= 150)&&(mouseY >= 50)&(mouseY <= 150));

}

void draw()

{

background(#222222);

if(mouseOverRect()) // if mouse is over square

{

fill(#BBBBB0); // change color

port.write('H'); // send an 'H' to indicate mouse is over square

} else {

fill(#666660); // change color

port.write('L'); // send an 'L' otherwise

}

rect(50, 50, 100, 100); // draw square

}

"

PORT selection is correct .

Rectangle do changes color when cursor is taken in i.e. if case is satisfied.

Other processing code works well thus no problem with software.

Wow. 

Q: where does the Serial.println("I have received 0"); string get printed?

That would have to be in the Processing Window because the Arduino Serial Monitor cannot be open at the same time.

If you have the Serial Monitor open, close it, and keep it closed whenever Processing is running.

Hope this helps.

I am using either processor window or arduino serial monitor ,one at a time only.

'serialprint' was just to check arduino program conditions.

Is there any other possible problem?My plan is to use the computer mouse to control bot direction.But my processing code is not helping me out.

thank you very much  for reply.