[TriEmbed] Arduino Topic for Dec 7 Meeting?

Mon Dec 1 21:47:39 CST 2014

I'm a newbie and going through the Simon Monk book, "Programming Arduino
Getting Started with Sketches". I am stuck on chapter 10, "Arduino Ethernet
Programming". I have tried numerous things to get the Arduino to act as a
server but it just won't connect. I'm running Windows 7 on my PC and I have
a Netgear router for my wireless router with 4 wired ports. I've plugged the
RJ45 into the router and my PC and tried different IP addresses that are not
taken by my router already but nothing works. I cut off the firewall once
but that didn't help. I replaced the Ethernet shield and the UNO but that
didn't help. I'm trying to run the simplest code as best I can tell which is
the Monk example code 10-01 copied below for reference:

// sketch 10-01 Simple Server Example

#include <SPI.h>

#include <Ethernet.h>

// MAC address just has to be unique. This should work

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

// The IP address will be dependent on your local network:

byte ip[] = { 192, 168, 1, 30 };

EthernetServer server(80);

void setup()

{

  Ethernet.begin(mac, ip);

  server.begin();

  Serial.begin(9600);

}

void loop()

{

  // listen for incoming clients

  EthernetClient client = server.available();

  if (client) 

  {

    while (client.connected()) 

    {

      // send a standard http response header

      client.println("HTTP/1.1 200 OK");

      client.println("Content-Type: text/html");

      client.println();

      // send the body

      client.println("<html><body>");

      client.println("<h1>Arduino Server</h1>");

      client.print("<p>A0="); 

      client.print(analogRead(0)); 

      client.println("</p>"); 

      client.print("<p>millis="); 

      client.print(millis()); 

      client.println("</p>"); 

      client.println("</body></html>");

      client.stop();

    }

    delay(1);

  }

}

One potential thing I have not covered is the power supply. I'm unplugging
the USB as instructed in the book and plugging in a 9 Volt battery pack -
all I have right now for power. I have a 9 Volt 1.5 Amp power supply on
order to get here Friday. I'm not sure if that is a problem or not. 

I'm running Arduino IDE 1.0.4. The board is Arduino UNO and the Ethernet
shield is made by Seeed. 

If this is something someone with more experience could talk about at the
meeting I definitely have an interest. I have looked online for solutions
but nothing so far has worked. If this topic does not serve the group well,
I understand, but maybe someone who has knowledge of this could just give me
some directions to get me back on the right path. 

Thanks! 

Dwight

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