Ethernet Shield LED SERVER

Hey guys, in this instructable I will show how simple is to control things over the Internet using a few things like a Arduino Board, an Ethernet Shield and some LEDs to show the results. The arduino will emulate a Web Server and after receives some command will turn on or off the LED.

UPDATE 23/09/2011
Works on arduino IDE 0021

Step 1 What we gonna need?

- Arduino Board
- Ethernet Shield ( with wiznet chip version)
- Led Board (use an old led board from a POV circuit)
- Wires

Comments

[silverbullet]

Olá, eu consegui carregar o código com sucesso, mas não consigo acessar a página. ao digitar o ip eu só obtenho página não encontrada. eu testei pingar o ip e ele responde.

ficquei com dúvida também sobre o mac adress, eu posso adotar o que está no seu código?

[otaviousp]

Voce alterou o IP do programa para o ip que voce usa na sua Rede?

Por exemplo, tem gente que usa 192.168.0.xxx outros usam 192.168.1.xxx ou ate mesmo 10.1.1.xxx.

Verifica se o IP que ta no programa do arduino nao ta conflitando com outra maquina na rede.

E por fim, o MAC voce pode alterar ou deixar o mesmo. Como esta dando problema, mudo o endereco tbm.

Se nao der certo de novo. Me avise.

[sapc]

it keeps giving me this error
sketch_may29a.cpp: In function 'void loop()':
sketch_may29a:84: error: 'class String' has no member named 'append'
sketch_may29a:84: error: expected `;' before '{' token
sketch_may29a:89: error: 'class String' has no member named 'contains'
sketch_may29a:97: error: 'class String' has no member named 'contains'
sketch_may29a:105: error: 'class String' has no member named 'contains'
sketch_may29a:113: error: 'class String' has no member named 'contains'
sketch_may29a:122: error: 'class String' has no member named 'contains'
sketch_may29a:124: error: cannot convert 'String' to 'char*' for argument '1' to 'char* strcpy(char*, const char*)'
sketch_may29a:152: error: expected `}' at end of input
sketch_may29a:152: error: expected `}' at end of input
sketch_may29a:152: error: expected `}' at end of input

and i have WStrings and led libraries installed

[sourcery]

Hello Otaviousp, Thank you for this tutorial, I am currently rewriting it without the twittercode and with loads of comments so me (and others looking at it) will understand more what happens in the code :) I wonder though, you have two switch commands doing seemingly the same thing, switch(i) (with four cases) and then below switch(led) with four cases. What does the second switch do? Is it just for writing to Twitter? And thanks again for the code! :)

[luifil]

Hello Sourcery,
could you post me the sketch without the twittercode please? Or where could I find it?

Thanks a lot. :)

[otaviousp]

First of all, sorry take to long to answer you. And you are right, the second switch(led) is just to send a message to twitter. Cya

[marloncosta]

Hi, thanks for the great presentatio. I'm having trouble seeing the same html page. I'm getting a page but I can't see the little circles to turn ON and OFF. In general the format of the page is not the same as your by far. Any idea why this maybe happening? Thanks

[Istarian]

Where can I get the LED.h file indicated in the sketch? I have arduino-0017 but that doesn't seem to include it.

[otaviousp]

Here is the link, www.arduino.cc/playground/Code/LED

[Istarian]

Thank you very much. :)

[kryptekdta]

Kick *** work!
It was more easy to understand as I'm trying to control a servo with the ethernet shield as soon I was hoping to receive it today but SF  was slow since holiday week!  But oh well!  But great project you did have a good one!

[BES105]

At Last something one can do with good info and instructions. Easy... easy... will try this and add a circuit to control relays to switch other things.... Thanks for a straight forward presentation.

[otaviousp]

Thank you for the positive comment, soon I will try to do this on my house. xD

[segwaymonkey]

Hey, your sketch looks amazing!! Just one question, I don't have, and I can't find the Wstring.h anywhere.. Any idea where i can download it?

[otaviousp]

This is the string library from arduino, just go to this link and download it.
http://arduino.cc/en/Tutorial/TextString

[idogis1]

Thanks. I've been doing research for an IP controlled remote control and decided that the arduino is the best way to go, but I don't know C++ and I couldn't find any sample code. Once again, thanks.

[otaviousp]

I will try to find something and then I will send a PM to you. Welcome to the arduino community, xD