{"id":105,"date":"2014-01-11T14:02:46","date_gmt":"2014-01-11T13:02:46","guid":{"rendered":"http:\/\/wordpress.igua.es\/?p=105"},"modified":"2014-01-11T14:04:03","modified_gmt":"2014-01-11T13:04:03","slug":"control-domotico-con-arduino","status":"publish","type":"post","link":"https:\/\/wordpress.igua.es\/index.php\/2014\/01\/11\/control-domotico-con-arduino\/","title":{"rendered":"Control dom\u00f3tico con Arduino"},"content":{"rendered":"

Muy buenas! Hoy vamos a ver c\u00f3mo podemos realizar un peque\u00f1o y sencillo proyecto de control dom\u00f3tico con el Arduino, en primer lugar vamos a ver los componentes necesarios para el tutorial:<\/p>\n

    \n
  1. Placa Arduino Uno Rev 3.<\/li>\n
  2. Shield Ethernet.<\/li>\n
  3. Placa de Rel\u00e9 de 250V 10A.<\/li>\n
  4. Kit de PLC (Opcional, eso nos permite que no se vean los cables de red en el shield de Ethernet).<\/li>\n
  5. Terminaci\u00f3n de conector a red el\u00e9ctrica.<\/li>\n
  6. Cables varios.<\/li>\n<\/ol>\n

    <\/p>\n

    En primer lugar vamos a usar la terminaci\u00f3n de conector a red el\u00e9ctrica para ponerle los cables y dejarlo ya cerrado de tal forma que lo podamos atornillar a la placa de reles, de tal forma que quedar\u00e1 como en la imagen:<\/p>\n

    \"Terminaci\u00f3n<\/a><\/p>\n

    Y ahora conectamos la placa del rel\u00e9 con el arduino para ponerle la masa, los 5v y el cable de control, en mi programa he usado el pin 2 para realizar esta tarea.<\/p>\n

    \"Reles<\/a><\/p>\n

    Ahora ya tenemos todo el montaje realizado, ahora vamos a ver el programa fuente para realizar la gesti\u00f3n de todo. Yo he usado la librer\u00eda de Webduino para que fuera m\u00e1s f\u00e1cil la gesti\u00f3n web.<\/p>\n

    \r\n\/*--------------------------------------------------------------\r\n  Program:      IguaHouse\r\n\r\n  Description:  Servidor Web protegido mediante contrase\u00f1a\r\n                para controlar una salida de Luz\r\n\r\n  Hardware:     - Arduino Uno y una shield de Ethernet.\r\n                - Una placa de reles conectada al arduino en\r\n                 el pin 2 y GND\r\n\r\n  Software:     Desarrollado usando el IDE 1.0.5 y la\r\n                libreria de Webduino\r\n\r\n  References:   - Foro de Arduino\r\n                - Documentacion de Webduino\r\n\r\n  Date:         26 Diciembre del 2013\r\n\r\n  Author:       Arturo Igualada http:\/\/wordpress.igua.es\r\n--------------------------------------------------------------*\/\r\n\r\n\/* you can change the authentication realm by defining\r\n * WEBDUINO_AUTH_REALM before including WebServer.h *\/\r\n#define WEBDUINO_AUTH_REALM "Igua Private Site"\r\n\r\n#define Host_name "Igua"\r\n\r\n#include "SPI.h"\r\n#include "Ethernet.h"\r\n#include "WebServer.h"\r\n\r\n\/* CHANGE THIS TO YOUR OWN UNIQUE VALUE.  The MAC number should be\r\n * different from any other devices on your network or you'll have\r\n * problems receiving packets. *\/\r\nbyte mac[] = { 0x16, 0x16, 0x16, 0x16, 0x16, 0x01 };\r\n\r\n\/* CHANGE THIS TO MATCH YOUR HOST NETWORK.  Most home networks are in\r\n * the 192.168.0.XXX or 192.168.1.XXX subrange.  Pick an address\r\n * that's not in use and isn't going to be automatically allocated by\r\n * DHCP from your router. *\/\r\nIPAddress ip(172,27,0,15);\r\nIPAddress gateway(172,27,0,1);\r\nIPAddress subnet(255, 255, 255, 0);\r\n\r\n\/* This creates an instance of the webserver.  By specifying a prefix\r\n * of "", all pages will be at the root of the server. *\/\r\n#define PREFIX ""\r\nWebServer webserver(PREFIX, 80);\r\n\r\nboolean LED_status = 0;   \/\/ state of LED, off by default\r\n\r\n\/\/ ROM-based messages used by the application\r\n\/\/ These are needed to avoid having the strings use up our limited\r\n\/\/ amount of RAM.\r\n\r\nP(Page_start) = "<html><head><title>ManchiHouse<\/title><\/head><body>\\n";\r\nP(Page_end) = "<\/body><\/html>";\r\nP(Get_head) = "<h1>GET from ";\r\nP(Post_head) = "<h1>POST to ";\r\nP(Unknown_head) = "<h1>UNKNOWN request for ";\r\nP(Default_head) = "unidentified URL requested.<\/h1><br>\\n";\r\nP(Line_break) = "<br>\\n";\r\nP(Form_Inicio) = "<form method=\\"get\\">";\r\nP(Form_Final) = "<\/form>";\r\n\r\n#define NAMELEN 32\r\n#define VALUELEN 32\r\n\r\nString GetParam(String ParamName, WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)\r\n{\r\n  URLPARAM_RESULT rc;\r\n  char name[NAMELEN];\r\n  char value[VALUELEN];\r\n  String ReturnParam = "";\r\n  if (strlen(url_tail))\r\n    {\r\n    while (strlen(url_tail))\r\n      {\r\n      rc = server.nextURLparam(&url_tail, name, NAMELEN, value, VALUELEN);\r\n      if (rc != URLPARAM_EOS && String(name) == ParamName)\r\n        {\r\n        ReturnParam = value;\r\n        }\r\n      }\r\n    }\r\n  if (type == WebServer::POST)\r\n  {\r\n    while (server.readPOSTparam(name, NAMELEN, value, VALUELEN))\r\n    {\r\n      if (String(name) == ParamName)\r\n      {\r\n        ReturnParam = value;\r\n      }\r\n    }\r\n  }\r\n\r\n  return ReturnParam;\r\n}\r\n\r\n\/\/Se mira la query para ver si se ha de activar o desactivar la linea\r\nString ProcesarCheckbox(String Estado)\r\n{\r\n  LED_status = 0;\r\n  if (Estado == "1")\r\n  {\r\n    LED_status = true;\r\n  }\r\n\r\n    if (LED_status) {    \/\/ switch LED on\r\n        digitalWrite(2, HIGH);\r\n        \/\/ checkbox is checked\r\n        return "<input type=\\"checkbox\\" name=\\"Luz\\" value=\\"1\\" onclick=\\"submit();\\" checked>Apagar Luz";\r\n    }\r\n    else {              \/\/ switch LED off\r\n        digitalWrite(2, LOW);\r\n        \/\/ checkbox is unchecked\r\n        return "<input type=\\"checkbox\\" name=\\"Luz\\" value=\\"1\\" onclick=\\"submit();\\">Encender Luz";\r\n    }\r\n}\r\n\r\nvoid indexCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)\r\n{\r\n  server.httpSuccess();\r\n  if (type != WebServer::HEAD)\r\n  {\r\n    P(Saludo) = "<h1>Bienvenido a IGUA!<\/h1><a href=\\"control.html\\">Acceder<\/a>";\r\n    server.printP(Saludo);\r\n  }\r\n}\r\n\r\nvoid controlCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)\r\n{\r\n  \/* if the user has requested this page using the following credentials\r\n   * username = user\r\n   * password = user\r\n   * display a page saying "Hello User"\r\n   *\r\n   * the credentials have to be concatenated with a colon like\r\n   * username:password\r\n   * and encoded using Base64 - this should be done outside of your Arduino\r\n   * to be easy on your resources\r\n   *\r\n   * in other words: "YWRtaW46YWRtaW4=" is the Base64 representation of "admin:admin"\r\n   *\r\n   * if you need to change the username\/password dynamically please search\r\n   * the web for a Base64 library *\/\r\n  if (server.checkCredentials("YWRtaW46YWRtaW4="))\r\n  {\r\n    server.httpSuccess();\r\n    String Estado = GetParam("Luz", server, type, url_tail, tail_complete);\r\n\r\n    if (type != WebServer::HEAD)\r\n    {\r\n      P(Control_Head) = "<h1>Bienvenido al control de IGUA<\/h1><p>Indica si deseas encender o apagar la luz<\/p>";\r\n\r\n      server.printP(Control_Head);\r\n      server.printP(Form_Inicio);\r\n      server.println(ProcesarCheckbox(Estado));\r\n      server.printP(Form_Final);\r\n    }\r\n  }\r\n  else\r\n  {\r\n    Serial.println("No valido");\r\n    \/* send a 401 error back causing the web browser to prompt the user for credentials *\/\r\n    server.httpUnauthorized();\r\n  }\r\n}\r\n\r\nvoid failCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)\r\n{\r\n  \/\/this line sends the "HTTP 400 - Bad Request" headers back to the browser\r\n  server.httpFail();\r\n\r\n   \/* if we're handling a GET or POST, we can output our data here.\r\n    For a HEAD request, we just stop after outputting headers. *\/\r\n    if (type== WebServer::HEAD)\r\n    {\r\n      return;\r\n    }\r\n\r\n    server.printP(Page_start);\r\n\r\n    switch(type)\r\n    {\r\n      case WebServer::GET:\r\n      {\r\n        server.printP(Get_head);\r\n        break;\r\n      }\r\n      case WebServer::POST:\r\n      {\r\n        server.printP(Post_head);\r\n        break;\r\n      }\r\n      default:\r\n      {\r\n        server.printP(Unknown_head);\r\n      }\r\n    }\r\n    server.printP(Default_head);\r\n    server.print(url_tail);\r\n    server.printP(Page_end);\r\n\r\n}\r\n\r\nvoid setup()\r\n{\r\n  Serial.begin(9600);\r\n  Serial.println("Iniciado");\r\n\r\n  \/* initialize the Ethernet adapter *\/\r\n  \/\/Ethernet.begin(mac, ip, gateway, subnet);\r\n\r\n  Serial.println("Trying to get an IP address using DHCP");\r\n  if (Ethernet.begin(mac) == 0) {\r\n    Serial.println("Failed to configure Ethernet using DHCP");\r\n    \/\/ initialize the ethernet device not using DHCP:\r\n    Ethernet.begin(mac, ip, gateway, subnet);\r\n  }\r\n  \/\/ print your local IP address:\r\n  Serial.print("My IP address: ");\r\n  ip = Ethernet.localIP();\r\n  for (byte thisByte = 0; thisByte < 4; thisByte++) {\r\n    \/\/ print the value of each byte of the IP address:\r\n    Serial.print(ip[thisByte], DEC);\r\n    Serial.print(".");\r\n  }\r\n  Serial.println();\r\n\r\n  \/* setup our default command that will be run when the user accesses\r\n  * the root page on the server *\/\r\n  webserver.setDefaultCommand(&indexCmd);\r\n\r\n  \/* setup our default command that will be run when the user accesses\r\n  * a page NOT on the server *\/\r\n  \/\/webserver.setFailureCommand(&failCmd);\r\n\r\n  \/* run the same command if you try to load \/index.html, a common\r\n  * default page name *\/\r\n  webserver.addCommand("index.html", &indexCmd);\r\n\r\n  webserver.addCommand("control.html", &controlCmd);\r\n\r\n  \/* start the webserver *\/\r\n  webserver.begin();\r\n\r\n  \/*Indicamos que el PIN 2 ser\u00e1 de salida\r\n  * para nosotros es donde estar\u00e1 el cable de Luz *\/\r\n  pinMode(2, OUTPUT);\r\n}\r\n\r\nvoid loop()\r\n{\r\n  char buff[64];\r\n  int len = 64;\r\n\r\n  \/* process incoming connections one at a time forever *\/\r\n  webserver.processConnection(buff, &len);\r\n}\r\n<\/pre>\n
    Una vez realizado todo ya podemos ponerle algo al enchufe y controlarlo mediante nuestro sencillo servidor web. Para que quedara todo m\u00e1s recogido, personalmente lo he metido en una caja cerrada donde solo saco los cables necesarios.<\/p>\n
    \"Circuito<\/a>
    \nVideo en funcionamiento:     Video<\/a>.<\/p>\n
    Espero que les haya gustado.<\/p>\n\n\t\t