{"id":9097,"date":"2019-12-19T19:02:57","date_gmt":"2019-12-19T17:02:57","guid":{"rendered":"https:\/\/www.espai.es\/blog\/?p=9097"},"modified":"2020-01-02T22:52:45","modified_gmt":"2020-01-02T20:52:45","slug":"nodemcu-la-solucion-wifi-para-arduino","status":"publish","type":"post","link":"https:\/\/www.espai.es\/blog\/2019\/12\/nodemcu-la-solucion-wifi-para-arduino\/","title":{"rendered":"NodeMCU: La soluci\u00f3n WIFI para Arduino"},"content":{"rendered":"<p style=\"text-align: justify\"><strong>NodeMCU<\/strong>\u00a0es una iniciativa open Source para el desarrollo de un modelo sencillo de integrar la\u00a0<strong>IOT<\/strong>\u00a0(la Internet de las cosas). Para ello desarrollan modelos de hardware y software que facilite el desarrollo de programas y aplicaciones basados en\u00a0<strong>WIFI<\/strong>.<\/p>\n<p style=\"text-align: justify\">Est\u00e1 basado en el Chip ESP8266.\u00a0Se trata de un chip integrado con conexi\u00f3n WiFi y compatible con el protocolo TCP\/IP. El objetivo principal es dar acceso a cualquier microcontrolador a una red.<\/p>\n<p style=\"text-align: justify\">Los anteriores modelos que incorporaban el procesador ESP8266 (ESP-01, ESP-02, ESP-03, ESP-05, ESP-12) son complicados de programar, pero no por la cantidad de manuales existentes en Internet, sino por numerosos errores de compilaci\u00f3n de estos c\u00f3digos y por el hecho de que muchos no llevan a resultados concluyentes.<\/p>\n<p class=\"normal\" style=\"text-align: justify\">B\u00e1sicamente,\u00a0<strong>la placa de desarrollo NodeMCU est\u00e1 basada en el ESP12E<\/strong>\u00a0y expone las funcionalidades y capacidad del mismo. Pero, adem\u00e1s, a\u00f1ade las siguientes ventajas propias de placas de desarrollo:<\/p>\n<div class=\"lll-list\" style=\"text-align: justify\">\n<ul class=\"fa-ul\">\n<li><i class=\"fa fa-li fa-arrow-right blue\"><\/i>Programaci\u00f3n sencilla a trav\u00e9s del Micro-USB<\/li>\n<li><i class=\"fa fa-li fa-arrow-right blue\"><\/i>Bot\u00f3n de LED y Reset integrados<\/li>\n<li>Presenta todos los pines disponibles del\u00a0<strong>ESP8266<\/strong>\u00a0en el exterior del modulO<\/li>\n<li>Se puede colocar en una protoboard<\/li>\n<li>Incluye un conector\u00a0<strong>micro USB<\/strong>\u00a0para programar el chip interno y comunicarse con el PC si es necesario (se evita el adaptador\u00a0<strong>USB<\/strong>).<\/li>\n<li>Soporta, tanto el modo Arduino o un modo propio de desarrollo con un lenguaje reminiscente de Basic que pueden ser cargados mediante actualizaciones firmware.<\/li>\n<\/ul>\n<\/div>\n<p style=\"text-align: justify\">Existen 3 generaciones de NodeMCU. La 1\u00ba generaci\u00f3n es obsoleta y estaba montada sobre un m\u00f3dulo ESP12. La 2\u00ba generaci\u00f3n recibe el nombre de Amica y est\u00e1 declarada la versi\u00f3n oficial de NodeMCU. Monta un ESP12E en lugar de un ESP12. La 3\u00ba Generaci\u00f3n pertenece al fabricante Lolin, donde se monta un conversor serial CH340G.<\/p>\n<p style=\"text-align: justify\">Para empezar a programar una placa NodeMCU s\u00f3lo es necesario un cable microUSB, con el cual vamos a alimentar dicho chip, conect\u00e1ndolo al ordenador.<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45.png\" rel=\"attachment wp-att-9123\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9123 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45.png\" alt=\"\" width=\"814\" height=\"387\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45.png 814w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45-300x143.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45-768x365.png 768w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/45-700x333.png 700w\" sizes=\"auto, (max-width: 814px) 100vw, 814px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">El siguiente c\u00f3digo permite que una placa NodeMCU se conecte a una determinada red WIFI, obtenga una direcci\u00f3n IP por DHCP y por lo tanto pueda ser accedida desde un m\u00f3vil conectado a la misma WIFI.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/40.png\" rel=\"attachment wp-att-9110\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9110 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/40.png\" alt=\"\" width=\"739\" height=\"654\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/40.png 739w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/40-300x265.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/40-700x619.png 700w\" sizes=\"auto, (max-width: 739px) 100vw, 739px\" \/><\/a><\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41.png\" rel=\"attachment wp-att-9111\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9111 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41.png\" alt=\"\" width=\"1130\" height=\"674\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41.png 1130w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41-300x179.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41-768x458.png 768w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41-1024x611.png 1024w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/41-700x418.png 700w\" sizes=\"auto, (max-width: 1130px) 100vw, 1130px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">El problema en si es como conseguimos compilar y subir\/cargar dicho c\u00f3digo en una placa NodeMCU.<\/p>\n<p style=\"text-align: justify\">Primero debemos instalar la plataforma ESP8266 y seleccionar un modelo de placa que nos permita comunicarnos con la placa NodeMCU. Esto lo encontramos en la siguiente p\u00e1gina de github:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42.png\" rel=\"attachment wp-att-9112\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9112 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42.png\" alt=\"\" width=\"916\" height=\"325\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42.png 916w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42-300x106.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42-768x272.png 768w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/42-700x248.png 700w\" sizes=\"auto, (max-width: 916px) 100vw, 916px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">En nuestro IDE Arduino, cuya versi\u00f3n tiene que ser igual o superior a la 1.8.7, debemos ir la ventana Archivo\/Preferencias, y en Gestor de URLs Adicionales de Targetas debemos indicar la URL:<\/p>\n<p style=\"text-align: justify\">https:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31.png\" rel=\"attachment wp-att-9098\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9098 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31.png\" alt=\"\" width=\"804\" height=\"477\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31.png 804w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31-300x178.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31-768x456.png 768w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/31-700x415.png 700w\" sizes=\"auto, (max-width: 804px) 100vw, 804px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">De esta forma incluimos los drivers de nuestra placa NodeMCU. Pero esto no es suficiente. Adem\u00e1s debemos insertar la librer\u00eda ESP8266 Community yendo a la opci\u00f3n de men\u00fa Programa\/Incluir Librer\u00eda\/Administrar Bibliotecas. Esta librer\u00eda nos permitir\u00e1 compilar el c\u00f3digo Arduino e incluir la librer\u00eda ESP8266Wifi.h. Hemos de buscar esta librer\u00eda e instalarla:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34.png\" rel=\"attachment wp-att-9101\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9101 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34.png\" alt=\"\" width=\"796\" height=\"445\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34.png 796w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34-300x168.png 300w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34-768x429.png 768w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/34-700x391.png 700w\" sizes=\"auto, (max-width: 796px) 100vw, 796px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">Una vez hemos instalado la parte &#8216;hardware&#8217; (para seleccionar nuestra placa) y la parte software&#8217; (para poder compilar el c\u00f3digo) debemos indicar el puerto donde est\u00e1 conectada nuestra unidad NodeMCU. Vamos a Herramientas\/Puerto y seleccionamos el puerto que nos indique el IDE:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/32.png\" rel=\"attachment wp-att-9099\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9099 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/32.png\" alt=\"\" width=\"658\" height=\"385\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/32.png 658w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/32-300x176.png 300w\" sizes=\"auto, (max-width: 658px) 100vw, 658px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">A continuaci\u00f3n debemos cambiar el tipo de Placa a programar por la \u00abGeneric ESP8285 Module\u00bb en la opci\u00f3n de men\u00fa Herramientas. Al instante se cambian muchas de las opciones existentes tal y como se puede observar en la siguiente imagen:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/36.png\" rel=\"attachment wp-att-9103\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9103 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/36.png\" alt=\"\" width=\"560\" height=\"641\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/36.png 560w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/36-262x300.png 262w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">Se deben de cambiar algunos valores de par\u00e1metros que aparecen por defecto, como la velocidad de subida o el tama\u00f1o de la memoria flash:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/37.png\" rel=\"attachment wp-att-9104\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9104 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/37.png\" alt=\"\" width=\"556\" height=\"639\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/37.png 556w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/37-261x300.png 261w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">Una vez llegados a este punto, el programa de Arduino ya se puede compilar y descargar en la placa NodeMCU. Si abrimos el Monitor Serial podemos observar los mensajes de que el servidor se ha inicializado y que nos podemos conectar a \u00e9l a trav\u00e9s de una determinada direcci\u00f3n IP:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/38.png\" rel=\"attachment wp-att-9105\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9105 size-full\" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/38.png\" alt=\"\" width=\"689\" height=\"376\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/38.png 689w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/38-300x164.png 300w\" sizes=\"auto, (max-width: 689px) 100vw, 689px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">Para testear el funcionamiento del dispositivo, lo m\u00e1s f\u00e1cil es conectarse a trav\u00e9s de un m\u00f3vil conectado previamente a la misma wifi que el dispositivo NodeMCU. As\u00ed de esta forma comparten la misma red y hay visibilidad entre ellos. Abriendo un navegador y poniendo la direcci\u00f3n IP que nos ha indicado anteriormente el dispositivo, obtenemos la p\u00e1gina web que nos est\u00e1 sirviendo nuestra placa NodeMCU.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39.png\" rel=\"attachment wp-att-9106\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-9106 \" src=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39.png\" alt=\"\" width=\"290\" height=\"628\" srcset=\"https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39.png 720w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39-138x300.png 138w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39-473x1024.png 473w, https:\/\/www.espai.es\/blog\/wp-content\/uploads\/2019\/12\/39-700x1517.png 700w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/a><\/p>\n<p>Espero que este articulo os haya resultado \u00fatil.<\/p>\n<p>Saludos y hasta el pr\u00f3ximo<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NodeMCU\u00a0es una iniciativa open Source para el desarrollo de un modelo sencillo de integrar la\u00a0IOT\u00a0(la Internet de las cosas). Para ello desarrollan modelos de hardware y software que facilite el desarrollo de programas y aplicaciones basados en\u00a0WIFI. Est\u00e1 basado en el Chip ESP8266.\u00a0Se trata de&#8230;<\/p>\n","protected":false},"author":18,"featured_media":9115,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[218,5],"tags":[166,713,112],"class_list":["post-9097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-escola-espai","category-programacion","tag-arduino","tag-nodemcu","tag-wifi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NodeMCU: La soluci\u00f3n WIFI para Arduino - Blog Escola Espai<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.espai.es\/blog\/2019\/12\/nodemcu-la-solucion-wifi-para-arduino\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NodeMCU: La soluci\u00f3n WIFI para Arduino - Blog Escola Espai\" \/>\n<meta property=\"og:description\" content=\"NodeMCU\u00a0es una iniciativa open Source para el desarrollo de un modelo sencillo de integrar la\u00a0IOT\u00a0(la Internet de las cosas). Para ello desarrollan modelos de hardware y software que facilite el desarrollo de programas y aplicaciones basados en\u00a0WIFI. 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