Esp8266 Https Post Json

Attempting to receive pages larger than this will fail. ESP8266: Parsing JSON: As promised in my previous instructable, I will be covering more about the ArduinoJson library in detail, in this instructable. You can send the output from http. It’s a language that’s similar to XML, syntactically identical to JavaScript code, and the fastest data-interchange format to be used with AJAX (Asynchronous JavaScript. Project tutorial by we will connect to light. Read about 'ESP8266 Wi-Fi + Arduino upload to Xively and ThingsSpeak' on element14. Follow these next 6 steps to create your flow: 1) Open the Node-RED software in your browser. 以POST方法傳送JSON數據的NodeMCU程式. We are going to send the HTTP POST request to a fake online testing REST API. In order to get our ESP8266 to work properly with our Arduino, we need to do some initial programming. How to create a restful api in Intersystems cache with JSON response. The header authorizes your domain, allowing the Javascript AJAX to retrieve the ESP8266 http response. https://thingspeak. That's how we will get Arduino simplicity and power of ESP8266. UTFT-ESP8266 - UTFT display library with support for ESP8266. Make sure the same version is installed on your computer. JSON Http Request Previous Next A common use of JSON is to read data from a web server, and display the data in a web page. Starting Arduino and open Preferences window and entering the following link into Additional Board Manager URLs field. One of my favorite is the $4. Name Description (Required) Format for the HTTP response, specified as blank, json, or xml. Use the HTTP In node to listen for POST requests that have their Content-Type set to application/json and access the parsed JSON as properties of msg. Price is only starting from $2. ArduinoJson is a JSON library for Arduino, IoT, and any embedded C++ project. If you are not friendly with NodeMCU using Arduino IDE, Visit this: Arduino Support for ESP8266 with simple test code Recommended: GPIO pins of ESP8266 and How to use efficiently Recommended: NodeMCU…. In this post, I will tell how to configure & upload code in ESP8266 from Arduino IDE in Raspbian OS of Raspberry Pi 3B+. There are some great examples on how to post data to data. Program and detailed working explanation. It has GPIO, SPI, I2C, ADC, PWM AND UART pins for communication and controlling other peripherals attached to it. In this tutorial i am telling to you ” How To use ESP8266 as a MQTT Broker”. The prints shown here are from the tests performed on the ESP8266. The Adafruit IO HTTP API provides access to your Adafruit IO data from any programming language or hardware environment that can speak HTTP. LED Blinking hello world programming for ESP WiFi Module. The software on the server decides what to do with it, and how (or if) to display it. In this tutorial, we illustrated the most common ways to send POST HTTP Requests with the Apache HttpClient 4. I had an extra ESP8266 laying around (as we all should) and decided to create a Temperature & Humidity Sensor for my office. Temperature upload over MQTT using Arduino UNO, ESP8266 and DHT22 sensor Thingsboard is an open-source server-side platform that allows you to monitor and control IoT devices. arduinoclass. NET Framework 4. Detailed Tutorial 1. post: https://blog. You can download. The "this is an example message" bit should be sent after the headers separated by CR LF and doesn't need the "Body: " prefix, also there should be a Content-Length header. POST /v1/push-sensor-data/ HTTP/1. Otherwise the sections are mostly self contained, so feel free to skip to those that interest you. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. I wondered, however, if there isn't an easier way for this. The station itself, the Time Client, acts only as such - as a client. Here we use JSON. This Android HTTP library supports HTTP and HTTPS protocol and it is the basic class to use when handling HTTP connection. ⏩ Post By Arun Kumar Intersystems Developer Community API ️ Tutorial ️ Caché. I'm working on a project aimed on sending alerts via SMS. In this blog post you're going to learn how to decode (parse a JSON string) and encode (generate a JSON string) with the ArduinoJson library using the Arduino with the Ethernet shield. println( http. I imagine the majority of developers will hack up their own JSON parser, using. In this flow, you’re going to receive an HTTP POST request and print the receive data in the Debug window. The objective of this post "ESP8266 Parsing JSON" is to explain how to parse simple JSON on the ESP8266, using the ArduinoJson library. 2 support, we're excited to share an example of sending messages using the ESP8266 and the Twilio API. @pushyamig You can wrap all of your json objects in a single JSON array like so: [ {event1}, {event2}. Now we Arduino IDE, If you don't familier with ESP8266 using Arduino IDE. ESP8266 / NodeMCU / Arduino based TV Remote. Javascript Object Notation (JSON) is a fancy name for a simple idea: A web page can download data stored as javascript variables. The ESP8266 is a $4 (up to $10) WiFi module with an ARM processor that is great for home automation/internet of things applications. (red or green) Changes the buttons color. ESP8266 specifications. The Alexa Skills Kit enables you to give Alexa new abilities by building a cloud-based service. Find out how Xively lets you build a connected product faster than any other method (including building it from scratch). If youre interested, the simple example over at Please login or register to see this link. * Using XMLHttpRequest() in plain JavaScript XMLHttpRequest is an API that provides client functionality for transferring data between a client and a server. Now, recycling all the things and changing only the post data, it works. You can buy it from the following links. LoRa gateway for DeviceHive. ESP8266 NodeMCU. Written post with code and library installation instructions: https://t. What I have working: I have everything working with a POST request to the API from the server using Base64 string images manually converted, the JSON body is getting nicely parsed and I get all the data I need using the following code. Paste your JSON in the box and you'll know This is the Assistant for ArduinoJson 5. We will use HttpURLConnection to make an HTTP POST request to the server. The data must be sent to my server with HTTP post request with data as JSON format (Content-Type: application/json for request header). You can also see the tutorial video in Hindi. Beginners tutorial to get started with ESP8266 programming with Arduino IDE. The second part involves creating a Google sheet and configuring it to accept the sensor data sent by the ESP8266 module over the internet using a Google App Script that is provided with this tutorial. You read a soil moisture sensor and post the value to a ThingSpeak channel. Otherwise the sections are mostly self contained, so feel free to skip to those that interest you. Starting Arduino and open Preferences window and entering the following link into Additional Board Manager URLs field. Since Twilio does not allow access to their APIs via HTTP, and since the ESP module does not support HTTPS, IoT HTTPS Relay receives the HTTP request from the ESP8266 and changes it to an HTTPS. Patriotic Quilt Along. Sending HTTPS requests with ESP8266; For my example I wanted to read the contents of surf-forecast. Geolocating with ESP8266 3. Plug in dev board via USB to your computer. This is just a quick and dirty way of flashing your ESP8266 with a sketch to call a Webhook. Arduino Support for ESP8266 with simple test code. ESP8266 Web Server Tutorial (Part 2): Added HTML / Arduino interface interactions. With this simple example we have demonstrated how to set up a client program, connect it to a server, request a web page and retrieve it. Connecting an ESP8266-12 to a DS1820 thermometer and do a http post data to the internet. - Wed Mar 09, 2016 7:27 am #42728 I don't think your HTTP message has the correct format. js and Arduino Decoding and Encoding JSON with Arduino or ESP8266. Same Web Server can be extended to listen to POST requests from HTTP clients (Web Browsers). This is how you do a GET. But same logic could be done for anything where you can use GET requests. J'ai essayé de le mettre dans une boucle et chaque fois j'ai "Client not connected!" , donc il ne se connecte même pas. The Android HTTP library is based on HttpUrlConnection. The objective of this post "ESP8266 Parsing JSON" is to explain how to parse simple JSON on the ESP8266, using the ArduinoJson library. I am passing post param as Json serialized object. The objective of this post is to explain how to perform HTTP POST requests using MicroPython and the urequests library. You can use the Bulk-Write JSON Data API to collect data as batch and send it to ThingSpeak channels. This video explains how to perform HTTP POST Requests using the ESP32 and the Arduino core. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created function(1. Meet the Arduino Killer: ESP8266. The concept is to have the ESP8266 driving the P10 display by reading the data from the webserver, this will ensure that the data can be updated automatically in the webserver via some automation and the P10 is being set to poll the data periodically and displaying it on the P10 display. I need to read JSON data from here and then I have to parse it. println( http. This project can be accomplished without any credit card sign-ups or use of proprietary, black box API's. I added debug defines to the ESP8266 wifi and HTTP libraries without success. Text received over a WebSocket connection is in UTF-8 format. if you do a search Topic about Google Home you will find your answer. This is a short article to introduce the ESP8266_http_io library. I have created a Wifi temperature sensor using a Nodemcu ESP8266 board and DS1820. NodeMCU is an open source IoT platform. The "this is an example message" bit should be sent after the headers separated by CR LF and doesn't need the "Body: " prefix, also there should be a Content-Length header. In this flow, you’re going to receive an HTTP POST request and print the receive data in the Debug window. Thanks James. I tried the same cable with a Teensy 3. 2) Drag an HTTP input node and a debug node. I travel telling the story of Azure IoT. In the past few days I have received some requests on how to create a Web Server on ESP8266. - Wed Mar 09, 2016 7:27 am #42728 I don't think your HTTP message has the correct format. In this tutorial i am telling to you " How To use ESP8266 as a MQTT Broker". Now, recycling all the things and changing only the post data, it works. So, I've given my code below. It is simple bit banging of SPI, which gets around some of the. HTTPS packet payload contains JSON data. Then we will phrase this JSON file to extract only the required information from the complete JSON file. This was tested on both the ESP32 and the ESP8266. Recommended: GPIO pins of ESP8266 and How to use efficiently. @pushyamig You can wrap all of your json objects in a single JSON array like so: [ {event1}, {event2}. Here we will consume an open REST service to practice sending data in JSON format to a cloud server. You can post data in Json or XML format and based on that make changes on ESP8266. This instructable relies on Arduino core for ESP8266 WiFi chip, which makes a self-contained microcontroller from it (n. The prints shown here are from the tests performed on the ESP8266. If your API endpoint can only accept one at a single time, then you can write a bash script that traverses your json array and throws a curl command for each one of them. We will see how to send an HTTP GET and a POST request. The goal of this project is to show the endless possibilities that this $4 WiFi module offers when integrates with a free platform that I'm about to show you. Easier way to make HTTP(S) requests with the ESP8266? Paul, thanks a lot for this example code on how to make use of the ESP8266 and how to send HTTP requests. It has a simple API, it’s easy to use, and it’s trusted by thousands of developpers all over the world. Adafruit IO HTTP API. What is a parser anyway? You are most certainly using. 1 Host: ESP8266_IP_ADDRESS. For implementing a real scenario use case, you can check this previous post on how to encode JSON messages with the ESP8266. We can use the web server to serve interactive pages, and to react to certain POST request. The ESP8266 boards are generally easy to use and understand but some precautions need to be taken when it comes to the different GPIOs available. It is not meant as a standalone post, rather as a follow up to the great blogs by Prashantha H J, Jan Penninkhof, Rui Nogueira. https://thingspeak. Basically, we have to start with the ESP8266-01 module. Only serial interface (SPI) displays are supported for now (no 8-bit parallel mode, etc). This demo needs: ArduCAM ESP8266 UNO Board(x1), ArduCAM Mini 2MP camera module(x1). On the other hand, POST is the HTTP method we are going to use. connect (host, port)) “. Hi Guys, I am trying to call a web Api using HttpWebRequest and finding its Response using HttpWebResponse. I can now reliably establish a TCP connection and send data back and forth. You can buy it from the following links. NodeMCU Configuration in Arduino is explained in this post. 2) But it does not work when i use the root variable. At first we need to create package. The main differences are: 1. LoRa gateway for DeviceHive. The ESP8266 Wi-Fi module is a programmable Wi-Fi circuit which can be programmed and loaded with an Arduino Sketch. This is a short article to introduce the ESP8266_http_io library. The general principle I am hoping to use on my home network is to expose sensor data from an ESP8266 as json or a simple web page. I wondered, however, if there isn't an easier way for this. Text data format. npm init -y. make sure you are using at least 1. My JSON Server beta. So let's explore our options here. There is two chipset model available, one is CH340 and another one is CP2102. 2 version AT firmware (run cloud update first) Turn on the APP "AI-link" in your android cell phone; enter the wifi SSID and password and click "start". JSON, Bootstrap-table, GPIO. When ı'm trying to this code. Have you manually tested the post command before trying it on the Arduino?. I tried the same cable with a Teensy 3. Beginners tutorial to get started with ESP8266 programming with Arduino IDE. You read a soil moisture sensor and post the value to a ThingSpeak channel. 6/devices/esp8266/?token=A1E. ESP8266 + WiFiManager + Arduino_JSON = Multi WiFi! pocket; This is the first post on this blog, so I wanted to share something I couldn't find and had to figure. 6) Để lưu ứng dụng của bạn, bạn cần phải bấm vào nút deploy (triển khai) ở góc trên bên phải. In case you are looking for a reference to enable ESP8266 development on Arduino IDE, this post shows how you can do so. I'm working on a project aimed on sending alerts via SMS. Note that this tutorial was tested with the "esp8266 by ESP8266 Community" version 2. ) built-in. Using Geolocation API to Obtain a Location Google's Geolocation API requires a number of parameters, which must be sent via a POST request formatted as JSON to the following URL:. This will create a blank package. com, but we need to modify that code in order to pull data from a website. HTTPS packet payload contains JSON data. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. It helps that I came across some slightly better documentation, sourced from this esp8266. The first part is setting up the ESP8266 hardware to read the soil moisture sensor output. What I'm trying: trying to send images (using POST requests) to a server that will look for certain items in the image and returns a JSON object with info I need. So let's explore our options here. Domoticz allows you to interact with all your switches and sensors using JSON, either interactively through a browser or programmatically from a scripting language. If you need help setting MicroPython on the ESP32, please check this previous post for a detailed guide. When ı'm trying to this code. Code: Select all HTTP/1. js and Arduino Decoding and Encoding JSON with Arduino or ESP8266. Post by paritosharya007 » Sat Jul 11, please have a look at the source code on https: Are you new to ESP8266?. The second part involves creating a Google sheet and configuring it to accept the sensor data sent by the ESP8266 module over the internet using a Google App Script that is provided with this tutorial. This is just a quick and dirty way of flashing your ESP8266 with a sketch to call a Webhook. JSON (JavaScript Object Notation) is a lightweight data-interchange format. DeviceHive contains a set of services and components connecting smart devices to public and private clouds, turning your device data into a valuable asset. getString() to the Arduino IDE's Serial Monitor like this: Code: Select all | TOGGLE FULL SIZE Serial. Compile and upload this sketch to the ESP8266. At first we need to create package. ⏩ Post By Arun Kumar Intersystems Developer Community API ️ Tutorial ️ Caché. We are going to send the HTTP POST request to a fake online testing REST API. Beginners tutorial to get started with ESP8266 programming with Arduino IDE. How to: Choose between HTTP POST and HTTP GET requests for ASP. We assume that the ESP8266 libraries for the Arduino IDE were previously installed. We can program ESP8266 native code or use ESP8266 NodeMCU. When we "flash" code to an embedded device, it will be written so that the device will retain that code and run it on reset or next power-up. The JSON message that will be returned is shown bellow and is composed by two temperature measurements. 2 or higher from Arduino's library manager). NeoPixelBus - Arduino NeoPixel library compatible with ESP8266. POST /v1/push-sensor-data/ HTTP/1. com API What is the best way to plot these data to the Dashboard …. An efficient and elegant JSON library for Arduino. DS18B20 and ESP8266. @pushyamig You can wrap all of your json objects in a single JSON array like so: [ {event1}, {event2}. Now you can use Flow to create powerful custom HTTP triggers that your application can invoke at any time. prettyPrintTo(client); client. I've coded up some simple JSON encode/decode routines in pure Lua and thought I'd share them in case anyone else would find them useful. If it sees an "On" value, it lights up. This example for a Yún device shows how create a basic HTTP client that connects to the internet and downloads content. The user should just hold his RFID chip to the case and then press a button, depending on whether he likes to log in or out. 1) The code works fine if i send the json object store in data. ESP8266 Send DHT Temperature & Humidity Readings to MQTT & OLED Display. This site uses cookies to store information on your computer. println(); 3) how can i extract only the data part from the response and discard other headers section. Thanks James. When the button is pressed, the browser sends a POST request to /LED. With Arduino ESP8266 IDE you can load program ESP8266 directly, no need for additional Arduino board. Its easy to use, powerful, and very very cheap. 8 from the Arduino website. Please Visit given below post. In this example we learn how to send get request to a web page using NodeMCU or ESP8266? As we know all webpages are HTTP protocols, GET and POST are methods of communicating between web browser and the server. Esp32 Json Read more. In this blog i will explain how to connect the ESP8266 with HCP IOT, by developing a simple sketch in the Arduino IDE. HTTP requests (GET, POST etc. Arduino Esp8266 Post Data to Website: The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. PubSubClient MQTT library by @Imroy. Instead of XML you may provide and accept entities as JSON, a simpler and more concise format. POST data to HTTP server Hello everyone, I'm using pic18f4520 and esp8266 for send my data to the HTTP server. Use the "NeoPixelAnimator" branch for ESP8266 to get HSL color support and more. This example sends the current buttons color to the ESPRUINO PICO and then the pico sends back the other color. Text data format. How do you post json data to HTTPS endpoint from ESP8266MOD? AFAIK there is no direct support for HTTPS in the ESP8266 ESP8266 HTTPS post body request with. ı will send a json data with QueryString. In the standard syntax no fields are required - pass only what you need. Read about 'Nokia 5110 LCD and Json Parser on ESP8266' on element14. Local temperature is taken from a server which gets the data from openweathermap. One of my favorite is the $4. Connecting an ESP8266-12 to a DS1820 thermometer and do a http post data to the internet. Ensure 'HTTP POST' is selected. 50 Comments. The objective of this post "ESP8266 Parsing JSON" is to explain how to parse simple JSON on the ESP8266, using the ArduinoJson library. Hi Guys, I am trying to call a web Api using HttpWebRequest and finding its Response using HttpWebResponse. "application/json"); my ESP8266-12 happily does a http post to my. Since it is easy to write code and flash programs with Arduino IDE, it is a good tool to use with the ESP8266 NodeMCU LUA Development Board. So I am pretty sure there is something wrong with the FTDI driver installation. prettyPrintTo(client); client. Domoticz allows you to interact with all your switches and sensors using JSON, either interactively through a browser or programmatically from a scripting language. The ESP8266 input power is supposed to be 3. Example for sending temperature and humidity to the cloud using the DHT22 and ESP8266 - esp8266-dht22-losant. This is quite a common question that we get. Build in ESP8266-12E Module. It is not meant as a standalone post, rather as a follow up to the great blogs by Prashantha H J, Jan Penninkhof, Rui Nogueira. For start we will create blink example. request(post-https) --->devuelve un json -->lo parseamos con arduino-json Api Openweathermap Obtenemos los datos del clima a partir de pasarle la latitud y longitud obtenida de la api de google request(get-http) --->devuelve un json -->lo parseamos con arduino-json Herramientas a usar Rest Clinet para firefox para hacer las pruebas. As we already know, Android SDK provides a set of API to handle HTTP connection to send and receive data. You read a soil moisture sensor and post the value to a ThingSpeak channel. This tutorial will help you to send SMS to any registered mobile number from ESP8266. This was tested on both the ESP32 and the ESP8266. SSL is not yet supported on the ESP8266/Arduino platform (and from what I hear also broken on Nodemcu/Lua). Esp32 Json Read more. Find esp8266 by ESP8266 Community in the list. Installing the ESP8266 Arduino Addon. Espressif's ESP8266, sometimes found on boards costing as little as $2, is an amazing base for your IoT project. ESP8266 Arduino core comes with libraries to communicate over WiFi using TCP and UDP, set up HTTP, mDNS, SSDP, and DNS servers, do OTA updates, use a file system in flash memory, and work with SD cards, servos, SPI and I2C peripherals. Shown in diagram it send GET request at server and server send back HEADER + JSON to ESP8266 HTTP request :. NodeMCU Pinout. This will create a blank package. As you can see, the setup is now much more condensed and gives a much better overview of what it's doing. As it boasts TLS 1. It is critical to include the http header information provided in this example. 3 Volt and the serial port is set to a data rate of 115200 baud. ESP8266 - Easiest way to program so far (Using Arduino IDE) 22 April 2015 on ESP8266, water heater, smart house, microcontroller, Flash, Firmware, WiFi, arduino IDE, PHP, SQL, Web-Server, Tutorial. HTTP requests $. If you want to poke around the code, all the code/schematics I describe in this blog post can be found on this project's GitHub Page. 1) The code works fine if i send the json object store in data. ESP8266 Send DHT Temperature & Humidity Readings to MQTT & OLED Display. Request and Response JSON Reference. The ESP8266 input power is supposed to be 3. Despite a wealth of tutorials for setting up and writing code for the ESP8266 WiFi module, there has not been much of anything on programming this cheap wireless module with the Arduino IDE. Hi guys, I am new in the IoT, but I have more expreience in programing. Home Forums > B4R - Arduino, ESP8266 and ESP32 > B4R Tutorials > B4R Tutorial How to get and spare Json from an Http server, inline C code Discussion in ' B4R Tutorials ' started by Laurent95 , Sep 30, 2019 at 7:09 PM. I will post about IoT data analytics on another day. When you click it an install option will appear. the letter 'Ä' will be presented as \u00c4 and the Cyrillic letter 'Я' will be \u042f. In this blog i will explain how to connect the ESP8266 with HCP IOT, by developing a simple sketch in the Arduino IDE. NeoPixel - Adafruit's NeoPixel library, now with support for the ESP8266 (use version 1. I have created a Wifi temperature sensor using a Nodemcu ESP8266 board and DS1820. If you are not friendly with NodeMCU using Arduino IDE, Visit this: Arduino Support for ESP8266 with simple test code Recommended: GPIO pins of ESP8266 and How to use efficiently Recommended: NodeMCU…. Links: Arduino Json Lib Home Serial to JSON in Node. Select the ESP8266 entry. Note that this tutorial was tested with the "esp8266 by ESP8266 Community" version 2. JSON (JavaScript Object Notation) is a lightweight data-interchange format. We will directly program the ESP8266 module using the Arduino IDE. In tihs case we do not need Arduino, just ESP8266 module. This was tested on both the ESP32 and the ESP8266. If your API endpoint can only accept one at a single time, then you can write a bash script that traverses your json array and throws a curl command for each one of them. The ArduinoJson library is also capable of serializing JSON, meaning you could generate your own JSON data using data from sensors connected to your ESP8266 or Arduino. Merci @alexisdm j'ai corrigé mais ça ne change rien. DeviceHive is an Open Source IoT Data Platform with a wide range of device integration options. WiFi IoT 3 channel relay board with MQTT and HTTP API using Read more. In this case, a post corresponds to a dummy object representing a written post of a user in, for example, a website. How to call an API using ESP8266 ? In this tutorial we will learn how to call HTTP JSON GET api from an ESP8266. What is ThingSpeak? ThingSpeak is the open IOT platform with MATLAB analytics. The "this is an example message" bit should be sent after the headers separated by CR LF and doesn't need the "Body: " prefix, also there should be a Content-Length header. I'm using ESP8266 and ARDUINO UNO. For implementing a real scenario use case, you can check this previous post on how to encode JSON messages with the ESP8266. In this article I will explain how to send HTTP requests with ESP8266 module. Paste your JSON in the box and you'll know This is the Assistant for ArduinoJson 5. As it boasts TLS 1. We can use the web server to serve interactive pages, and to react to certain POST request. 00 ESP 8266 (http://nodemcu. In this case, you'll connect to the Arduino website and download a version of the logo as ASCII text. LWS is Free Software available under the MIT license (master and later). Select the proper board and programmer. I signed up for a SMS service that works via HTTP requests (REST standard). I'm working on a project aimed on sending alerts via SMS. Send data (measurements, detector status) from an ESP8266 NodeMCU to Domoticz with the ESP8266HTTPClient library and HTTP requests TCP/IP (API/JSON). The ESP8266 is a $4 (up to $10) WiFi module with an ARM processor that is great for home automation/internet of things applications. This project allows you to process data with your ESP8266 and send that data to Google Sheets in the cloud via WiFi. POST method is the type of HTTP request method used to request data from the server or send data to the server. 6/devices/esp8266/?token=A1E. The following examples based on IoT demo, another example located in SDK examples subfolder, similar to AT demo, but run in a different/advanced way, and it can cooperate with website, devices/phone app, etc in a better way (curl), without additional MCU control. Esp32 Json Read more. This is just a quick and dirty way of flashing your ESP8266 with a sketch to call a Webhook. This is an example of a HTTP request with a JSON body. I tried the same cable with a Teensy 3. ESP8266-12E has built-in Wi-Fi which it uses to access the server.