Questions tagged [web-server]

A web-server is a system which delivers data such as web-pages to a client system.

67 questions with no upvoted or accepted answers
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Sending data from Arduino UNO as a SOAP request

I have a servo motor on one end which can be turned ON and OFF with web service sending SOAP request. In the other end I have my Arduino UNO with ESP8266. Currently, I am able to send HIGH or LOW ...
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5k views

Arduino Ethernet shield server and client at the same time

Hardware: Arduino Mega 2560 Rev3 Ethernet Shield Rev3 A sensor Goal: Take value from sensor, upload it to ThingSpeak. Host a web page on the Arduino. Question: I've done both things in the past. ...
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75 views

ESP32 HTTP Server request interrupts Telnet session

I have an ESP32 application that uses a web server as a user interface. For auditing and debugging during development I use Serial; however, that is impractical in the installed system. So, I decided ...
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688 views

HTTPS POST method fails in esp32

I was trying to connect with server but, I was unable to post the data. I have added the SSL key to connect with server that is happening but HTTPS POST is not. I tried the same method with http, I am ...
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2k views

Sending data from webserver to Arduino

Hello Arduino enthusiasts! I've been working on a keypad lock system for school lately and I need some advice.Basically, my code checks if the entered passcode is the same than a predefined passcode ...
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9k views

ESP32 in Arduino-IDE with FS.h and SPIFFS

I'm working on a webserver on ESP32 in Arduino IDE and would like to load an html-file. Tried to use SPIFFS.open from the library FS.h from github. Errormessage says SPIFFS was not declared in this ...
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231 views

Arduino UNO WiFi RestServer returning “not found”

I'm trying to run RestServer on my Arduino UNO WiFi, and I'm currently using the tutorial from Arduino: http://www.arduino.org/learning/tutorials/boards-tutorials/restserver-and-restclient Everything ...
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28 views

Error initializer-string for array of chars is too long using ESP32 Webserver

i tried to use an asynchronic webserver for a new project with friends using this tutorial. We want to run an FFT while also changing some settings via the webserver. Since the tutorial only put code ...
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23 views

Help with ESP32-CAM “AI THINKER” module

I'm trying to make a RC car (with a surveillance camera if possible, using the web-cam code that comes with the ESP library) using a ESP-32 CAM as a wifi module to control the car using my computer. ...
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105 views

How to get text type form data from a website hosted by esp8266 webserver in arduino

I am learning to use esp8266 as a web server. I have done a simple example of controlling the on board LED from a HTML page hosted by esp8266. As a further improvement I wanted to add a password ...
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57 views

Using Javascript XHR to upload a file to the ESP8266 fails

In the past, I was experimenting with a method of uploading files to the ESP8266 using the stock ESP8266WebServer class as the backend. The frontend is embedded in the firmware, and it runs offline, ...
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1answer
48 views

3 input (on/off/off with delay) to control 1device using ESP8266 as Web Server

I want to control one device in three ways : turn on / turn off / turn off with delay. To do that i use an ESP8266 web server + android phone app. The problem is that turn off with delay wont work. It ...
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1answer
125 views

Sending Variable to IFTTT via ESP32 using Asynchronous Web Server

I have been trying to send three variables to IFTTT from my ESP32 using Asynchronous Web Server. However, I couldn't set the "URL" that was supposed to be the response that will trigger my IFTTT. Here'...
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127 views

ESP8266 keeps restarting after a few hours of use and dead after 1 month of use

I have tried to make a water heater relay controlled by an ESP8266 (NodeMCU v1.0). The ESP8266 is connected to a central WiFi in my house, the ESP8266 also has its own WiFi so I use STA and AP mode ...
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278 views

Creating global webserver without port forwarding

I'm setting up a "Smart House" project with Arduino+Esp01F(Serial Communication). But I want to make it global server. For it I use WiFiEsp library. But for it I must Get any port (neither 80 nor 443),...
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1k views

Using ESP32-CAM (with ov2640 camera image sensor) to send image via USB

I was trying to obtain image from ESP32-CAM (with ov2640 camera image sensor). I obtained the image through camera web server by connecting the ESP32-CAM and PC to same wifi network. A USB to TTL ...
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61 views

Why sometimes parsed data is null in WiFiEsp?

I'm setting up web server with args. As host.com/?pin=9. I parsed the response by indexOf and substring functions. In first connection response has been successfully parsed and number has been parsed ...
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63 views

Creating WebServer with 5000 port with AT command(ESP-01f)

I'm setting webserver with toggle led. I want to create global webserver. I`m mean hat use server with global ip. For it I must use port too. global ip/local ip:port. I want to create on 5000 port. I'...
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174 views

ESP8266 webserver does not return latest HTTP response

I tried getting a HTTP response from an ESP8266 which is in HTTP server mode, I am getting a response but not the latest one, response is always one command previous to that of my request to the ESP. ...
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1k views

Arduino HTTP post image to external server

I'm trying to send an image from SPIFFS to my external server. When pictures are taken, they are saved into "/pics/" directory within SPIFFS. Ultimately, I'd like to post all the images saved onto "/...
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416 views

Cant get rid of Soft WDT reset using ESP8266

Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly but after while i always get a watchdog timer reset. (If ...
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196 views

Webserver on Arduino Mega with Ethernet Shield

I am working with an official Arduino Mega. I have mounted an officiel Ethernet Shield rev 2. Everything works great, i have wrote a very basic webserver. I wanted to host a bootstrap css file on my ...
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130 views

Sensors are not function with ESP8266 WeMos-D1R2

I attached all sensor into the Wemos-D1 for uploading the sensor data to the server. but when I upload the data to the server, it connects to the server but cannot save the data into the database and ...
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3k views

Arduino ESP8266 Webserver SD

I connect Micro SD card adapter to my esp8266. I uploaded the SD webserver example sketch into the esp8266, everything works perfectly once I created index.htm, now I add LED to digital pin 4, now, ...
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592 views

Exporting an html for esp8266

EDIT: Added "web page source" ("In the end", :D ) (Please, sorry if this question isn't in the right place, feel free to move it to that place) Here I have a problem: In my house I have a self-...
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52 views

checking if user is opening root entry point of the IP address on esp8266 webserver

I am trying to open load a webpage from ESP8266 that displays temperature and humidity of my room if I only type root URL:192.168.1.89 GET / HTTP/1.1 Host: 192.168.1.89 Connection: keep-alive Upgrade-...
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1answer
853 views

Wemos D1 mini freezing after a few minutes

I´m using a Wemos D1 mini board to control a RGB LED Strip and programmed a simple code with the Arduino IDE. The Wemos conects to my Internet just fine and with the IP adress I can change the RGB ...
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874 views

Exception 29 ESP12E Arduino

I am getting exception 29 every time I make request to HTTP using GET function. I am requesting HTTP every 20-30ms but using millis I am only reading request at 100ms in order to avoid any overflow or ...
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548 views

Make a GET Request GPRS

I'm building a weather station that sends the data to a webserver via GET request. I was wondering if you guys can look into my code and help me. I looked all over the internet and can't find what'...
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68 views

How to make the Yun allow access to a resource

I have replaced /www folder on the Yun (backing it up first), how do I make it so the Yun will redirect to the new index.html? It, right now, gives Access to this resource is forbidden when I go to ...
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224 views

Yun - FileSystem.Open prevents client.println from outputting to web page

The below code is meant to display lines stored in a text file to an arduino based web page (it's a IR gate monitoring solution). When I visit I can execute client.println("hello") and I see the ...
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521 views

How to use console.log message from nodejs server, to control led pin 13?

I want to use Arduino Yun as a client, that connects to my nodejs server, receives a message from nodejs and then change led pin 13 on/off according to the message send. I have this example of a ...
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0answers
534 views

Arduino GSM Shield web server hangs

I use official Arduino GSM Shield with Uno R3. I uploaded web server examples from official GSM library. I use a simple python script to make TCP/IP connections to my GSM Shield web server. I send ...
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700 views

Can you interface GSM, WiFi, and Bluetooth LE shield to Arduino?

I have a project that requires the following three shields and I was wondering if the Arduino has enough space to interface all of them at the same time. I am thinking of connecting each shield into a ...
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1answer
21 views

HTTP_GET not clarified in scope

I'm trying to do an async webserver with access point using an ESP32. It's a little bit of a mix between This tutorial for AP and async and this tutorial since it's also with an async webserver and it ...
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0answers
37 views

Peculiar relay behavior from POST

I am trying to toggle on/off between two separate HTTP request. One submit button to turn it on, and another separate submit button to turn it off. I expect the device to launch in the off/low 0V ...
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0answers
32 views

How do you concatinate an interger with a string in server.send data?

I have a class I am trying to add its global counting variable value to int switch0; class void webpage() { server.send( 200, "text/html", "<html> \ <...
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28 views

incompatible types in assignment of 'const String' to 'char [32] using server.arg

I am trying to create a class and getting getting the error incompatible types in assignment of 'const String' to 'char [32] when I declare char inString[32]; and try to set it as inString = server....
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205 views

TCP client readStringUntil only when data exists

I have the attached script that reads data from a socket server (it is PHP at the server end). My problem (I think) is that the readStringUntil() needs a test above it, so that it "reads up to \r&...
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1answer
306 views

How to Set RTC in ES32 using NTP server?

I am working on ESP32 And want to set RTC from the NTP server. How can I get epoch value I have done this thing on CC3200 launchpad and used an NTP server library to obtain epoch value.
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39 views

how to set up an ESP8266 as a webserver

I would like to set up an esp8266, connected arduino as a webserver, specifically, one that has its own IP, and is stand alone, not connected to other networks, and offers its sensor info as the ...
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195 views

File Upload and sending Form data to the ESP using HTTP POST

i want to upload a file from my pc to the esp2966 webserver with sd card. all works fine. But i want to transmit some extra data from a input form field. The Upload works good. in the browser ...
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43 views

Parsing Data from local websever

i´m trying to build a little monitor of an ESP8266 and an OLED display that displayes the Status of a Robotarm. The robotarm is controled by a RAMPSboard that has a webserver, so i can check the ...
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101 views

Uploading file via AJAX fails on ESP8266

I have an interesting issue. I have created a copy of the web-server OTA updater library that is designed to print the progress of the update. I cannot of course show the progress while it's rebooting ...
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301 views

Controled in the led by Arduino UNO to Firebase through ESP8266-01+ MIT App Inventor

exchange community , help me community :( I want to control led by MIT App Inventor with used Arduino UNO to Firebase through ESP8266-01 Notes : 1-The led connected pin 11 on Arduino-Uno 2-The ...
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84 views

How to get the body of an HTTP request?

I want to read a binary body datas from an HTTP POST request. The context is that I'm making a LED strip controller and I'm currently using this code : #include <WebServer.h> #include <...
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73 views

Send data to lcd and server via esp8266

The code below, as it stands, works correctly. It connects to a local server (so Token and everything else is no problem sharing) and transmits the data via post. However, when I uncomment the lines ...
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268 views

Arduino uno wifi rev2 get status code from server data

I'm having trouble figuring out how I can extract data from my server call. I am trying to check whether the code that was entered in a boxlock matches the code stored in our database. If the code ...
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280 views

Arduino uno wifi rev2 get json data from api

I'm not so familiar with Arduino UNO wifi rev2. I bought it for a project that I am working on. In general, I have a box that you can open with a code. The Arduino should make a call to the API and ...
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30 views

Getting maxretry error when trying to ping using python requests or urllib3

I have written this code working on SimpleHost example from ESP8266Ping library, the code works, #include <ESP8266WiFi.h> #include <ESP8266Ping.h> #include <ESP8266WebServer.h> #...