Questions tagged [web-server]

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

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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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54 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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80 views

How to display CAN BUS information on EPS32 web server?

I try to display the transmitted information from CAN bus on ESP32 web server. I saved the CAN.read() in a buffer receivedChars[i] and try to display the data by client.println(receivedChars[i]);}. ...
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206 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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59 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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50 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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172 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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163 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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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> #...
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47 views

8266 get uint8_t PROGMEM array from uploaded file

I'm new programming arduino. I have connected an Adafruit thermal printer to an ESP8266 board. I've the example code for use the board like a webserver that allow upload files. What i want is to ...
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93 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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29 views

Extend Pyduino over wireless network

I followed a guide to control my arduino uno using a python web server API (flask), and it works like a charm using the COM port on my PC. I would like to extend this over the network with an ESP8266 ...
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29 views

command keeps echoing because web page tries refreshing

I want to execute a action only once when I press web page button but as the page tries refreshing the action gets executed in a loop. I am using the wifimanualwebserver example for esp8266. Please ...
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65 views

connection to ESP using pyVisa

I'm building a small LXI device using a the OLIMEX ESP32 POE Board. Sending commands to the device using pyVisa works fine, but queries don't. Only the IDN? query works. From the ESP I get the ...
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484 views

Control DC Motor with Arduino Uno WiFi Rev2 Html Slider Code

I would like to control my dc motor using the Arduino Uno WiFi Rev2 using an html range slider. Now I can control the motors speed and direction using push buttons just fine. My code is posted below ...
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52 views

How to implement server.on() without any libraries?

I was trying to setup a web server with Arduino and ESP32, without using the ESP32 libraries. Currently I'm able to display a webpage(a form with single submit button) from the server, with only using ...
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59 views

Delayed response from web server

I am trying to implement a web server in ESP8266 that will handle simple HTTP GET requests by initiating an operation (e.g. move a stepper motor to the requested position) and return a response when ...
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26 views

Nodemcu POST Response “-1”

Nodemcu device is returning HTTP response -1 for a POST request on django rest api. I tried the below http request to Postman, and it works perfectly fine. http://localhost:8000/api/datalogs/?plant=...
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4k views

WebSocketsServer.h: No such file or directory

I'm trying use the NodeMCU WebSocket. I downloaded the required libraries from: https://github.com/Links2004/arduinoWebSockets and pasted them in my Arduino libraries folder. I uploaded my code but ...
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2k views

Send Arduino data to PHP inorder to upload in MySQL database

I'm trying to send arduino data to my online web server using a Arduino Uno and a Ethernet shield. I used POST method for sending data and tried sending data to my sever (add.php) using a online POST ...
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202 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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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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45 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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184 views

ESP32 OTAWebUpdater only works on mobile

I'm experiencing something strange. I opened the default ESP32 example "OTAWebUpdater" in the ArduinoIDE and modified just the network part (I created a soft AP instead). The problem is, when I ...
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73 views

WiFiServer Stops After Reconnection to WiFi

In the following code, the Arduino is reconnecting to the WiFi after several loops. The idea is to check and re-establish WiFi connection every 30 minutes or so. However, the WiFiServer seems to ...
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34 views

Connect Arduino and ESP8266 NodeMCU

I want to connect multiple sensors and see their measurements via ESP8266 Web Server. But, the problem is that ESP8266 has only one analog pin and I can't connect multiple sensors to it, so i need to ...
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100 views

Creating WebServer ip:port on esp8266 module

I creating Clever House with wifi. For this I'm using ESP8266 as module connected to Arduino. They communicate with SoftwareSerial. And there's a problem with global webserver on ESP8266. That I think ...
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139 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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1answer
1k views

Esp8266 not responding to GET request from Android app created using MIT App Inventor

I hope I am posting this question in the right section. I am making a Smart Home Project for my college semester finals. I am using an Atmega328p microcontroller along with an ESP8266 (Esp 01). The ...
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423 views

ESP12E Soft WDT reset stack trace leads to libraries

Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly when the web client is closed but when i leave the ...
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153 views

Setting up WiFi on NodeMCU with wrong password drops ESP8266WebServer connection [duplicate]

I am trying to build a simple demo with NodeMCU module: NodeMCU opens AP and sets up web server Client connects to this AP, sends payload to web server to setup WiFI on the module and receives ...
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181 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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56 views

I have the code printing the data I need but don't know how to connect the data on ESP8266 IP web server

#include "DHT.h" #include "NewPing.h" #include <SoftwareSerial.h> #define DEBUG true SoftwareSerial esp8266(11,10); #define DHTPIN 2 // DHT-11 Output Pin connection #...
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1answer
511 views

Is there a real alternative now to using GSM for data sending?

I would like to create an Arduino system that sends the temperature in a place outdoors to a server. I've read in Internet forums that there might be alternatives to GSM and GPRS technology for ...
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1answer
518 views

Replying with a html page in HTTP Web Server using esp01 and ArduinoIDE

Now there are many ways to reply with a webpage content to a user who is accessing the web server, But Keeping in mind to use as less space as possible, I was trying something new, Since i didnt got ...
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1answer
1k views

Problem with nodemcu esp-01 can't connect to wifi

i've been working on a project that im using an esp8266 nodemcu-01 as described in the title, and i've been having some headache with this module, first because after searching i figured out that the ...
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1answer
240 views

GSM library_ all examples ar working except GPRS?

i am using arduino uno and sim808. i connected the sim808 to pins 2,3 on arduino uno and used GSM library. i tested all examples: make and receive a call or messages. the part of GPRS initialization ...
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51 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
318 views

ESP8266 sketch worked a few times but now doesn't seem to run

When I flash my code: /* Create a WiFi access point and provide a web server on it. Author: Lucio A. Rocha Last Update: 21 Aug 2016 */ #include <ESP8266WiFi.h> #include <WiFiClient.h&...
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454 views

Transfer byte-buffer with ENC28J60

How do I transfer a series of byte[256]-buffers to a server with an ENC28J60 Ethernet adapter? I get blocks of uint8_t from an Arducam camera module and I'd like to transfer them to a host. Does ...
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1answer
823 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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2k views

WiFiESP constantly losing connection

I am working on a traffic light with a ESP8266-01 wifi module on an Arduino. The wifi card should act as a server and wait for a request to come in at /R (red), /Y (yellow), /G (green) or /O (off) and ...
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1answer
679 views

Arduino Mega web server always returning JSON data even if JSON is not passed in URL

I am trying to return JSON data if JSON is found in the HTTP header, and if not I am trying to display a normal page. But instead it always displays the JSON text, even if I do not pass the JSON in ...
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1answer
2k views

Arduino-ESP8266 socket

I am programming an ESP8266 module via Arduino IDE. I basically have to use it as a server that can light up a led when a client sends a request. This is okay but I have to implement it with a NONCE ...
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109 views

Arduino Processing client fails to upload file to PHP server

Background I want pressure sensors (they are working) to trigger the built-in camera and take a picture when cat goes to bed, upload the pic and email me so I can go check out the real-time image on ...
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4k views

ESP8266 problem as Web server

I asked a previous question about esp8266 that made a lot of things clear for me that esp8266 is very powerful and can be independently used as the webserver now, I have used the following library(...
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1answer
1k views

Arduino YUN server crashes after few hours!

I have made a simple server using the YUN SERVER and CLIENT Libraries./ The server runs on a loop and waits for a client to connect. After connection it sends the client a simple message and then ...
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1answer
5k views

Webserver with Arduino Yun without SD

I'm trying to set up a simple web-server with Arduino Yun without an SD card, i.e via REST, if I understood it right (I'm new to some of these stuff). I want to be able to "get" data (sent by Arduino) ...
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5answers
5k views

A simple login page on Arduino Uno

I'm trying to setup home automation system controlled with webpage stored in SD card of Arduino, I was thinking if it was possible to set a login page, only combination of correct user id & ...
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2answers
2k views

Arduino Mega & WiFi Shield; why web server every time says my A7 pin reads 0V?

I have got Arduino Mega 2560, Arduino WiFi Shield and resistor 1.5K. Now PWM 2 is attached to the resistor then attached GND. 5V is attached between PWM2 and resistor's up point. I want to read the ...