Questions tagged [web-server]
A web-server is a system which delivers data such as web-pages to a client system.
233
questions
0
votes
1answer
31 views
How to access GPS location without internet
I need to provide a basic geolocation service for my clients. I built a location service based on the phone geolocation. It works great, not a problem. My problem is that some of my clients don't have ...
0
votes
1answer
33 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 ...
1
vote
0answers
32 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 ...
0
votes
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 ...
1
vote
0answers
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. ...
0
votes
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> \
<...
0
votes
0answers
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....
2
votes
1answer
40 views
ESP8266 SocketIOclient constant disconnect with Python WebServerSocket
I am writing a program that echos back the message sent to the web socket server on a host machine. When running the ESP module, the connection is established but immediately disconnects as seen in ...
0
votes
1answer
34 views
How do I make two (or more) pins available on my server url?
I have a webserver configured on my esp8266 with is set to fire off electrical relay0 on my 8 port relay board.
The device initializes relay0 perfectly and without errors.
But when I configure the ...
1
vote
0answers
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 ...
0
votes
1answer
41 views
Connecting Web Server in GoDaddy Hosting
I have a domain. It is hosted by GoDaddy. I need to connect that server and receive some data by executing PHP files.
I am not sure about the components.
Tutorials on internet describes how to control ...
2
votes
1answer
50 views
Run method Every Hour Passes
I have a method. I need to trigger it every hour passes.(Cron Job)
I mean;
10.00 p.m -> Trigger
11.00 p.m -> Trigger
12.00 p.m ->Trigger
...
...
Card: Arduino Uno + Wifi Shield.
Draft Code
...
0
votes
1answer
32 views
Is there a way to send a String via a Webserver Textbox without the use of the SD card?
Since my last post, I've been trying to do some extra things with my Stranger Things Wall Project.
I connected a LCD Screen (16x2) that will take any text being processed to the wall and show what is ...
3
votes
0answers
77 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 ...
1
vote
1answer
423 views
Why we are using client.flush() in the program code ,when we connect Esp8266 with internet or web server?
I am using Esp8266 Wifi modular (12-E) for controlling a led through the access of wifi/webserver.
I have written code in Arduino ide taking various references from the google.In the code, I didn't ...
1
vote
0answers
58 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, ...
-2
votes
1answer
61 views
Most Efficient & Cost Effective Home Automation Setup
I managed to build a system using Wemos D1 R1 connected to my website to retrieve data to power on or off a 5V relay. Now I would like to expand the project to control all my house outlet. Assuming I ...
2
votes
1answer
55 views
Run function concurrent to server.available()
I have a Arduino UNO WiFi Rev2 board that runs WiFiServer serving as a web server. The server listens and accepts clients using server.available(). I also want a loop that controls a servo in ...
1
vote
2answers
312 views
Controling 5V relay with Wemos D1 R1
I would like to control a 5V relay with Wemos D1 R1 module through webserver. I'm using the following modules:
Tongling 5vdc Relay
Wemos D1 R1
I'm using the following schematic:
and here is the ...
0
votes
0answers
215 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&...
0
votes
1answer
317 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.
2
votes
1answer
54 views
Latency in Websocket
I am using Websocket, for a communication from my mobile phone to a NodeMCU, and transmitting 4 channel, data, through 4 different Websocket Ports.
the NodeMCU control code is here:
// ============ By ...
1
vote
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 ...
0
votes
0answers
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 ...
0
votes
1answer
29 views
ESP32 Cannot assign value to string. Getting wrong value
Hello I have problems with strings in my sketch. I assingn values to my string (for example tempStrReturn) in the functions setNr1, setNr2. If i pass the value 1 to the function i get "" or "...
0
votes
0answers
201 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 ...
0
votes
0answers
24 views
Why does server.streamFile download does not work with SD.h? [duplicate]
This is only a little test code so i can focus on the problem.
At first a file is written on sd card with the timestamp given in the variables. This works fine.
At SD_file_download() i open a File ...
0
votes
1answer
51 views
How to connect multiple NodeMCUs and 1 PC over wifi and have PC control NodeMCUs? [duplicate]
I am trying to design a laser tag system using multiple NodeMCUs in the guns. I am trying to figure out how to connect and control them over WiFi. I also need a computer connected that will control ...
0
votes
1answer
53 views
Securing ESP8266 connections
In my setup, I've got a number of ESP8266 devices around my home controlling various devices like my boiler and some lights.
They're all controlled by a central smart hub on a Raspberry Pi with a ...
5
votes
1answer
615 views
What does []() argument in function mean?
I am working in ESP8266 AsyncWebserver library and have been using this [](parameter) as an argument to some functions as shown below but does not really know what it means. Being a neophyte I am ...
1
vote
1answer
127 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'...
0
votes
0answers
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 ...
-1
votes
2answers
58 views
Arduino webserver POST receive varriables
I have been learning lower level data reading on internet communication
As a part of bigger project I am testing web interface.
So far I could get main website displayed and by seeing the web-address ...
0
votes
0answers
105 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 ...
1
vote
1answer
167 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]);}. ...
1
vote
1answer
296 views
Serialize JSON as response to HTTP request
I'd like my ESP8266 to provide some JSON endpoints. I want to use ArduinoJson for serialisation. While this works in general if I serialize into a String and return this String afterwards, I was ...
0
votes
0answers
306 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 ...
0
votes
0answers
85 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 <...
0
votes
1answer
49 views
Can you make Arduino Uno send information through a WiFi module to a server?
A lot of tutorials are about how to control Arduino through WiFi, but I need my Arduino to send information about motion sensor activity to a server. Is that possible?
0
votes
0answers
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 ...
0
votes
2answers
266 views
ESP Web Server calling javascript function
Is there a way to call javascript functions from ESP?
I don't want to call ajax requests every few seconds. I want to update my values only when they change.
Can it by done? Thanx.
0
votes
1answer
84 views
Refreshing a web-page hangs after few times
I'm using a Nucleo F429ZI board and I wrote a sketch that enables a simple web-server:
#include <LwIP.h>
#include <STM32Ethernet.h>
const int WEB_PORT = 80;
EthernetServer server(...
0
votes
0answers
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 ...
0
votes
0answers
283 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 ...
0
votes
0answers
31 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>
#...
0
votes
0answers
56 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 ...
1
vote
0answers
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 ...
1
vote
1answer
437 views
ESP8266 Webserver ESP8266WebServer variable html page (not as one const char)
The aim is to display a non-static html page depending on some variable condition.
The code I created hast the problem, that the esp8266 is ressetting in the moment I request the page.
const char ...
1
vote
1answer
497 views
ESP8266 Webserver ESP8266WebServer move Handler-Function in separate .h .c file
The plan is to create a bigger project and to split the ESP8266 webserver-code over several modules (.h .c files). The main problem is that the ESP8266WebServer server is not declared in the index.h ...
0
votes
0answers
32 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 ...
