Questions tagged [web-server]
A web-server is a system which delivers data such as web-pages to a client system.
232
questions
45
votes
11answers
9k views
Is an Arduino capable of running 24/7?
I'm making a simple Arduino web server and I want to keep it turned on all the time. So it must endure to stay working continuously.
I'm using an Arduino Uno with a Ethernet Shield.
It's powered ...
9
votes
2answers
10k views
How do I use Arduino and node.js?
I am new to Arduino, however I have experience in web development, lately I have been using, meteor js and the mean stack for different projects. However, I am open to trying any language for ...
7
votes
1answer
540 views
On Arduino Due webserver, there is a 5 second delay on Windows, only when connected via native port
My Due webserver was working perfectly fine for months when connected to Linux via the native port.
But when connected to Windows 10 via the native port, if the Arduino webserver is idle for about 5 ...
6
votes
1answer
3k views
Serving binary file with ESP8266WebServer
I am currently using a Nodemcu ESP8266-12E with the Arduino IDE in order to control my boiler. Everything is working fine, however I haven't figured out yet how to serve binary files, eg. images. (I ...
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 ...
5
votes
2answers
18k views
How to receive data from my server database to a variable in my Arduino?
I am learning to work with the client - server communication. I am able to communicate with my server and able to store values in the table. But I want to receive one of the specific data from the ...
4
votes
1answer
12k views
Arduino webserver: faster alternative to “indexof” for parsing GET requests?
I have a webserver successfully running on an Arduino Mega, but I'm trying to make sure it's parsing the GET requests in the fastest way possible. This is what the relevant code for the GET requests ...
4
votes
2answers
1k views
How can an Arduino Mega 2560+Wifi Shield 2.0 (SeeedStudio) receive data from database in a XAMPP server on my PC?
I'm trying to connect my Arduino Mega via Wifi to my XAMPP server. My main objective is get a value from my database and store it on a variable in Arduino code. With this new variable I'll be able to ...
4
votes
0answers
2k views
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 ...
4
votes
0answers
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. ...
3
votes
2answers
4k views
How to allow cross-domain requests on ESP8266WebServer
I am using a Raspberry Pi running Chrome (handling the user interface) and connecting via ajax to an Arduino D1 compatible using the IP address as follows:
$.ajax({
type: "GET",
...
3
votes
4answers
743 views
How to assign text stored in a local file to a string at compile time
I'm developing a program that uses the HTML server in the WiFi101 library.
My hardware does not have SD card storage so all source html needs to be stored as strings in the sketch at compile time. ...
3
votes
2answers
440 views
Design Dilema — What hardware?
I'm trying to build a smart thermostat for a particular application. I have the following design criteria and goals for the system:
Must be able to set up and monitor the device from either a mobile
...
3
votes
2answers
1k views
Connect Arduino Uno to video camera's web Server via Ethernet (not working)
I work with cameras in the film and TV industry. A project I have just started tinkering around with is building an Arduino Uno-based box that would automatically collect the metadata (settings, etc.) ...
3
votes
1answer
1k views
Bluetooth Master and Slave to track device's locations
I'm trying to create an app for my science fair that uses bluetooth to track people in a determined place.
I was thinking about one Arduino system to receive all the information and transmit through a ...
3
votes
1answer
3k views
How to read a Text file from server and store to a separate variable?
I am working on reading a text file from the server, using http://arduino.cc/en/Reference/GSMClientConnected. It gives me this code:
char path[]="/asciilogo.txt"
I want to store only the contents ...
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 ...
2
votes
2answers
20k views
Multiple client server over wifi
Trying to setup a server on Arduino to support multiple clients,
I am able to support one but I don't want to flush that client to make another connection.
#include <ESP8266WiFi.h>
const char* ...
2
votes
2answers
2k views
Is it possible to use AWS and Arduino Uno to upload data from Arduino to a website running on my localhost?
I was wondering if it's possible to send data from my Arduino Uno (e.g. from the temperature sensor) to the Amazon Web Service RDS or anything there, which will then upload the data to a website on my ...
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 ...
2
votes
2answers
476 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 ...
2
votes
2answers
10k views
'content' is not captured
I try to make a variable that can be modified from the server, using and ESP8266.
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <...
2
votes
3answers
2k views
Ethernet shield/WebServer problem: 'server is at 0.0.0.0'. Any suggestions how to debug it?
Ethernet shield problem. When running the WebServer example sketch, the Serial Monitor shows that server is at 0.0.0.0. Any suggestions how to debug it?
2
votes
1answer
118 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 ...
2
votes
1answer
446 views
Are there any Wi-Fi modules for the Arduino Uno that may connect to an external Wi-Fi Antenna?
I have an Arduino Uno I need to connect to Wi-Fi to make HTTP POST Requests to a Raspberry Pi Web Server.
The Arduino is located only about 30 feet from the AP, but there is a brick wall in the line ...
2
votes
1answer
730 views
Ethernet shield programming
This is first time programming with Ethernet shield . I want to test the web server application with my Arduino. I have an Arduino Uno, Ethernet shield, and a potentiometer. Below code being uploaded.
...
2
votes
1answer
39 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 ...
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
...
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 ...
2
votes
1answer
2k views
Wifi server to control led on and off from local webpage.. - ..if statement doesnt work…
Im a newbie on this arduino thing and I would like to build a curtain remotecontrolled from a local webpage with 2 buttons... a up an a down...
I got the connection via my phone the the local page ...
2
votes
1answer
6k 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 ...
2
votes
0answers
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 ...
2
votes
0answers
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 ...
2
votes
0answers
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 ...
2
votes
0answers
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 ...
2
votes
1answer
3k views
Arduino Ethernet and Uno R3 as a firewall
Is there a way to program the Ethernet Shield and Uno R3 to act as a firewall without using a huge chunk of the allowed bytes on the R3? I plan on using a DC adapter to plug the R3 into a wall, and ...
1
vote
2answers
626 views
Using a web server with Arduino
So I am not new to arduino, however, I am new with web servers. I am working on a project that can control a robotic arm that is at one location and I can be at my house. I know basic HTML, Basic CSS, ...
1
vote
1answer
43 views
Webpage values wont update
I've been trying to run the following esp32 LED PWM code to change the LED's brightness, and show the current PWM duty on the webpage, but the PWM values on the webpage won't change until I hit the ...
1
vote
1answer
289 views
Mega <> esp8266 comms sending baffling data
I have Wemos Mega-ESP8266 board. I have uploaded a simple WebSocket server on the ESP...
#include <ESP8266WiFi.h>
#include <WebSocketsServer.h>
const char* ssid = "SKYNET";
const ...
1
vote
5answers
3k views
Create own apache web server on Arduino Uno… just like you can on a raspberry pi?
I was wondering if I could create my own apache web server on my Arduino Uno, just like I did on my raspberry pi - https://www.raspberrypi.org/documentation/remote-access/web-server/apache.md
Anyone ...
1
vote
3answers
4k views
client.connect() fails except the first time
I am communicating with the Web server's database via Arduino GSM shield + GPRS connectivity
void loop()
{
if (client.connect(server, port))
{
.......
}
else
{
...
1
vote
1answer
295 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 ...
1
vote
1answer
435 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
618 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 ...
1
vote
1answer
625 views
Error Compiling sketch for Arduino Uno(ld return 1)
I have got an telnet server with esp8266 + SoftwareSerial+ UNO, and here I want to on led with command ON .
will be 1 or 2. It is for recive 1 or 2 numbered pins.
And I extract pin from request with ...
1
vote
2answers
1k views
ESP8266 Webserver not reachable after 2 minutes from reset
I have a Keyes Espressif ESP8266 NodeMCU, I have two LEDs that I want to control which are connected to the ESP. When I open the webpage http://10.0.0.5/5 after uploading the sketch it works fine. If ...
1
vote
1answer
2k views
How to HTTP post a data to Node express API from a Arduino esp8226?
I am HTTP posting a data to this web API https://morning-cliffs-85779.herokuapp.com/api/users from an Arduino connected to esp8226. I am using the wifiesp library to HTTP_POST data.
The REST APIs are ...
1
vote
1answer
4k views
How do I get the request params from a ESPAsyncWebServer?
I currently have the following code
server.on("/on", HTTP_POST, [](AsyncWebServerRequest *request) {
Serial.println("ON hit.");
String message;
Serial.println(request->url());
if (...
1
vote
1answer
463 views
How to establish a connection between an Arduino and a web server via ESP8266 [duplicate]
I'm working on a IOT project where three or more IOT device communicates with a web server. The IoT device will have Arduino UNO which is connected to a ESP8266 so internet access is available. ...
1
vote
1answer
4k views
Arduino Web Server: Receiving response from web form
I am using an Arduino Mega and I have a basic webpage built using EthernetServer for the connection and EthernetClient to write the HTML to the client. I have a simple web form:
client.println("<...
