Questions tagged [ethernet]

Ethernet can be used for cabled communication between an Arduino and a computer, server, or website. For question concerning the Arduino Ethernet board, use the tag "arduino-ethernet" instead.

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46
votes
11answers
7k 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 ...
31
votes
6answers
41k views

How to get HTTPS on Arduino?

Put plainly: is there a way to get an HTTPS connection on the Arduino? I have been looking in to it, and I have found it is impossible with the standard library and the Ethernet shield, but is there ...
12
votes
1answer
2k views

Internet connectivity for the Arduino Due using AtmelStudio?

What hardware and software solutions work and what are the tradeoffs for connecting an Arduino Due to the internet? I gather the ethernet hardware is much cheaper than WiFi hardware (€29 versus €69). ...
10
votes
2answers
721 views

Arduino Uno R2 and Ethernet Shield R3 compatibility

I bought an Ethernet Shield R3 for my Arduino Uno R2, but since R3 has extra pins it does not fit. Can I use the shield? Should I cut off the extra pins. What do I need to do to make it work?
7
votes
4answers
6k views

How to interconnect multiple Arduinos with a Rpi to control home-lights/switches

While planning the lightning infrastructure (wall-switches and lights) of my new home (it's still under-construction) I choosed to go through the "automated route" way and due to my background (I'm an ...
7
votes
3answers
684 views

Multiple SPI device

I want to connect Ethernet board (W5100 HR911105A) to Arduino Leonardo with SPI and I also want to connect SD reader. When I test these boards separately everything working. But when I connect them ...
6
votes
2answers
547 views

Webserver on Arduino

How can I run a webserver in a Arduino Uno? I want to use my Arduino to monitor things in my home such as temperature. I want to be able to access this data through the internet.
5
votes
2answers
613 views

Is the arduino hackable when using communication shields?

Let's say I have an arduino Uno connected to a W5100 ethernet shield. The arduino communicates with the ethernet shield using the tx0 and rx0 pins. When I upload a new script to the arduino using USB, ...
5
votes
2answers
3k views

WizNet W5100 not connecting to modern switches and routers

I have an Arduino data collector with a W5100 module (see bottom of picture). Simple fixed IP connection: byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; byte ip[] = { 192, 168, 1, 242 }; ...
5
votes
2answers
4k views

What's the difference between different Ethernet Shields?

I am working on a project with Arduino and I need an Ethernet shield. but after searching in some electronics shops I found there isn't only one but a lot. I don't know which one is better and what ...
5
votes
1answer
267 views

Disconnect Ethernet Shield

I'm trying to use the Ethernet Shield and the EasyVR (voice recognition) together. The Ethernet shield uses the same pins that the EasyVR, but the easyVR works fine if I don't call Ethernet.begin(). ...
5
votes
1answer
4k views

How to disable Arduino Yun to work as Access Point and set it to work as needed?

I am using Arduino Yun and I would like to disable it to work as Access Point. That is, I don't want that it is displayed in the list of available networks. Then I would like to set and use it (...
5
votes
1answer
520 views

Uno with LCD acting strangely - power issue?

I've got a Uno (Elegoo UNO R3) running with - Ethernet shield (Kuman K15), - 4 relay board (Elegoo 4 Channel DC 5V Relay Module with Optocoupler ) - Matrix Orbital 2041 LCD connected via I2C (11mA ...
4
votes
5answers
9k views

MQTT client on Arduino + SIM900

I have used the pubsubclient library for Arduino for communicating with an MQTT broker in the past, however the library works only with Ethernet connecction. I need to use GSM in my application and am ...
3
votes
2answers
465 views

Help putting an Arduino project on the Internet

I'm working on quite a big project and I need few advices. Basically, Arduino will be receiving data (Strings) and will work with it. No problems with that, but I don't know what to do with receiving ...
3
votes
5answers
7k views

Arduino communicating back and forth with PHP server

I am researching to find the best method to work with in order to control the arduino from a web interface (hosted on a web server using PHP) and also sending data from arduino to webserver and save ...
3
votes
2answers
3k views

PHP/My SQL Database -> to Arduino Serial Monitor

I'm using this domain http://www.decathlon.commonarchitecture.ca/ to host my phpmyadmin database and php code. I would like to read a specific column of the database in the serial monitor, displaying ...
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
2answers
2k views

Wired IoT sensor network with PoE?

Objective: Maybe I'm a bad Googler, but I am finding very little on wired Internet of Things sensor networks using Arduino. Project Goals: Arduino based sensor nodes that connect to the local ...
3
votes
1answer
67 views

Read information from Twitch's API and execute actions depending on the output

i'm trying to create a display that notifies me when someone goes live on twitch. I need to acess the API and check if the 'stream' object is null or not. Then, perform an action depending on this. ...
3
votes
1answer
1k views

USB mouse/keyboard passthrough feasible?

I'm looking to achieve the following: USB HID Mouse (or Keyboard) -> [ Arduino device ] -> PC | `-> Internet ...
3
votes
1answer
3k views

What are the parameters of the browseUrl() callback in the Ethercard library?

I'm reading a code that uses Arduino as a webclient and when he tries to catch the info from the site, he uses a callback with the following parameters: static void response_callback (byte status, ...
2
votes
2answers
863 views

Remotely uploading code to an Arduino board over the internet [closed]

I recently used Particle Photon that allows me to upload firmware (.bin file) remotely over the internet. I would like to use something like this for my Arduino but I cannot find anything like that. ...
2
votes
1answer
445 views

Using c_str() on String for IPAddress with NTPClient provides wrong values

Libraries NTPClient Board Olimex ESP32-POE board Behaviour I have written a code that connects the board to a local NTP Server (which is an embedded board). I tried assigning the IP Address of ...
2
votes
2answers
2k views

Is it possible to read VGA with an arduino

In this forum thread on arduino.cc http://forum.arduino.cc/index.php?topic=107375.0 they talk about it not being possible to get 800 x 600 video in color with the arduino. My case is a bit different: ...
2
votes
1answer
1k views

Arduino two Ethernet shields

Is it possible to connect two Ethernet shields to arduino? And if yes, how can I distinguish them in the code?
2
votes
2answers
4k views

Compilation Error: “cannot declare 'client' to be of abstract type 'Client'”

I know, it isn't my original code, but I'm using this for a larger project that I am currently working on. I keep getting this error message: "cannot declare 'client' to be of abstract type 'Client'". ...
2
votes
3answers
1k 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
2answers
515 views

Arduino hangs after less than a minute, but not on USB

I have arduino uno + ethernet shield + 9V/200mA adapter. I am trying to send some data with HTTP connection. When it's connected to USB it works perfectly, but when I plugged out USB, hangs (after ...
2
votes
3answers
1k views

Using Browser window to display sensor values in realtime [closed]

The title pretty much says it all: What would be the most obvious way to setup the Arduino (shields?), the Sketch (libraries?) and PC (webserver, ajax, plain html?) so that I get the following system ...
2
votes
4answers
331 views

Arduino Accessing a web page

Folks, I want to use my arduino with ethernet shield to access the following webpage "http://www.met.ie/forecasts/sea-area.asp" and take some information. On the website it has a line "Small Craft ...
2
votes
2answers
10k views

Connecting ethernet shield to computer

What configuration settings do I need to change on my computer to use the ethernet shield mounted on my Arduino UNO as I don't want to connect the ethernet shield to the router?
2
votes
1answer
685 views

Saving byte array in PROGMEM instead of SRAM

For an ethernet project I do, I need to store the Ethernet Shield's MAC address. I store it like that: byte mac[] = { 0x90, 0xA2, 0xDA, 0x0F, 0xE1, 0x85 }; That works OK, but in my project I need ...
2
votes
1answer
2k views

Arduino Ethernet Shield: May I connect it to a PC connected to the internet via wifi?

I have an Arduino Ethernet shield. May I connect it to a machine that´s connected wirelessly to the internet in order to get the arduino into the internet? Or do I need to connect it only to a ...
2
votes
1answer
627 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
67 views

How can I make this code read a page every 10 seconds?

I got problems with the code and I have used most of today, trying to find a solution and it's starting to drive my crazy. I hope one of you guys will be able to help me out. I need the code to check ...
2
votes
1answer
635 views

How to correctly serve a webpage from an SD card

It's been days that I'm trying to figure it out how to edit this perfectly working code in order to load load a webpage from the sd card. #include <SPI.h> #include <Ethernet2.h> byte mac[]...
2
votes
2answers
316 views

Trouble reading LM35 with long (?) Ethernet connection

I have a quick question to ask. I have an Arduino Uno reading 4 temperature sensors (LM35) in 4 different rooms. What happens is that the two nearest rooms give stable values, while the two further ...
2
votes
1answer
535 views

HTTP Post not working

I am wanting to POST some data from Arduino to WebService (written in .NET), intending to save some temperature data to MS SQL Server. My code in arduino is: void PostarDados(String dados, String ...
2
votes
1answer
72 views

Informations lost in a string

At first, I sorry if I make some English faults but I'm French. So, I'm making a connection between a client and an Arduino Uno. I receive all data that I need but when I send a response to my ...
2
votes
1answer
320 views

Client.connect galileo gen2 not working

I'm having a problem with the intel galileo gen2 ethernet. I am trying to get a webpage, but I can only connect to the ethernet, not the webpage. I get this in the Serial monitor: My code: /* Web ...
2
votes
1answer
1k views

Control servo motors with buttons and via web application

I have this assignment and I have been tinkering a long time about it. I need to make a simulation of a parking lot where servos would represent the ramps. I will be using 2 Arduinos running the same ...
2
votes
1answer
3k views

Using ethernet, how do I navigate to a page on my local server

I want to access the following page on my local using my Arduino with ethernet shield" 192.168.1.2/zombie/arduino.php. My arduino is conencted to a PC through a router. The system keeps timing out ...
2
votes
0answers
443 views

Slow response from ENC28J60

I am making a circuit which turns a LED on and off through internet. I am connecting an Arduino to a LED and to an Ethernet controller(ENC28J60), but when I make a GET request to the device, it takes ...
2
votes
1answer
866 views

Control Arduino through ethernet. How to contact from outside network and securely

I'm new to Arduino so please bear with me if my question is too simple or broad (I did try and research it) or guide me if it belongs elsewhere (networking forum?) I would like to be able to control ...
2
votes
0answers
169 views

Uno Ethernet shield and TMP36 reading

I am just getting started with my Uno via the Vilros Ultimate Starter Kit. I've done all of the sample circuits and played around with a few other things. Today I connected the Ethernet shield with ...
2
votes
0answers
4k 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. ...
1
vote
2answers
720 views

Can a 9V battery be used as a backup power supply (to Arduino Uno) while plugged directly into Vin and ground?

Sorry if this has been asked before, but I've read tons of threads and it seems the answer is only implied on a couple of occasions. I'm an electrical noob, but I understand that a 9v battery ...
1
vote
3answers
7k views

Arduino Mega - get mac adress

I am new on Arduino, and I am trying to use the Ethernet shield... but it need: IP adress MAC adress IP adress is easy to get... but not MAC.. how can I get my arduino MAC adress?
1
vote
2answers
169 views

TCP connection CPU usage, multiple signals?

I'm connecting a client (java program) to an arduino (server). What I want to know is, how high the CPU usage is, and what to do if there are no clients that are trying to connect to arduino? Should I ...