Arduino Stack Exchange
Arduino Stack Exchange

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.

Ethernet can be used for communication between an Arduino and a computer. It is defined as a system for connecting a number of computer systems to form a local area network, with protocols to control the passing of information and to avoid simultaneous transmission by two or more systems

There is also an Arduino Ethernet board, for which you should use the tag .

Additionally, there is an Arduino Ethernet Shield. Use this tag for the shield.

https://arduino.cc/en/Main/ArduinoEthernetShield

309 questions
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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 }; Ethernet.begin(mac,ip); This works with my old…
Arthur
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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. The address to the API is…
Pedro Fracassi
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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 I am using the following code: #include…
Hoytman
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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?
Windys
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Leading Zeroes on Arduino Ethernet MAC Address

How can I pass the MAC address to Ethernet shield with leading zeroes? I change the default MAC address from DEADBEEFFEED to something like DEADBEEFFE01. So I only change the last number from 0xED to 0x01. My board is communicating to a separate…
noobiejp
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Best way to process data received by EthernetServer

I have a program where the Arduino acts as an Ethernet Server. The client continuously sends packets which is of the following format Start Byte=0x7E; Some Data/Command Bytes; //Can be of varying length End Byte=0x7A; Some packets take more…
SteveIrwin
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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 router?
Rosamunda
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EthernetClient: HTML table isn't being fully populated

I have the following code below for an EthernetClient named client. It is supposed to print a 2 row, 9 column table. The headers are ID and Name and are the first cell in each row. The other columns are the associated data. The problem I am having…
tpm900
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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 Warning"- This is always either "In Operation" or…
Omasín
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Using Browser window to display sensor values in realtime

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 working: I open some page in a browser. The page…
heltonbiker
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error C1083: Cannot open include file: 'Ethernet.h':

i'm trying to compile native code in VC++ using galileo sdk for windows iot. I've copied Ethernet.h file to the include directory of D:\galileo-sdk-develop\galileo-sdk-develop\source> but still getting error on cannot open include file…
Deena
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Set the timeout - Ethernet Shield library

Does anyone know if you can set the time for the timeout Ethernet Shield library? Let me explain: I created a very simple function (below) that attempts to connect to an address if it is not accessible returns 0 if it is available returns 1. Problem…
Renato Tavares
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Arduino web server-how to get values form URL

I’ve already searched through the internet but cannot find satisfactory answer. Is there an easy way to get value of variable passed through an URL? What I mean is I want to start a web server on my Arduino then call the URL like…
Rebeliok
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Using USB or ethernet to carry digital signals

I need to send six digital signals about 4 feet through wires. An ethernet cable has 8 little wires that should do the trick. I could split the ends and solder them to my boards. Is there an adaptor that will let me plug in the ethernet cable cable…
Walrus the Cat
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Grounding issues Arduino Ethernet Shield makes WS2811 LEDs flicker

I have an Arduino Due with an Arduino Ethernet Shield V2 that I use to control multiple daisy-chained WS2811 LED strips. When I turn on most of the LEDs the Arduino and attached wires seem to become an antenna, picking up fluctuations that make the…
evsc
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