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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Arduino Mega failing to connect to XAMPP database/php server to send HTTP requests

I have developed an application with a SunFounder Mega2560 with a W5100 Ethernet shield that acts as a server and successfully parses TCP message packets from a client sending in updates. I am now ...
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25 views

Remote Arduinos polling a master Ardrino over ethernet/wifi

I'm setting up a "Panic Button" for our Front Office. The concept is to have a master Arduino with the button and 4 other Arduinos with Strobes and/or alarms to alert the rest of the staff. The bells ...
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39 views

WebClient Not Working On Shared Network

I'm working on a school project, and I use Arduino Uno to collect some data with sensors, and then send it to an online database. The Arduino is connected to the Internet via an Ethernet Shield and an ...
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379 views

Ethernet Shield - Not Working Properly Always

I'm working on a school project and using Arduino Uno. The basic working method for the project is as follows: Read temperature from LM-35. Read CO2 level in air using MH-Z14A. Upload data to server ...
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148 views

DF Robot W5200 Ethernet Shield for an Arduino Uno not working?

I've been working on using an ethernet shield for my Arduino Uno for a couple weeks now. I've been going through the problems one by one and now realise that there seems to be nothing transmitting. ...
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157 views

Directly connect Arduino to Macbook over Ethernet

I am trying to connect my Arduino to my MacBook over ethernet via a thunderbolt-ethernet dongle. However, I am unable to access my Arduino over Ethernet. The problem is very similar to one mentioned ...
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36 views

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 ...
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3k views

get request with ENC28J60 Ethernet module

I try to make a simple http get request from Arduino uno to my website (shared hosting) where i fetch the data to db. I use the EtherCard library and ENC28J60 Ethernet module. Here is the code: #...
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1k views

Connect to Ethernet2 by hostname

I´d like to connect my Ethernet2 with WIZ550 using DHCP but instead of Local IP, I want to use Hostname. This is my code, it works. I get a Local IP Address and I can connect to Arduino using this IP,...
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837 views

Minimal ATmega328p Ethernet Configuration

What would be minimal schematic for ATMega328P in order to have communication over ethernet? So I'm not asking about attaching existing shields to existing Arduino board, but just for bare minimum of ...
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8k views

Arduino Ethernet Shield on Arduino Mega Pin Usage!

I currently have an Arduino Ethernet Shield which is Mega Compatible. I've found on the Arduino Ethernet Library https://www.arduino.cc/en/Reference/Ethernet that the Shield uses different Pins on the ...
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2k views

Udp.remoteIP() and Udp.remotePort() calls not working

I'm trying to conect an Intel Galileo over ethernet. I'm using the code located in Examples/Ethernet/UDPSendReceiveString. Everything works fine except for the response. Udp.remoteIP() always return ...
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242 views

Arduino ethernet shield error

As I mention in the title, that when I am trying to upload the code of WebServer to the Ethernet Shield it shows me an error messages. Please if any one can help me to fix it, and here is the ...
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232 views

Parsing UDP text from a Command using UDP

I want to send a parameter from my computer (i.e using Hercules software) using UDP protocol to my Arduino with Ethernet shield to turn 2 LED on and off (each of them). The command I'm using is: $A&...
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115 views

GET the first result in HTTP request

I have a String content="" and if I put an HTTP request like this: client.println("GET /api/actions?parking_id=39 HTTP/1.1"); client.println("Host: ramp-rampcontrol.rhcloud.com"); client....
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2k views

Ethernet shield reset problems

I know there are multiple threads about ethernet shields not starting properly after power up and that there are versions that don't have those problems. But which versions are okay? Which versions do ...
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104 views

Yum as eth->wlan adaptor

Is there a way to make a yun an Ethernet-wifi bridge? Applications include giving wifi to raspberry pi and other Ethernet only devices and vice versa.
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420 views

Why client.stop causes some significant delay to do another task in a loop?

void setup() { Serial.begin(9600); // Initialize serial communications with the PC // disable SD SPI pinMode(4, OUTPUT); digitalWrite(4, HIGH); // disable w5100 SPI ...

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