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Questions tagged [ethernet]

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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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If I telnet to an Ethernet capable Arduino (e.g. shield, Leonardo, Leonardo Eth) with something like telnet [ip] [port] and then do nothing, the connection hangs. Seemingly for ever, or at least ...
Paul Uszak's user avatar
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Let's assume we have an Arduino Leonardo Eth running some sort of networking application, perhaps a very simple web server. Importantly the server is read only and static HTML. There is no ability to ...
Paul Uszak's user avatar
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I am making a simulator box that pretends to be an industrial pump. We make equipment that interfaces with the pump and don't always have a pump available to test the connection. I used and arduino ...
vini_i's user avatar
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I have a SAMD51P20 based Arduino PLC with WIZnet W5500 based Ethernet shield. I'm using these libraries: #include <Ethernet.h> #include <MQTT.h> #include <ArduinoModbus.h> MQTT and ...
Paul Jurczak's user avatar
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I'm using Ethernet module ENC28J60 with ESP32 on Arduino IDE. I could establish a secure connection using WifiClientSecure.h here code #include <Arduino.h> #include <WiFi.h> #include <...
Just doin Gods work's user avatar
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I'm working on a project on which I need to have multiple EthernetClient connections to different servers. All of these connections must be kept alive simultaneously and by this I mean I cannot stop ...
Mazaetos's user avatar
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I'm having issues connecting to my arduino mega via ethernet. Its a very basic start to the code just to get the network side up and running, them im going to add in what I actually want it to do. For ...
Isaac M's user avatar
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I have a program that only do get and post to a controller via an ethernet port. My problem is that after a certain amount of loop in the program, i got this error: Guru Meditation Error: Core 1 ...
Martin Chicoine's user avatar
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I wish to create a rudimentary ethernet in/out - switch/hub where I can (sort of) daisy chain my boards. (I don't wish to use a ethernet switch/router/hub) One port would be acting as server The ...
Ohbhatt's user avatar
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I have Arduino MEGA with Ethernet Shield and a SD card connected to a RUT950 GSM router. Then, I also have two sensors connected to the router and they run a TCP server that sends measurements ...
Marcus Barnet's user avatar
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I've been playing around with several Arduino ethernet modules based on the ENC28J60 and the W5500 chipset. All modules are advertised as 10/100M, but in reality only work when the port of a switch is ...
Joe's user avatar
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I'm trying to get an ethernet module with the W5500 chipset to connect to my network on an Arduino Uno, but whatever I do, I always get an incorrect IP address. The module is connected as default SPI, ...
Deekay's user avatar
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I have an application on a PC that sends 10 UDP packets to an Arduino Portenta board. When sending packets with no delay, half of them are lost. Wireshark shows the packets are correctly sent by the ...
Simon's user avatar
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I am using ENC28J60 and EthernetENC library to connect an Arduino UNO with ATmega328 to the network. Everything works fine within the local network, but outside of it, I cannot ping the device. What ...
ArgusLibovski's user avatar
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I was trying to learn how to use UDP protocol to use in my automation project to send commands to an Arduino Due on ethernet with an ENC28J60 breakout board which I have connected to the Due from SPI ...
Jupiterian's user avatar
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I have an Arduino Mega with Ethernet connected to a router by cable. Also I have a PC connected to the router (by Wifi) where also the local MQTT broker is installed (mosquitto). Althought the Arduino ...
bardulia's user avatar
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I am using Controllino Maxi. It has an Arduino Uno inside it. I am trying to control the PWM pin D0 and digital pin R0 via python code. Below is the code I have upload on arduino: Arduino Code: #...
S Andrew's user avatar
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I need to connect 2 PLC which have Ethernet interfaces over 1 km and i was thinking of connecting via SPI an ethernet shield and an SX1278 module to a arduino nano (UNO) board. Do i need logical ...
Stefan Neamtu's user avatar
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Does anyone know if the following is possible? Any advice would be much appreciated. I am programming an Ethernet connected Arduino to be a webserver. What would be ideal is a small portable "...
MrExplore's user avatar
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I'm having issues stacking shields on my Arduino Mega 2560. I would like to add to the mega a ethernet shield (https://store.arduino.cc/products/arduino-ethernet-shield-2) and on top of that the ...
Ayayron's user avatar
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Hello i have a custom board of the RP2040 and would like to use the ethernet library. But the ethernet example webClient uses the default SPI pins of whatever board it is being used, but what if im ...
DrakeJest's user avatar
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I have a keyestudio board identical to the arduino mega 2560. I use the matching keyestudio ks0156 W5100 ethernet shield. My code uses the following library for ethernet paulstoffregen/[email protected]...
Yanick Salzmann's user avatar
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Scenario I'm writing a code for Nucleo-144 F429ZI. It receives UDP packets (actually OSC bundles) and send back an answer when the command is completed. Issues It work fine most of the time. But there ...
Mark's user avatar
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I am making a haptic feedback glove using Arduino and HC-05 bluetooth module to communicate with PC. There are rotary encoders on the finger which send value to PC through Arduino mega. The PC returns ...
cakh's user avatar
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I'm trying to make a simple GET request to a server (which has a static IP but does not have a name). I'm using EtherCard library and a cheap ENC28J60 Ethernet Module. The basic configurations are OK (...
user2959923's user avatar
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I am trying to communicate with PC by using modbus TCP communicate. When I use this code I can't communicate. Dou you know guys what is the problem? My ethernet Module is working I know that because I ...
A Alptekin's user avatar
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I am attempting to write a file found on an SD card to a connected Ethernet client. The file opens fine, and we have no problems writing to the client. For testing purposes I also write the lines read ...
JackOfAllTrades99's user avatar
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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 ...
Rebeliok's user avatar
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How can I connect and send data between two Arduinos using ENC28J60 ethernet adapters on both of them? Is there any guide or example code for me to take a look from or any library I can use to achieve ...
rohithrathod banoth's user avatar
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I've mounted an Ethernet Shield on top of an Arduino UNO. The Arduino is connected via usb to my pc and to the network via ethernet through a switch. I'm running a simplified verison of the WebServer ...
Hexash's user avatar
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I would like to begin to understand ethernet handshakes by integrating an Ethernet over USB protocol within an arduino mega or nano. Is there something about the ethernet protocol that requires more ...
steve antwan's user avatar
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I have asked this question on the arduino forum as well. I have used SMTP before using client.print (and client.println) but I am now trying to move as much text as I can from RAM to SD (and so I need ...
elscan's user avatar
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So basically I'm working on a project that uses an Atmega328 like on the Arduino Uno. I need to receive both DMX (with max485) and E131 (Not both at the same time, I'll decide which with a boolean in ...
Randomaker's user avatar
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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 ...
noobiejp's user avatar
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Using a socket server on a Teensy 4.1, I am sending and receiving data in a loop from a Windows socket client (WinForms C#.NET). I am sending or receiving 530 bytes of data. In each direction, it ...
Joe's user avatar
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I'm currently in a planning phase for a project. I want to read some sensor data over Modbus TCP, do some simple calculations on the Arduino and publish the results over MQTT. Which means I have 2 RJ-...
Jakube's user avatar
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I have this project where I need a modbus tcp server that will host a series of sensor data for other modbus client devices to read. I use this Library by Andresoarmento This is the code i am using ...
Deadpool's user avatar
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I connected corresponding pins of Arduino Nano and the Ethernet Shield, connected my computer to a router (the light indicated the connection) and Ethernet Shield to the same router. Nevertheless, ...
silencefog's user avatar
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I have an Arduino sketch that serves an HTML web page using the standard Ethernet library (https://github.com/arduino-libraries/Ethernet) and the Ethernet Web Server library (https://github.com/khoih-...
prenone's user avatar
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2 votes
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Arduino Yun is set to receive UDP packets. It receives those data with some gibberish. How is all set up: Arduino Yun (acts as a server) is connected through Ethernet to a PC which is (through WiFi) ...
BrainTrance's user avatar
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I want to connect a W5500 ethernet Module and an SD card module to arduino Uno using SPI (with different CS pins of course). When connected separately they work fine but when connected in the same ...
Zaffresky's user avatar
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I'm trying to stack up Arduino UNO, Ethernet Shield and Waveshare 2.8" TFT Shield. Since I'm new to this I'm mostly doing basic stuff. I successfully manage to get ethernet shield and TFT shield to ...
bennygenel's user avatar
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Im working on a sketch that needs to display some internal variable values and analogue reads in a simple webpage. The only catch is that it needs to be as reliable as possible. Im getting some odd ...
BruceJohnJennerLawso's user avatar
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Using STM32Duino on Nucleo F429ZI: #include <LwIP.h> #include <STM32Ethernet.h> #define UDP_TX_PACKET_MAX_SIZE 512 #include <EthernetUdp.h> IPAddress remoteIP; unsigned int ...
Mark's user avatar
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i am trying to parse a page from the route by using Arduino + Ethernet shield. before Arduino testing. I tested my code via python as it shows below. from this code i can get the data as i wish where ...
LinkCoder's user avatar
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Using the WebServer example file I have been able to confirm that my arduino is connected to my local network and I can open the page in my browser. However any attempt at contacting addresses outside ...
Simon V.'s user avatar
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I'm using an arduino UNO with ethernet shield. When following a few guides online for a school project I came across this issue. First code sample: #include <SPI.h> #include <...
Simon V.'s user avatar
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I have been looking for a library that can execute an ARP (Address Resolution Protocol) command to return a list of connected devices on the network. The idea is that it would send the request to the ...
tshimkus's user avatar
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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(...
Mark's user avatar
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I am trying to make a connection with the EthernetClient, but it always fails with code 0. I decided to write a small code just to test if the client ever becomes ready, and as I suspected it does not....
Lucas Noetzold's user avatar
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