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.
286
questions
0
votes
1answer
7k 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 ...
0
votes
0answers
30 views
Arduino LAN/TP tester at some frequency
I have the notion of putting together a TP cable tester with an arduino. I've seen hacks sending power and lighting up a LED to check continuity, and used a similar 'professional' tester that just ...
0
votes
1answer
31 views
MQTT on nano with Ethernet shield not working
I'm using an arduino nano with an ethernet shield (ENC28J60), and ethernet eem to be working (I can create a webserver with Ethercard library).However, i'm stuck when i try to connect to a MQTT ...
0
votes
0answers
17 views
detect a dropped tcp connection
Is it possible to detect a dropped connection using WiFi server?
Example:
Windows disables the Ethernet connection to the ESP during an active connection.
After re enabling the connection it is not ...
0
votes
0answers
40 views
ethernet module works with uno, but not with nano
I use etherCard Library with ENC28J60-EDC8J60 ethernet module
When plugging the "backSoon" example into an arduino UNO, everything works fine, but when i plug it into a nano, as seen in some tutorial ...
0
votes
1answer
14 views
command keeps echoing because web page tries refreshing
I want to execute a action only once when I press web page button but as the page tries refreshing the action gets executed in a loop.
I am using the wifimanualwebserver example for esp8266.
Please ...
0
votes
0answers
15 views
connection to ESP using pyVisa
I'm building a small LXI device using a the OLIMEX ESP32 POE Board.
Sending commands to the device using pyVisa works fine, but queries don't.
Only the IDN? query works.
From the ESP I get the ...
0
votes
0answers
45 views
controllino and modbus tcp protocol
i have to make a network made of a master (made with controllino) and a slaves (also made with controllino) and they can comunicate with the modbus tcp protocol, i know that controllino works like a ...
0
votes
0answers
20 views
Ethernet.h Ethernet.Begin(mac) only connects if i have a LiquidCrystal object from LiquidCrystal.H
I have the following code;
#include <Ethernet.h>
#include <SPI.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(31, 30, 29, 28, 27, 26, 25, 24, 23, 22);
byte mac[] = { 0xDE, 0xAD, ...
0
votes
0answers
171 views
Read SNMP OID values with Arduino
I wish to read SNMP predefined OID values from other devices, can it be done with Arduino?
I searched all over the internet for the past 2 weeks about Arduino with SNMP and found a lot of great ...
0
votes
4answers
2k views
Arduino Micro + W5500 module from AliExpress
Got this module from Aliexpress
W5500 Ethernet Network Modules For Arduino TCP/IP 51/STM32 SPI Interface 3.3V 5V I/O MCU
... and trying to hook this up to my proto Aduino Micro as thus:
Micro -> ...
1
vote
1answer
118 views
Arduino HTTP Request Fails Slow Cellular Connection
Setup:
Arduino Mega 2560 w/ Wiznet W5500 Ethernet Sheild
Using TP-Link TL-MR6400 LTE router to connect to internet over cellular connection in Uganda.
Using an HTTP Post with the following,
...
0
votes
0answers
74 views
Ethernet TCP communication between two arduinos not working
So I've got two arduinos Leonardo ETH, both plugged into a local network I host on my computer, and I'm trying to make them communicate through ethernet.
One of my arduinos is collecting data from 2 ...
1
vote
1answer
80 views
Limitations of connecting to many Arduinos via Ethernet?
I'm planning a project where I need to control a lot of Arduino Unos from a single PC. I'll need to send commands to the Arduinos and receive responses, as well as have the ability to update each ...
0
votes
1answer
96 views
Nano & Ethernet will not write to PushingBox on a workplace network (but will at home)
I have a Nano+ENC28J60 and I'm using Pushingbox which I have setup to write data to a GoogleDrive spreadsheet which works perfectly at home. However when I take it to my workplace it no longer works.
...
0
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0answers
40 views
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 ...
0
votes
3answers
5k views
Posting Arduino data via ethernet to PHP server problems
I am currently having difficulties sending data from an Arduino using an ethernet shield to a PHP database in MySQL. My problem is that it appears that the server is receiving the data as there is a ...
5
votes
1answer
270 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(). ...
2
votes
1answer
486 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 ...
1
vote
2answers
3k views
Simple webpage serve with Arduino ethernet shield on SD card
I have been experiment with the arduino uno board from few days but can't seem to make it serve web page stored in SD card of ethernet shield.
If I print the contents of the file to serial it works ...
0
votes
0answers
22 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 ...
0
votes
1answer
118 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. ...
0
votes
0answers
112 views
Ethernet Shield Issue
I just bought a Ethernet Shield for my Arduino UNO. I connected it to my arduino and flashed the Example code for Ethernet Shield, but the code didn't work. The COLL LED on ethernet shield is glowing ...
1
vote
0answers
241 views
Arduino nano (clone) with ethernet shield only works when I open up serial monitor
#include <EtherCard.h>
static byte mymac[] = { 0x7A,0x69,0x69,0x2D,0x30,0x31 };
byte Ethernet::buffer[500];
static uint32_t timer;
const char website[] PROGMEM = "x0201g2.cloudapp.net";
...
0
votes
1answer
27 views
one Arduino with RS485 and Ethernet shields: does this work?
I'm planning to wire a few Arduinos together via RS485, and have one of them act as a hub that collects information from the others and presents it via http on an Ethernet connection.
For instance ...
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'".
...
0
votes
2answers
2k views
Unable to configure Ethernet using Arduino Uno R3
I have purchased an Arduino Uno R3 board and a LAN shield from these locations:
Arduino UNO R3
Arduino LAN shield
I am trying to configure Ethernet using this sketch:
#include <SPI.h>
#...
0
votes
1answer
29 views
My webswerver works fine when there is only 1 servo used/defined in my code
I am trying to make a webserver which controls my 3 servos for a robotic arm. When I define and use 1 servo it is nice and quick, but whereas if I use more than 1 the webserver is very slow and barely ...
0
votes
1answer
108 views
Public IP for Arduino with Ethernet shield and Arduino Uno
I'm new Arduino and I would like you to help me. I would like to have a public IP so that anyone can get access to it, not only from domestic domain. What could I do?. I'm using Arduino Uno, Arduino ...
1
vote
0answers
195 views
Web Page doesn't load when data is being received from Xbee
I have an Arduino Mega I am using as a simple web server. Right now the web page is two simple lines of text. There is an XBee radio attached to the unit to receive data from another unit. However, ...
1
vote
0answers
906 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,...
0
votes
0answers
199 views
How to create a Arduino socket server to receive messages
From linux I can send a socket message using netcat
echo "Hello" | nc 88.109.110.161 100
But I don't know how to setup the socket server for listening incoming messages using the ethernet shield.
...
0
votes
0answers
2k 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:
#...
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. ...
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 ...
1
vote
0answers
80 views
UDP behavior different for STM32
I'm facing a weird situation, where the UDP behavior seems different in STM32 porting (stm32duino).
Short question
Besides port and address, what are the other parameters that characterize the UDP ...
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 ...
0
votes
1answer
485 views
Arduino connection with the server failed
I am trying to connect arduino uno and ethernet shield and try to send some data to an asp.net web api application. When i upload the sketch, i get in the serial monitor connection failed.
I don't ...
0
votes
2answers
2k views
W5100 Ethernet Shield to Custom Board Problem
I've been using an Arduino Ethernet shield and an Arduino Mega in my project, but now I'm trying to migrate all the components onto my own PCB. My board uses a W5100 same as the Arduino, but nothing ...
0
votes
0answers
55 views
Arduino with Ethernet Shield with PC to upload data to Microsoft Azure
i am a student doing a project related to datalogging. My project is a rehabilitation device that uses 2 rotary encoders to record data for rotation and linear movement of a human arm. The data ...
0
votes
0answers
92 views
Can't parse large json file
For a project I've to parse a big json file. Unfortunately it does not work as expected.
Here is the json file:
{
"data1": "...
0
votes
1answer
127 views
Mini ethernet shield pins don't have SI
Please somebody who had the same issue help me.
The question is how to connect this Mini Ethernet shield to an Arduino.
The main problem is the pins that my shield have or haven't; my current ...
0
votes
0answers
59 views
STM32F103C8 reset button not working
I am working project, using STM32F103C8T6 and W5500 Ethernet module. My project is something like network relay. My problem is that the STM32F103 can not boot up after pressing reset button when the ...
0
votes
1answer
65 views
Send files via network [duplicate]
I want to send a file from an Arduino to the server or another Arduino.
I wrote a code that's open the file then write the content of the text on an array and then send it.
That would work if the ...
0
votes
0answers
65 views
Sending .wav via network
I'm working in a project and part of this project is sending a .wav file from an Arduino to other device (for example anther Arduino).
I already am able to send a .txt file from an SD which was ...
0
votes
3answers
537 views
Arduino for delivering a WoL signal over ethernet, when receiving a specific command over WiFi
I'd like to assemble a device that could accomplish the following:
Connect to my home wifi (WPA2-Personal)
Connect to my home PC with via Ethernet cable
Able to send WoL signal to the PC when getting ...
-1
votes
2answers
1k views
Get image from Arduino Ethernet Shield sd card
I have a code that uploads the temperature and humidity from a dht22 to a website.
Now i want to add an image to the "add to homescreen" button in safari on ios.
Apple has a html code for this:
&...
0
votes
0answers
23 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 ...
0
votes
0answers
229 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 ...
2
votes
2answers
342 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 ...
