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.
283
questions
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0answers
35 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
13 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
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0answers
11 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
39 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
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0answers
17 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
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0answers
57 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 ...
0
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0answers
38 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
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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 ...
1
vote
1answer
115 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 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 ...
0
votes
1answer
24 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 ...
0
votes
1answer
75 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 ...
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
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0answers
146 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.
...
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0answers
73 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 ...
0
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0answers
50 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
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0answers
88 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": "...
1
vote
1answer
77 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
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0answers
50 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
0answers
159 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
1answer
119 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
1answer
51 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
62 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
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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
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0answers
210 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
915 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. ...
0
votes
1answer
53 views
WSO2 IoTS : No Data shown on Server by Arduino connected via Ethernet
Description:
While enrolling Arduino device on WSO2 IoT server, I made necessary(WiFi to Ethernet connection) changes in the sketch that I downloaded from the server and uploaded it. The following ...
2
votes
1answer
456 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 ...
0
votes
1answer
94 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
votes
1answer
114 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
2answers
2k views
Modbus IP with Simply Modbus TCP
include SPI.h
include Ethernet.h
include Modbus.h
include ModbusIP.h
//Modbus Registers Offsets (0-9999)
const int SENSOR_IREG = 100;
//Used Pins
const int sensorPin = A0;
//ModbusIP object
ModbusIP ...
0
votes
1answer
161 views
How to flash an ATMEGA2560 using a WIZnet 5500?
I am wondering if anyone has ever flashed a ATMEGA2560 utilizing a WIZnet 5500? I have looked at this bootloader package but it only supports the 5100. I may have to do it myself but am a little ...
0
votes
1answer
1k views
Using AysncUDPMessage for ESP32 to send string data
I am in search for some examples as to how can one use the AsyncUDPMessage in an Application for sending out UDP packets to a host with specific IP address and Port number from an ESP-WROOM-32 (Olimex ...
0
votes
2answers
4k views
Ethernet nodemcu
I have a question that might be a #noob question but I am wondering if there is a board similar to the nodemcu in size that runs arduino code but instead can use ethernet to connect to the network ...
0
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1answer
34 views
Ethernet socket impedes adding shields
I just bought a KEYESTUDIO W5500 Ethernet Arduino without realizing that the Ethernet socket on the board impedes adding any additional shields to the device because:
Horizontally the socket runs ...
0
votes
2answers
1k views
How to store an RFID tag number in a string
I want to send RFID tag number to PHP page. So far I have sent a fixed string to php and it worked, now I am not getting data in string when i scan rfid tag. I want to store every RFID tag number in a ...
0
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0answers
85 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 ...
0
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2answers
194 views
if two arduinos are connected by I2C and one of them is using an ethernet shield, does that grant both of them access to the internet?
i have two arduino mega and they send data to each other by an I2C connection. But one of those arduinos is connected to an ethernet shield which allows it to send data to a web server. Being both ...
1
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0answers
1k views
Sending data from webserver to Arduino
Hello Arduino enthusiasts! I've been working on a keypad lock system for school lately and I need some advice.Basically, my code checks if the entered passcode is the same than a predefined passcode ...
0
votes
0answers
32 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 ...
0
votes
1answer
84 views
Uno R3 connected via Ethernet shield becomes unreachable after a few minutes
I'm setting up an Elegoo Uno R3 with a Seeed 5200 ethernet shield to monitor water flow and temperature. It needs to run unattended for weeks at time (being called several times a day by a remote ...
0
votes
0answers
136 views
Cannot connect to database Ethernet Shield
I am using an LDR sensor to store its readings into the database. My code is as follows:
#include <SPI.h>
#include <Ethernet.h>
const int ledPin = 13; //the number of the LED pin
...
0
votes
1answer
187 views
Peer to Peer using Ethernet Module
I'm beginner here at arduino stuff. i just started learning arduino and i have this small homework where i NEEDED to connect 2 arduino using ethernet shield or module ONLY over a distance of 20 meters....
5
votes
2answers
614 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, ...
-1
votes
1answer
66 views
Ethernet connection - how to send data from interrupt
I have question similar to old topic here Any way to pass EthernetClient to function outside of loop automatically?
I have in the main loop opening of the TCP server which is just maintaining the ...
0
votes
1answer
423 views
Preventing relay switch-off crashing Ethernet controller
I have an Arduino Uno with Ethernet Shield controlling some relays. Initially everything works fine but then when switching the relay off, the Ethernet controller frequently 'crashes'. Ethernet stops ...
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:
#...
0
votes
1answer
244 views
http request in time intervals
I'm doing a program that receives data from a web page every so often, but only receives the data once and then receives everything blank. I need help to receive the data every time indefinitely. I am ...
0
votes
1answer
552 views
How to connect an Arduino via an ethernet cable to a laptop directly?
Maybe a silly question, because it is a usual topic, but I have a problem with my Arduino Leonardo ETH.
I want to create a web server on the Arduino with the example sketch File > Examples > ...
1
vote
1answer
3k views
Arduino Nano + RC522 + w5500 Ethernet Module
has anyone had any experience wiring up an arduino nano with an RC522 RFID module and a W5500 ethernet module? i can get each of them to work individually, but i cannot get them to work together. i am ...
