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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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37 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 ...
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1answer
34 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 ...
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1answer
53 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. ...
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1answer
22 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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2answers
114 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 ...
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1answer
28 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 ...
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1answer
65 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 ...
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2answers
141 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 ...
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1answer
27 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 ...
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0answers
65 views

Arduino hangs when sending data using UDP

I am trying to use the W5500 ethernet chip with the Arduino to send some stuff over UDP, but my program hangs when I call Udp.endPacket(). The library in question is here: https://github.com/sstaub/...
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38 views

Sufficiency of Arduino UNO to receive sound via Internet

I'm really beginner for arduino. To learn, I've taken my first project using it. In my project, I will connect to a online radio station with IP:port. Then, I will send the received data(music) to the ...
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2answers
230 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 ...
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0answers
30 views

Proxy/Controller for Arduino

I was making a small app with an arduino shield and a restful API library. For what I need it works great but the only problem I'm having is simultaneous connections, with more than one connection to ...
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0answers
46 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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2answers
89 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 ...
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0answers
495 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 ...
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0answers
19 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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1answer
37 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 ...
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0answers
59 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 ...
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0answers
23 views

Wired ethernet udp connection between laptop and end device

I currently have a laptop and end device with an ethernet cable between them, running on udp protocol. I would like to change the cable into a wireless connection. In my setup I have an iBoard Ex ...
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0answers
129 views

Ethercard SD and DHT11

I want to build a web page on an ATmega328 that will link me to an SD card file with the saved values of a DHT11 sensor. I manage to program the "Web Server" on the atmega328 and the code that creates ...
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1answer
88 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....
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2answers
582 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, ...
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1answer
56 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 ...
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1answer
164 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 ...
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0answers
1k 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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1answer
123 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 ...
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0answers
33 views

Arduino stops responding to http requests after some time and “awakes” by turning on port monitor

Arduino stops responding to http requests, sometimes it's takes only 1 - 2 minutes and sometimes it's working fine for hours. Turning on port monitor "awakes" ethernet and it continue to work. Arduino ...
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1answer
244 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 > ...
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1answer
2k 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 ...
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2answers
272 views

How to get a character from a serial Parsed http response? [closed]

I am a web developer and I am struggling with C code on Arduino. So this is What I have: I have a backend written on PHP that returns a 0 or 1 depending of wether a pin should be high or low. I have ...
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1answer
835 views

Send HTTP request from Arduino Ethernet to server on PC

I am simply trying to send a simple HTTP request from an Arduino Uno with w5500 Ethernet Shield to a local server running on my PC. The two are connected via a crossover ethernet cable and I am able ...
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0answers
93 views

Arduino Ethernet: 20hz datastream over TCP?

I have a computer sending OSC data (udp) to 5 Arduinos with Ethernet shields (libraries: OSC, Ethernet2). Data packages are ~6 integers long and get sent every ~50ms. The ethernet cables are 150feet/...
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3answers
996 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 -> ...
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1answer
250 views

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 ...
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1answer
269 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 ...
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1answer
164 views

Transfer byte-buffer with ENC28J60

How do I transfer a series of byte[256]-buffers to a server with an ENC28J60 Ethernet adapter? I get blocks of uint8_t from an Arducam camera module and I'd like to transfer them to a host. Does ...
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0answers
83 views

Uploading Streamed data blockwise with Ethercard UDP

I'd like to upload big data chunks (512kb - 2mb) via udp to a server. The data comes from an i2c-source. Here is my code: #include <Arduino.h> #include <Wire.h> #include <EtherCard.h&...
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1answer
228 views

RFID does not respond after Ethernet.begin(mac, ip) initialization

Good day, I have this problem with my simple project. I have a database with all RFID number of employee. What I want to do is to use an rfID to check if it is registered in the database. If it is, it ...
6
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3answers
375 views

Multiple SPI device

I want to connect Ethernet board (W5100 HR911105A) to Arduino Leonardo with SPI and I also want to connect SD reader. When I test these boards separately everything working. But when I connect them ...
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0answers
148 views

LED Webserver control not working

I've got an Arduino Uno and Ethernet shield, trying to test it out with a simple on off switch for the on-board LED. My Code is this // FILENAME = LED2.ino // SOURCE= http://www.instructables.com/id/...
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1answer
253 views

Arduino Ethernet Shield 2: How can I automatically determine the MAC Address?

I'm using an Arduino Mega. I know that Ethernet Shield 2's come with a sticker with the MAC Address printed on it. This would imply to me that this address is hardcoded into the shield. Is there any ...
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1answer
939 views

is there a timeout for Ethernet.begin?

I'm working on a project, but just for testing, I haven't connected it to the internet yet, even though the code SHOULD be ready to roll out. When trying to test some of my code with the serial ...
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1answer
54 views

Lifespan of a hot microchip [closed]

I'm currently building my own Home Automation System with a bunch of Arduinos and Relais, all of them wired to Ethernet "Shields". The casing I am printing on a 3D printer. The Arduinos work great ...
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1answer
2k views

My Arduino Ethernet shield is not working

Actually I'm using a W5100 Hanrun HR911105A 16/02 Ethernet shield with an Arduino Uno (original). I tried this code from the examples: #include <SPI.h> #include <Ethernet.h> // Enter a ...
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1answer
593 views

How to read response from server using an Ethernet shield?

I want to control a relay by reading values from MySQL. I'm using an Arduino and an Ethernet shield. So far, I can get the response from server and get the value. I just need the value 10110110, but I ...
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1answer
329 views

Arduino Ethernet shield cannot establish connection

I bought a Chipdot Ethernet shield from Amazon. It does not have any MAC address on it. I connected this shield to an Arduino Uno. I tried to run the DHCPAdressPrinter code from Ethernet library on it,...
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2answers
1k views

Is Arduino Ethernet shield compatible with arduino due?

Arduino Due's operating voltage is 3.3 volt and Ethernet shield operates on 5 volt supply. So my question is that this Ethernet shield will work on an Arduino Due and also if it will not harm the ...
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2answers
2k views

PHP/My SQL Database -> to Arduino Serial Monitor

I'm using this domain http://www.decathlon.commonarchitecture.ca/ to host my phpmyadmin database and php code. I would like to read a specific column of the database in the serial monitor, displaying ...
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0answers
133 views

Troubleshoot establish network connection; WireShark

I have an Arduino UNO with the WIZ5100 EthernetShield. I have uploaded the example script DhcpAddressPrinter, after another sketch using the EthernetShield did not connect to the network as expected, ...