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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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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 ...
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2answers
453 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
1k 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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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 -> ...
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1answer
401 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
477 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
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1answer
329 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 ...
1
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1answer
388 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 ...
7
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3answers
691 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
196 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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2answers
475 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
2k 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
58 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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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'". ...
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1answer
3k 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
897 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 ...
0
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1answer
519 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
2k 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
3k 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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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
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1answer
535 views

Ethercard. Copying ip address into hisip

I've tried getting help from arduino.cc forum but they arent helping at all (more like being cryptic) i'm kinda a newb at this. And i'm seriously not getting help from there. 2 messages in 8 days from ...
5
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1answer
530 views

Uno with LCD acting strangely - power issue?

I've got a Uno (Elegoo UNO R3) running with - Ethernet shield (Kuman K15), - 4 relay board (Elegoo 4 Channel DC 5V Relay Module with Optocoupler ) - Matrix Orbital 2041 LCD connected via I2C (11mA ...
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0answers
401 views

SPI communication between two Ethernet Shields (W5100)

I am a newbie to the world of IoT, I want to ask... Is it possible to connect two Ethernet shields with SPI? And if yes, how can I codes them? I have reference from http://www.gammon.com.au/spi and ...
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2answers
2k views

How to connect arduino with local network

I am trying to connect Arduino with local network. This will act as a web server, client would be android mobile app or web browser. These are on same local network. Do I need Ethernet Shield or ...
1
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0answers
893 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
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1answer
585 views

what pins are attached to ethernet shield SD card?

I have ARDUINO ETH SHIELD 06 - Rev 03. https://www.adafruit.com/product/201 what pins are attached to Ethernet shield SD card?
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1answer
352 views

Why my Galileo isn't getting a IP address?

I have an Ethernet cable connected to my router. I connected the other end to my laptop and got a successful connection. When I plug it into my Arduino Galileo gen2, even with Ethernet port green ...
0
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1answer
136 views

POE with Arduino Leonardo Eth

I recently purchased a Leonardo Eth and a 5v POE module in an attempt to have a POE micro-controller. I installed the module in the holes closest to the Ethernet jack side of the board, but when I ...
0
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1answer
56 views

help connecting atmega32 micro-controller to LAN [closed]

I have an atmega32 micro-controller and I would like to connect it to my LAN via ethernet, I'm planing to do this using arduino ethernet shield W5100 but I don't know how to start or how to interface ...
3
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2answers
1k views

Connect Arduino Uno to video camera's web Server via Ethernet (not working)

I work with cameras in the film and TV industry. A project I have just started tinkering around with is building an Arduino Uno-based box that would automatically collect the metadata (settings, etc.) ...
0
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1answer
828 views

Ethernet Shield - Multiple simultaneous connections cause TCP reset

I have a very inconvenient problem with a web server I'm writing for a Arduino Mega 2560 with a W5100 Ethernet Shield (with the "official" Ethernet lib). I wrote the server code and it works like a ...
0
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1answer
193 views

Arduino for push notifications to phone

I'm interested in using an Arduino for a project for taking information and sending it through a phone application. I was wondering what the cheapest option there is for an arduino with internet ...
0
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0answers
513 views

Reading values from Wiznet w5500 chip over SPI

I am trying to get the MAC address that is stored on the Wiznet w5500 chip. On page 29 - click here, it has the address of the values. It state that "This block can be selected by the BSB[4:0] value ...
0
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2answers
413 views

Connect my Arduinos to central server, despite different IP adresses

Community, A team of friends just built, with an Arduino UNO, a system where one can open a door lock from the internet. The Arduino UNO has an Ethernet Module (ENC28J60). When the command prompts, ...
0
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1answer
629 views

Arduino Uno Wunderground weather station - Ethernet connection failed

I'm new to Arduino. For my first project, I've decided to build a weather station where data is collected via sensors and is then sent to Wunderground. I'm using an arduino uno, an ethernet shield as ...
0
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0answers
670 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 ...
0
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1answer
704 views

Arduino connection websocket always fails

I am using the Arduino Websocket Client library to connect my Arduino Uno to a Socket.IO server. But the connection always returns 0 (fail) after the handshake. Anyone has used this library before? ...
2
votes
1answer
67 views

How can I make this code read a page every 10 seconds?

I got problems with the code and I have used most of today, trying to find a solution and it's starting to drive my crazy. I hope one of you guys will be able to help me out. I need the code to check ...
0
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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
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1answer
619 views

Arduino Mega web server always returning JSON data even if JSON is not passed in URL

I am trying to return JSON data if JSON is found in the HTTP header, and if not I am trying to display a normal page. But instead it always displays the JSON text, even if I do not pass the JSON in ...
1
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1answer
454 views

How to send information from a web-site to the arduino?

I currently have an Arduino Mega + an Arduino Ethernet shield, I would like to know if it's possible to send data to the arduino from a web-site hosted on the shield itself. So that when someone press ...
0
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2answers
3k views

Couldn't connect to local server using Ethernet Shield and Arduino Mega 2560

I'm trying to connect the arduino mega and ethernet shield and try to send some data to a php script. I have connect the ethernet shield to the laptop. Lap is connected to router through wi-fi. Any ...
1
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1answer
2k views

Why doesn't the Ethernet W5100 shield work on Gigabit switch?

I have an Arduino Uno with an Ethernet Shield based on the Wiznet W5100 chipset : It worked like a charm until I had to move it to another location and plugged it to a Gigabit switch. I had no link, ...
0
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1answer
23 views

Arduino Disconnects after router password changes

I am working with arduino Uno R3 connected with EPS8266(http://www.amazon.in/ESP8266-Serial-Wireless-Transceiver-Module/dp/B00O34AGSU?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=...
0
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2answers
3k views

Reading values from SQL Arduino ethernet

I'm about to do this project where I will make some lights flash up depending on some values that are in an SQL database on a server. I have already bought my Arduino and waiting for it to arrive. But ...
0
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1answer
595 views

Why do I get access denied when I do have mysql root user added to grant all privileges?

I am using the below mysql example sketch to upload data directly to mysql db. #include "SPI.h" #include "Ethernet.h" #include "sha1.h" #include "mysql.h" /* Setup for Ethernet Library */ byte ...
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2answers
461 views

Cannot run arduino as web client

I have ethernet shield mounted on arduino mega, I am able to run it as server but when i try to run it as client it doesnt work , most of the time it assigns itself 255.255.255.255 ip address which i ...
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2answers
3k views

Arduino using Ethernet shield WebClient example code is not working

I'm using an Arduino Uno and Ethernet shield with the WIZnet chip W5100. The WebServer code example is working. DHCP is working, the Ethernet shield is receiving an IP address from the Linksys modem "...
0
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1answer
564 views

Code won't read the first line from SD

The general idea I would like to target a link with certain parameters, which would trigger a force download of a txt file, to an SD card. Next, I'd like to loop through that file, and read one line ...
1
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0answers
193 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, ...