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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168 views

Arduino-like ethernet only board?

I don't think USB chip is more expensive than Ethernet chip. So, I expect there should exist a board like Arduino, but where USB is removed in favour of Ethernet. Are there such boards?
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575 views

arduino ethernet run php from sd card

I am just interested, but I would like to run a webpage with php on my arduino ethernet. I would like to be able to store my webpage on the sd card as well. does anyone know of a library that would ...
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1answer
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Informations lost in a string

At first, I sorry if I make some English faults but I'm French. So, I'm making a connection between a client and an Arduino Uno. I receive all data that I need but when I send a response to my ...
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1answer
268 views

Ethernet Controlled Arduino Arm

Good day, I am currently attempting to write code that will allow a user to connect to an Arduino Mega via IP address and control a robotic arm on the X and Y axis as well as open and close the claw. ...
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2answers
2k views

Wired IoT sensor network with PoE?

Objective: Maybe I'm a bad Googler, but I am finding very little on wired Internet of Things sensor networks using Arduino. Project Goals: Arduino based sensor nodes that connect to the local ...
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1answer
1k views

Arduino mega 2560 Stacked with Ethernet/SD card Shield Heat up

Stacked mega and ethernet/sd shield: When I do this stacking, it heats up. I tried connecting the SPI via ports 13-10 (no stacking), it doesn't work. Also tried connecting the ICSP (red circled mark) ...
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1answer
1k views

BMP280 sensor not initializing

I am successfully using a BMP280 sensor via SPI connection with an Arduino Uno R3 board. I'm trying to run the same code with the same setup on an Arduino Ethernet. However the sensor is not ...
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1answer
5k views

Ethernet Shield: Failed to configure Ethernet using DHCP

I am currently making a design that uses the Arduino's Ethernet shield. I am using the PushingBox API for Arduino, and have tried it with my Arduino Mega (2560) with the ethernet shield attached to ...
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3answers
2k views

Ethernet shield/WebServer problem: 'server is at 0.0.0.0'. Any suggestions how to debug it?

Ethernet shield problem. When running the WebServer example sketch, the Serial Monitor shows that server is at 0.0.0.0. Any suggestions how to debug it?
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2answers
1k views

Cannot directly connect Arduino Ethernet to PC

I have been following various tutorials (especially: this) to connect an Arduino Ethernet board to my Ubuntu PC via Ethernet directly. The IP address of the computer was found to be 10.100.31.128, ...
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2answers
1k views

Can a 9V battery be used as a backup power supply (to Arduino Uno) while plugged directly into Vin and ground?

Sorry if this has been asked before, but I've read tons of threads and it seems the answer is only implied on a couple of occasions. I'm an electrical noob, but I understand that a 9v battery ...
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0answers
121 views

Resend data traffic from an Arduino

I have an Arduino with an Ethernet shield and I want to capture all Ethernet data traffic that connects to the Arduino via [as?] a router. This is because I want to use the Arduino like a honeypot and ...
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1answer
2k views

Ethernet shield or Wifi sheild - Arduino?

To control some LEDs through internet using Arduino UNO, which type of connection is better ? Ethernet or Wifi? (Later, I may connect some relays instead of LEDs, and control (turn on and off) some ...
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2answers
11k views

Connecting ethernet shield to computer

What configuration settings do I need to change on my computer to use the ethernet shield mounted on my Arduino UNO as I don't want to connect the ethernet shield to the router?
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0answers
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WebClientRepeating not printing response to Serial

I'm following the tutorial in WebClientRepeating and it says that "The content of the page is viewable through your Arduino's serial window." However the output in my Serial window is just saying "...
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640 views

Problem related to Arduino ip address

Can anyone explain to me why my output ip is: 15.16.17.18? I configured my addresses as follows: Arduino : gateway 192.168.1.1 ipaddress 192.168.1.8 subnet 255.255.255.0 My local network: gateway ...
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1answer
3k views

Possible to create IP-to-USB HID (keyboard) device using Arduino?

Is it possible to create an IP-to-USB HID (keyboard) using Arduino? I'd like to connect an Arduino to my network using Ethernet, and then send it commands using TCP/IP and have those commands ...
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1answer
4k views

What are the parameters of the browseUrl() callback in the Ethercard library?

I'm reading a code that uses Arduino as a webclient and when he tries to catch the info from the site, he uses a callback with the following parameters: static void response_callback (byte status, ...
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231 views

How to approach an complex Arduino Uno project (Serial, SPI, Ethernet) in pure C, without libraries?

I have a college assignment where I need to get serial output, the Ethernet shield and SPI communication with other boards to work. We are not allowed to use any existing libraries, though we can use ...
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1answer
2k views

How to recover from DHCP Renewal and Rebind failures?

I'm using an Ethernet shield with the built-in Ethernet library. I obtain an IP address using DHCP, and call Ethernet.maintain() periodically to ensure that the DHCP lease is renewed as required. So ...
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1answer
107 views

Interfacing 9-Axes Motion Shield with RPi and WiFi Shield

I recently purchased the Arduino 9-Axes Motion Shield. I have two questions: Q1. The official Arduino page says that the shield doesn't have any external power source and can only be powered up by ...
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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 ...
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1answer
378 views

IOt application example Error

I have downloaded code from below linkLink of code. I am trying test code from below. I am getting warning for below code.I couldnot able to find how to sort out #include <SPI.h> #include <...
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1answer
147 views

Controlling arduino over webserver

I want to control arduino through Internet without using Ethernet shield. I know there is a way. So can you help me what things I'll be needing for that
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2answers
4k 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 ...
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5answers
5k views

A simple login page on Arduino Uno

I'm trying to setup home automation system controlled with webpage stored in SD card of Arduino, I was thinking if it was possible to set a login page, only combination of correct user id & ...
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1answer
1k views

Is there a practical way to broadcast and receive ascii payloads over ethernet or wifi?

How best might arduino nodes pass incoming serial ascii messages out as ascii network broadcasts for all others to receive and pass out through their serial ports? ie: typing a msg from the IDE ...
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2answers
5k views

MQTT broker and Arduino + Sensors NRF24L01

I am newbie, I have never used MQTT before, so I have some questions. Here is my topology. I have several sensors (Arduino Pro Mini + NRF24L01) and main server/handler(Arduino Mega + Ethernet Shield ...
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0answers
393 views

Problem using Adafruit nRF8001 (BLE) with Ethernet module on Arduino Nano

I'm working on Arduino Nano and I have to use both the Bluetooth LE module Adafruit nRF8001 and ENC28J60 Ethernet module using Ethercard The idea of the project is to receive data from smartphone via ...
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2answers
2k views

Unable to connect Ethernet shield W5100 to localhost

I have an Arduino Uno and a W5100 Ethernet Shield. I am trying to post some data from the Arduino board to the WAMP server running on my computer. I do not have a router so I have directly connected ...
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1answer
93 views

Read information from Twitch's API and execute actions depending on the output

i'm trying to create a display that notifies me when someone goes live on twitch. I need to acess the API and check if the 'stream' object is null or not. Then, perform an action depending on this. ...
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1answer
292 views

Arduino Ethernet intermittently connects to server

Here is my code: #include <SPI.h> #include <OneWire.h> #include <EthernetV2_0.h> #include <EthernetClientV2_0.h> #include <EthernetServerV2_0.h> #include <...
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1answer
883 views

Saving byte array in PROGMEM instead of SRAM

For an ethernet project I do, I need to store the Ethernet Shield's MAC address. I store it like that: byte mac[] = { 0x90, 0xA2, 0xDA, 0x0F, 0xE1, 0x85 }; That works OK, but in my project I need ...
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1answer
360 views

Why does Ethernet.begin() require a MAC address when WiFi.begin() doesn't?

I am working on an Arduino application which is dependant on a certain library. This library uses the Ethernet class for network communications, but ideally, I would like it to be wireless (I have ...
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1answer
84 views

Update code over Ethernet?

I've got an Arduino faithfully monitoring our sewer lift pump. It talks to the world over Ethernet (with PoE). I'm wondering if there is any way to load new code over the Ethernet as well. Any ideas ...
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2answers
1k views

W5100 Ethernet shield DHCP fails with a Switch

we are using Arduino W5100 Ethernet shield. The code is to try DHCP first and if that fails, then try the static IP. we do the Ethernet Initialization and stop every time. The library is Arduino ...
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2answers
607 views

Arduino hangs after less than a minute, but not on USB

I have arduino uno + ethernet shield + 9V/200mA adapter. I am trying to send some data with HTTP connection. When it's connected to USB it works perfectly, but when I plugged out USB, hangs (after ...
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1answer
2k views

Ethernet shield reset problems

I know there are multiple threads about ethernet shields not starting properly after power up and that there are versions that don't have those problems. But which versions are okay? Which versions do ...
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3answers
4k views

Connect ethernet cable wires directly to pins

Is it possible to uncrimp a RJ45 plug and connect the wires directly to the Arduino pins? I guess I'd have to decrypt the ethernet signal then on my Arduino which might not have enough processing ...
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1answer
908 views

connecting RTC DS1307 to ethernet shield

What is the easiest way to mount DS1307 to ethernet shield? I tried to do this: https://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/wiring-it-up but my program just freezes when I ...
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1answer
74 views

Control the ethernet shield with Chrome and Safari

I am trying to communicate with ethernet shield. When I enter the IP in Chrome the job is done (simply an LED turns off and on with IP/$1 and IP/$2) but with Safari it is not. Any idea what the ...
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0answers
266 views

Suggest some ways to communicate (Rx and Tx) between Arduino and LabVIEW through Internet

Suggest Hardwares to use and also suggest some place to learn about IoT, video tutorials, websites, blogs, books etc. Currently I am using Xbees to communicate between LabVIEW and Arduino Mega. Most ...
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1answer
1k views

Arduino with DS18b20 and ENC28J60 to thingspeak

Can anyone help me to make this work? I have been trying for a couple of days to make this work, but no luck. I use a DS18b20 Temperature sensor and an ENC28J60 Ethernet module. The last code that I ...
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1answer
372 views

Is there something I can use to control Arduinos easily over Ethernet with .NET?

I'm wondering if there's anything out there that maybe works pretty similarly to Firmata, runs on Unos or Megas, and can be controlled over Ethernet. I am writing a home automation system with .NET, ...
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2answers
188 views

TCP connection CPU usage, multiple signals?

I'm connecting a client (java program) to an arduino (server). What I want to know is, how high the CPU usage is, and what to do if there are no clients that are trying to connect to arduino? Should I ...
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2answers
527 views

Help putting an Arduino project on the Internet

I'm working on quite a big project and I need few advices. Basically, Arduino will be receiving data (Strings) and will work with it. No problems with that, but I don't know what to do with receiving ...
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0answers
288 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"; ...
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2answers
430 views

Arduino read from Server periodically

I have an arduino attached with a RGB-Shield. I want to query my server for the RGB values periodically. I basically got it working using the Ethernet Shield but it takes too long to get the value (~...
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1answer
354 views

Making Laser Tripwire with Phone Messaging [closed]

I am looking at Arduino and Raspberry Pi and I want to do a pretty advanced project. I want to make a laser triggered security project that sends a message to either a android or iPhone. First I don'...
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1answer
762 views

Arduino ethernet shield not responding to every request because it is busy

I have a simple HTTP server that monitors a serial port and responds to HTTP requests by sending the value. The serial port constantly outputs data, so that apart from a brief moment when the device ...

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