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Questions tagged [networking]

For question related to environment with networks.

0
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1answer
63 views

ESP8266 Peer to Peer with AP and STA - Cache AP Clients, Flush Their Requests?

I'm fairly inexperienced with Arduino and entirely new to networking, so bear with me. I've programmed a couple of NodeMCU devices to communicate the use of an instrument via activation of an LED. I ...
0
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1answer
225 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
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1answer
347 views

Secure HTTPS request fails 90% of the time

I'm using a NodeMCU, which is connected to an enterprise network at a school. The information given in the GET requests that the ESP8266 sends is sensitive, so naturally we want to make it secure and ...
1
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2answers
136 views

Can client IP address be obtained from Arduino Ethernet2 library for W5500 during client.connected() call?

I've found posts explaining how to get client IP by modifying the W5100 Ethernet library and the Adafruit CC3000 library but not the Ethernet2 lib for W5500 chip, which is different enough that the ...
0
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1answer
21 views

Regain WIFI connectivity

I wrote a code to be implemented in a SONOFF device (ESP8266 chip). My question is regarding disconnection due to failure/ power fail in wifi network - when such event happens, does wifi connectivity ...
0
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2answers
67 views

Can I control a Arduino from an apache server? [closed]

So I have a PC running a few services for my house. I'm trying to automate my home a little and would like to control various things in my house. Is it possible to control an Arduino from my HTML ...
0
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1answer
363 views

Every so often ESP8266 hangs… WifiClient seems to be at fault

This code works fine without any freezes: #include <ESP8266WiFi.h> #include <Servo.h> #include <WiFiClient.h> #include <ESP8266WiFiMulti.h> Servo turn; ESP8266WiFiMulti ...
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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 ...
1
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1answer
109 views

Multiple node network communication over I²C [closed]

I am working on a project where I want to send data from and to different Arduinos on a network. At the moment I²C seems the best option for my needs since I can specify where to send the data. But ...
0
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0answers
44 views

Set up mesh network with RF Transceivers

I would like to set up a mesh network of Arduinos with the following features/capabilities: No master node Arduinos capable of bootloading other Arduinos through RFs Capable of communicating over TCP/...
0
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1answer
307 views

ESP8266 cannot create TCP connections to this particular server

EDIT: I have created an issue about this here: https://github.com/esp8266/Arduino/issues/4593 I have this server: 185.205.210.197 (Check that it works: http://185.205.210.197/) And I have this code ...
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0answers
20 views

WPA2 AES wifi on LinkitOne board

I'm using a LinkitOne dev board for a development project at work and I need to use the campus wifi network to upload data, probably to thingspeak. The cisco wifi access points (Which I have no access ...
0
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1answer
105 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....
0
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4answers
115 views

ESP8266 networking [closed]

I am new to IoT. I have been reading articles to connect IoT sesors and updating data to Server. I want to connect 7 water pump stations ( all in different locations, and distance between each of ...
1
vote
0answers
32 views

Problem communicating with ENC28J60

I want to send/receive strings to/from an ENC28J60 via a C# application. I used my own "protocol" to do this. For example I send "" to Arduino and it replies with a string containing temperature ...
1
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1answer
1k views

Finding ESP8266 in a network

I am connecting an ESP8266 to my home network (WiFi). After successful connection, an IP is assigned to it. I am sending commands to the ESP8266 from an Android app. What can I do to find the ESP8266 ...
2
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2answers
277 views

Is there a way to update Arduino uno Over The Air [duplicate]

I have the Arduino uno with a Ethernet W5100 Shield and would like to remotely sketches. Is there a way to update Arduino uno over the air? If not, is there a wired network arduino solution that ...
0
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0answers
276 views

Wifi radio with an Arduino

I've done a Wifi radio with a headless Raspberry Pi in the past (connecting a radio MP3 stream available on internet directly on boot, without any user input), and now I'm wondering: would it be ...
1
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3answers
195 views

Can you connect more sensors of the same type to a single board while not using up more pins than if you were to use a single sensor?

I'm as new as you can be at Arduino programming and specific electronics, so I don't even know if I'm asking the correct question. I've ordered an Arduino a breadboard and some PCBs and now I'm ...
0
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0answers
98 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&...
0
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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 ...
0
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1answer
1k views

Error 400. The request has an invalid header name ESP8266 (HTTP-POST)

I'm trying to send a http post to my server from an esp8266-Wifi (I use the ESP8266 library) I check all my http post format, and I guess is okay... but at the response, the monitor serial answer me ...
0
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1answer
215 views

WiFi connections being lost on connection reset

Look at the trick in the last few lines of this code: #include <ESP8266WiFi.h> const char* ssid = "xxxxx"; const char* password = "yyyyyyy"; // Create an instance of the server // specify the ...
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0answers
221 views

Direct Access File System on Arduino Mega

Pardon my ignorance, I just want to determine whether or not what I am trying to do is possible. There is a CSV file that resides on a Windows network that I need to grab and parse using a Arduino ...
0
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1answer
376 views

Best way to send text to ESP8266 remote display

I need a remote display to show information sent via WiFi from another ESP8266. What needs to be sent is a string along with some variables, for example a string to be displayed along with two ...
1
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2answers
4k views

List of connected clients to server

I have a server on my arduino (WiFi) and want to save the clients that connect, so that I can send to them (to each separately) data later. Is the best data structure a linked list? How can I see if ...
1
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1answer
1k 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, ...
3
votes
1answer
723 views

2G/3G vs 4G/LTE Cell Connectivity for Sensor Prototype? [closed]

Would love any advice on Arduino cell connectivity. From what I understand: 2G (GSM/GPRS) is a dying technology. AT&T is shutting down its 2G network on Jan 1, 2017. 2G (CDMA) will have a longer ...
-1
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2answers
89 views

MAC address arduino

The MAC address is hardwired onto the NIC card when a device is manufactured. How is it that, we get to set a 48 bit MAC address of our choice while programming the arduino ?
2
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3answers
579 views

Arduino Mega 2560 + ESP8266 Problem with GET Request

I have an ESP8266 module connected to my Arduino Mega 2560. My goal is to send a GET request as below to the network: api.pushingbox.com/pushingbox?devid=vEB39F555B1B8295?tempData=cabbages If that ...
0
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2answers
3k views

Cannot ping ESP8266's IP address from a computer on the same network

I have an ESP8266 module connected to my Arduino Mega 2560. I sketched a simple code to pass whatever command I typed from the Serial Monitor to ESP8266 and vice versa: void setup() { Serial.begin(...
0
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1answer
159 views

where does access point's IP address come from for sketch AP_SimpleWebServer.ino in Github WiFi101 examples

I don't understand where the access point's IP comes from. Sketch uses WiFi.beginAP( ssid ) ..to start the AP. Then, printWifiStatus() gets the access point's IP with: IPAddress ip = WiFi.localIP();...
1
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1answer
10k views

POST data from Arduino to website

I am working on a project where I am trying to send data using HTTP and POST method from my Arduino Mega2560 to a website which I host on localhost. I am living to a students' accommodation and thus, ...
0
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1answer
617 views

User-Agent question

I've seen a few different User-Agents used in demo sketches and am curious as to what the various User-Agent options are and how to determine which one to use. For example... User-Agent: Mozilla/...
1
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1answer
78 views

How to use Aiduino module to connect to computer network?

I have 4 usb Hard Drives and I just want to connect them to computer network directly without a traditional computer. Is there an any module with 4 usb ports and one RJ45 port. The module should able ...
1
vote
1answer
289 views

XBee series 1 or 2? [closed]

I'm looking to buy some components to my master thesis: I have to create a sort of lab where I'll create a Zigbee network and some tasks on it. I'm wondering if I should buy XBee series 1 or 2 and ...
0
votes
1answer
1k views

Unable to communicate between ESP-12E module and mobile through ESP-12E router

I am newbie in Arduino. I'm trying to send data from an ESP-12E client module to a mobile via an ESP router module (I am using Arduino IDE for programming the ESP-12E). For this purpose I ...
2
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2answers
4k views

Arduino 4G LTE Shield

Is there by any chance a shield that can take an 4G LTE compatible SIM card activated by a carrier and establish a connection?
5
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1answer
504 views

RFID/NFC Tag get data from wordpress MySQL

I have a local workshop for students to teach them 3D printing/woodworking I want to know if its possible to create RFID/NFC tags using wordpress data from MySQL or HTTP/HTTPS. Web Scenario : I ...
0
votes
1answer
323 views

Open WiFi Configuration Automatically

Is it possible to have an Arduino Uno + WiFi 101 recognize when the USB cable has been connected and prompt a user to enter a network name and password? Can this be stored on the Arduino itself or ...
1
vote
2answers
631 views

Hardware network-infrastructure for a fully-arduino-based home-automation project

As already mentioned in another question, I'm spending LOT of time planning the home-automation system for my new house (currently still in the "still building" phase). Even if started only as a "...
1
vote
1answer
838 views

Advice for checking integrity of serial char strings?

I'm trying to create a flexible but reliable system for arduinos to interact using serial ascii strings. I'm using a message structure comprised of Command[10] + (optional) Params[20] + (optional) ...
0
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3answers
2k views

Connecting Arduino with Philips Hue

I'm trying to control Philips Hue lights through an Arduino Uno (with a WiFi shield Model R3). Both the shield and the Philips Hue Bridge are connected to the same network and I'm trying to send JSON ...
1
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0answers
161 views

Receiving and transmitting messages simultaneously

tldr; I am writing a mesh network software using arduinos. I need to wirelessly receive, process, and transmit data, all simultaneously. I am aware of protothreads library, and the other software ...
0
votes
1answer
658 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 ...
0
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2answers
1k views

Simple network protocol to communicate between N slave arduino and 1 central arduino? [closed]

i am looking to communicate text ( 40 char for each message ) between N arduino and a central one ( Communication is one way slaves to Master).I am looking for wire communication with 1 to 5 m ...
3
votes
1answer
331 views

Module and library for self healing large sensor network

I have to build a wireless sensor network with arduinos on my project. It does not need to be a mesh network, but it needs to have self healing capabilities. I would like to use something cheaper ...
1
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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 ...
1
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0answers
61 views

Multi-drop RS485 device control v1.0 - why is limit for “TIME_BETWEEN_MESSAGES ”?

I am going to use Nick's rolling-master system library (http://www.gammon.com.au/forum/?id=11428) in my home project. For first experiments and testing, I have: - BAUD_RATE = 9600 - max adress = 2 (...
0
votes
1answer
230 views

How to network multiple Arduinos so they react to the same signal

I want to build a project that contains multiple Arduino nano's, each connected to one controlling Raspberry Pi. I would like to send one signal (a string of characters or numbers) which would be the ...