Questions tagged [networking]

For question related to environment with networks.

24 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
4k views

Arduino Ethernet shield server and client at the same time

Hardware: Arduino Mega 2560 Rev3 Ethernet Shield Rev3 A sensor Goal: Take value from sensor, upload it to ThingSpeak. Host a web page on the Arduino. Question: I've done both things in the past. ...
1
vote
0answers
31 views

Two SSL connections at the same time on Uno WiFi rev 2

So I want to have one persistent SSL connection to a cloud server (Azure IoT Hub) to upload telemetry and another SSL connection to a server to perform a simple GET request every 30 minutes. I've ...
1
vote
0answers
201 views

How to parse data most efficiently coming through mqtt with ESP8266

I am writing a program that is currently set up like so: Python script running on my computer. Raspberry pi is the broker for the mqtt data transmission An ESP8266 is programmed to listen to/...
1
vote
0answers
59 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
vote
0answers
186 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 ...
1
vote
0answers
72 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 (...
1
vote
0answers
739 views

How to send data from cc3000 to herokuapp server

I tried this code: #include <Adafruit_CC3000.h> #include <ccspi.h> #include <SPI.h> #include <string.h> #include "utility/debug.h" #include "DHT.h" #include<stdlib.h> //...
0
votes
0answers
30 views

TCP client readStringUntil only when data exists

I have the attached script that reads data from a socket server (it is PHP at the server end). My problem (I think) is that the readStringUntil() needs a test above it, so that it "reads up to \r&...
0
votes
0answers
34 views

ESP8266 constantly crashes in malloc-related “check_poison_neighbors(unsigned short)” when networking happens

My project involves a bunch of peripherals, but most importantly for this project, a request to an NTP time server is done using the standard NTPClient library. Suddenly, after modifying some ...
0
votes
0answers
36 views

how to set up an ESP8266 as a webserver

I would like to set up an esp8266, connected arduino as a webserver, specifically, one that has its own IP, and is stand alone, not connected to other networks, and offers its sensor info as the ...
0
votes
0answers
27 views

Read the respiration data to Arduino serial console

Currently working with ADS1292rShield library. Is there any way to read the value of the respiration and heart rate without using the Protocentral GUI. Printing DataPacketHeader to the console just ...
0
votes
0answers
27 views

Data transfer unit (DTU) compatible with Arduino

I want to connect my arduino to the internet via 4G. I tried it with an MKR-GSM 1400 but it didn't really work. So I think the quickest solution for me right now would be to buy a all-in-one data ...
0
votes
0answers
387 views

ESP32 CAM sending a file via POST method

I'm using HTTPClient.h for sending the image file that taken by ESP32-cam, but it sends just headers. the important part of code : File fsUploadFile2 = SPIFFS.open("/picture.jgp", "r"); ...
0
votes
0answers
95 views

What the best way to connect an Arduino to 3G/4G

I want to make a connection to the mobile data network with an Arduino in an area with low signal quality. For this I already bought a better antenna and I am using a simcard wich is open to every ...
0
votes
0answers
495 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. ...
0
votes
0answers
39 views

How can I control a slave ESP8266 from a local server and also from another ESP8266?

I have a power strip with a ESP8266 which is supposed to turn it on upon command from a OpenHAB server, or to stay on for a predefined time upon command from another ESP8266 (serverless). The reason ...
0
votes
0answers
43 views

I got a problem in sending voice file

I wrote a code that can send a file. If I send a text file it will work perfectly, but when I try to send voice it will send the whole file form the Sender side, but in the receiver side he won't ...
0
votes
0answers
94 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
votes
0answers
33 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
votes
0answers
135 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
votes
0answers
102 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
votes
0answers
386 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
votes
3answers
90 views

Image Processing

I have a project I am working on where I need to check the pressure on a gauge using a camera. I am familiar with a little openCV programming using a laptop webcam. However, for this application, I ...
-1
votes
1answer
185 views

Doesn't work radio transmission from Arduino Uno to Arduino Pro Micro

I have Arduino Uno, Arduino Pro Micro, XY-MK-5V and FS1000A. I need transmit data from Pro Micro to Uno. Transmitter: #include <VirtualWire.h> void setup() { Serial.begin(9600)...