Questions tagged [networking]
For question related to environment with networks.
104 questions
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How to timeout hung incoming connections to the Ethernet port?
If I telnet to an Ethernet capable Arduino (e.g. shield, Leonardo, Leonardo Eth) with something like telnet [ip] [port] and then do nothing, the connection hangs. Seemingly for ever, or at least ...
- 129
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68
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Disable verification of certification SSL A7670SA
I have the code below and it doesn't work with my URL. I receive a
715(Handshake Failed)
This code below works normally, but with my API it doesn't work.
I'm using a A7670SA with Arduino Mega 2560.
...
- 11
3
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1
answer
279
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How do I set the DHCP pool for an ESP-WIFI-MESH? [closed]
I'm building a mesh with ESP32 dev kits (ESP32-DevKitC V4) using the ESP-IDF VS Code extension and the ip_internal_network example project. The code for the example, common project components, and the ...
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3
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1
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357
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The gateway is not working in Arduino EthernetENC
I am using ENC28J60 and EthernetENC library to connect an Arduino UNO with ATmega328 to the network. Everything works fine within the local network, but outside of it, I cannot ping the device. What ...
-2
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1
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188
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Connect to 8Base API with TLS on Arduino Uno Wifi Rev2
I'm trying hit some endpoints on the 8Base API with the Arduino Uno Wifi Rev2. I was able to get this API call to work with Postman, but I've had no luck once I convert it to my Arduino code. In ...
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2
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234
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UDP packet loss and very high ping time
Scenario
I'm writing a code for Nucleo-144 F429ZI. It receives UDP packets (actually OSC bundles) and send back an answer when the command is completed.
Issues
It work fine most of the time. But there ...
- 393
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2k
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ESP8266 - How to recieve UDP multicast packet?
how can I recieve udp multicast packets in ESP8266? I have this piece of code:
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
const char* ssid = "my_wifi_ssid";
const char* ...
- 139
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1
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2k
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esp32-cam stuck in repeat boot
I am trying to bring the esp32 example code live. I am able to upload the image error free but when I remove the jumper and then press the reset switch, instead of seeing it logon to my network via ...
- 201
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51
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How do I make two (or more) pins available on my server url?
I have a webserver configured on my esp8266 with is set to fire off electrical relay0 on my 8 port relay board.
The device initializes relay0 perfectly and without errors.
But when I configure the ...
- 201
1
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0
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155
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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 ...
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486
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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 ...
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0
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69
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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 ...
- 902
1
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0
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57
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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 ...
- 111
0
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1
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244
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Low power error with serial connection
So I want to create an application where I can send data with a SIM-Module, and when it's not needed it should fall into a "standby-mode" because it's battery powered. But I always get this exact ...
- 174
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1
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1k
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Udp.endPacket fails
I am trying to send measurements over UDP, but the function Udp.endPacket continuously fails.
I use an Arduino Uno WiFi rev 2, WiFiNINA library version 1.4.0 and WiFiNINA firmware version 1.2.1 which ...
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1
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75
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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 ...
- 339
1
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1
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1k
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Send files via network [duplicate]
I want to send a file from an Arduino to the server or another Arduino.
I wrote a code that's open the file then write the content of the text on an array and then send it.
That would work if the ...
- 31
-1
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3
answers
146
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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 ...
Neal
-1
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1
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2k
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NodeMCU Ping working on one but not another
Update 2:
Have tested by pinging various devices on different subnets / vlans
and did a pcap on the wifi AP
I can see the icmp requests going through for each request except for ones on the 4.x subnet,...
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1
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1k
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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 ...
1
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1
answer
3k
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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 ...
- 171
0
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1
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560
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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 ...
- 1,049
1
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334
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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 ...
- 113
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1
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1k
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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 ...
- 225
1
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1
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181
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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 ...
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