Questions tagged [wifi]

Wi-Fi is a trademark of the Wi-Fi Alliance. A Wi-Fi enabled device such as a personal computer, video game console, smartphone, or digital audio player can connect to the Internet when within range of a wireless network connected to the Internet.

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Error connection to ESP8266 NodeMCU ESP 12-e

I'm having a problem getting the Arduino IDE to connect to this board: I added the URL for the board manager in preferences: Added the board in the board manager: Selected the proper comport (COM4) ...
Jason Crosby's user avatar
2 votes
1 answer
126 views

Very slow to connect to WiFi with ESP32 (minutes, not seconds)

I am having some issues with connecting to WiFi with an ESP32 board. It is very sloooooooooow. The first few times I tried, I left it alone for 20 minutes and it still wasn't able to connect. So I ...
Deling Ren's user avatar
-2 votes
1 answer
125 views

Which WiFi module is able to host a custom web UI and can act as a station and AP?

I am an Arduino beginner. I am searching for a WiFi module that can act as a station and access point. It should have a external antenna. I need to upload a script that starts a web server, so I can ...
Black's user avatar
  • 109
1 vote
0 answers
50 views

Problem with sending a GET request using the WiFiEsp library

Hello I am trying to make a request using WiFiEsp library but even the examples not working, I have searched a lot but never solved it. most of the solutions are outdated and do not solve anything, I ...
OSMX's user avatar
  • 11
-2 votes
1 answer
114 views

Matter protocol with Arduino Mega/Giga

I would like to try matter protocol with Arduino mega or Arduino giga. But I don't find any sample or library. I have only found libraries compatibles with ESP32. Do you know how I can work with ...
Bob5421's user avatar
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0 answers
177 views

WiFi.scanNetworks() sometimes triggers wdt reset

In my sketch for ESP32, I call the network scanning function: WiFi.scanNetworks(true); but sometimes it trigger a wdt reset: E (372741) task_wdt: Task watchdog got triggered. The following tasks did ...
Mark's user avatar
  • 393
1 vote
1 answer
219 views

Connect to wifi works only without password (Problem around WPA security)

I have an ESP32 Joy-it - SBC NodeMCU-ESP32 that should be use with board "ESP32 Dev Module". IDE says : Chip is ESP32-D0WDQ6 (revision v1.0). Website product: https://joy-it.net/en/products/...
Servuc's user avatar
  • 133
1 vote
1 answer
96 views

How can I host a WiFi network from an Arduino getting a connection from a SIM card?

My friend and I are doing a project and we're stuck on a problem. We tried looking stuff up but it looks like no one documented something similar before. Basically, what we want to do is have one ...
loom's user avatar
  • 21
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0 answers
68 views

Respond to all WiFi probe requests with ESP8266?

I'm wondering if there's a way to program an ESP8266 such that it responds to all WiFi beacon probe requests. For example, if a device sends a probe request for a WiFi network name, e.g. "...
Blue Herring's user avatar
2 votes
1 answer
381 views

Arduino MKR wifi 1010 ssl certificate protection

I'm using Arduino IDE v2.1.1 and Arduino MKR wifi 1010. Everything works fine and at this moment I have a need to protect the wifi connection with ssl certificate. I have generated the ssl certificate ...
Semen Shekhovtsov's user avatar
0 votes
1 answer
9k views

RX and TX pins on esp32

hello guys i'm new to this field i really need your help i want to wire a GSM module (SIM808) to a ESP32 board using the TX and RX pins so the pins are labeled RX and TX no pin number like the others ...
Hach Rbh's user avatar
1 vote
0 answers
35 views

DEVKIT V1 DOIT 30 pinout board could not read analog value when using wifi library [duplicate]

I am using DEVKIT V1 DOIT board and 30 pinout board. When I upload this code for checking analog value from serial monitor: // Define the analog input pin for the IR sensor const int analogPin = ...
Asif Uz Zaman's user avatar
5 votes
0 answers
457 views

Internet in ESP32 is not working with IPv6

I am using ESP-WROOM-32D in STA mode with Arduino IDE(2.0.5) ESP32 board(2.0.9). I am trying to do http post request with ESP32. Router that provides internet supports only IPv6. Here I am getting ...
dharmikP's user avatar
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2 votes
2 answers
669 views

Does ESP32 can support WIFIDirect

I would like to establish a simple P2P connection between an ESP32 and an Android device without the use of an access point. I should be able to send and receive data from the ESP32 through the ...
Abhay Kondru's user avatar
2 votes
0 answers
31 views

ESP32 WiFi server.send(); is it exclusive to ESP328266 modules, Arduino?

Is the function server.send(); exclusive to ESP8266 modules, Arduino? Where can I find documentation regarding the application of this function with an ESP32 module with WiFi?
Paul Wilkie's user avatar
3 votes
2 answers
327 views

ESP8266 Wifi connection problem

I have a Feather Huzzah, aka ESP8266, that I am trying to connect to the Wifi. One major thing is, that my landlord decided to use the worst Wifi SSID and PW. The SSID contains an ä and a whitespace, ...
DaMusikant's user avatar
1 vote
1 answer
283 views

stream a "big" array of measures to a server through wifi

I'm measuring accelerations at "high frequency" (4kHz) from an accelerometer (ADXL355/ADXL357) to an esp32. It's crucial that no sample is lost while performing a measure which last say 2 ...
AlekseyFedorovich's user avatar
1 vote
0 answers
135 views

try to send AT commands from Arduino nano to ESP01

I encountered an issue when I try to send AT commands from Arduino nano to ESP01 I tried to find any tutorial for more helps, but I find nothing. please someone can help me. I tried the tutorial from ...
Salomon Oholo's user avatar
3 votes
1 answer
473 views

Mobile hotspot with wemos d1 mini

I recently got a wemos d1 mini and now am trying to connect it to my IPhone 13's hotspot, however it doesn't connect, I tried to run the wifiscan example - and it doesn't even detect it there. I tried ...
Arthur Isnt original's user avatar
1 vote
0 answers
65 views

ESP-07s only connects to my wifi very occasionally

I've got an ESP-07s and I used an example code from the internet. When I power it and the program starts, it should just connect to my Wifi network. It has a simple webpage that should be locally ...
user2190492's user avatar
1 vote
0 answers
214 views

ESP8266 + NodeMCU Motor Shield spinning motor only in one direction

I hooked my ESP8266 Wi-Fi module to an ESP-12E Motor Shield and connected it to an RC car. It works fine when connected to my laptop (Goes forward, backward, left, and right. Though the car doesn't ...
Hamaad Fahim's user avatar
2 votes
0 answers
85 views

Static IP configuration failed in NODEMCU

I'm trying to connect NODEMCU to my home network and set static IP address, but the static IP didn't set properly this is the code: #include <ESP8266WiFi.h> void setup() { // put your setup ...
m0rbot's user avatar
  • 21
0 votes
1 answer
259 views

Issues getting WPS working on ESP32 [closed]

I am trying to implement WPS on ESP32. A WT32-SC01 Plus to be exact. It seems to working so far that I'll get the WPS connection but then it takes around 5 minutes [!!!] to get IP address from the ...
Radek Suski's user avatar
0 votes
0 answers
132 views

Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500 Firmware updater

I have a Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500 that indicates the firmware installed is too old for the Wifi101 library (Version 0.16.1). I have been trying to do a firmware update but ...
Rich Maes's user avatar
  • 243
2 votes
3 answers
2k views

WiFiClient.cpp:517 flush(): fail on fd 48, errno: 11, "No more processes" what it mean?

Hello i wrote this sketch that upload a temperature reading of a DHT22 sensor to a phpMyAdmin server in localHost, the sketch work fine, the data been upload every 5 min to the server than ESP go t ...
Damiano Miazzi's user avatar
1 vote
0 answers
100 views

How to connect to AWS iot?

I am trying to connect esp8266-12f to aws iot core following this tutorial. Below is my code. main.cpp #include <Arduino.h> #include <ESP8266WiFi.h> #include "config.h" #include &...
Jess's user avatar
  • 11
0 votes
0 answers
254 views

Forget WiFi ESP32

How can you make ESP32 forget all the Wi-Fi networks it was connected to? Or at least forget the one to which the board is currently connected?
Kulikov Nikita's user avatar
1 vote
1 answer
1k views

Slow WiFi reconnection after deep sleep (6 to 10 seconds)

With my ESP8266, I need to make a simple GET request to a server, and then go to deep sleep (the goal is 1 year battery powered)... until a signal comes on RST and then it starts again. The following ...
Basj's user avatar
  • 398
-1 votes
1 answer
153 views

LEDs controlled by PHONE on ESP32

I am having doubts with a project I'm making. My project involves a sets of LEDs stripes, among which some are controlled from a smartphone, and some automated. The LED strips are connected to an ...
BruceWawe's user avatar
1 vote
0 answers
460 views

ESP32-S3 - HttpClient only returns 200 status code no JSON payload data

I have a ESP-S3 board and am trying to get JSON data from our server. I am using the following code (see below) as a basis for mine. This code works. If I change http://jsonplaceholder.typicode.com/...
BAW's user avatar
  • 11
1 vote
0 answers
852 views

ESP32 WIFI error when trying to initialize WIFI after stopping and deinit WIFI driver

I have a firebeetle ESP32 board and I use VScode with platformIO. My platform is espressif32 v5.0.0 and the framework is arduino. I am currently implementing a WIFI connection as follows: bool ...
Slev1n's user avatar
  • 21
3 votes
0 answers
1k views

How to correctly synchronize time with NTP server?

I want to synchronize time with NTP server once in some time. I am using DOIT ESP32 DEVKIT V1, I tried with getLocalTime() function but it returned true even without wifi, but as I know without wifi ...
hungryman's user avatar
1 vote
0 answers
1k views

ESP32 wifi server with multiple clients

I have a program where I configure my ESP32 as a server and it sent randomly generated data, the problem is that I can only connect 1 client at a time, what I want is that multiple clients can connect ...
Eduardo23484's user avatar
0 votes
0 answers
145 views

Communication between two ESP32s using WiFi

I have two ESP32s. One is acting as webserver and the other is acting as a client that will send a GET request to the server ESP32. Both of the ESP32s are connected to the same WiFi AP. For sending ...
Arslan's user avatar
  • 136
-1 votes
2 answers
251 views

Read SD card on ATMEGA328 from ESP826

I have a ATMEGA328 with ESP826 (like this http://arduinolearning.com/hardware/atmega328-esp8266-arduino-board.php) and can successfully send information from the ATMEGA328 to the ESP826 via serial. I ...
user1505631's user avatar
3 votes
1 answer
687 views

Why does Arduino Nano 33 IoT always choose the weakest WiFi BSSID?

I have an Arduino Nano 33 IoT configured to connect to my WiFi network with a pretty straightforward code: #include <WiFiNINA.h> int status = WL_IDLE_STATUS; status = WiFi.status(); while (...
adamsfamily's user avatar
-1 votes
1 answer
2k views

POST request (HTTPClient) with ESP8266 not working on localhost (http code = -1)

I've been looking around for a solution, but couldn't manage to find one. I'm looking to send a post request from an ESP8266 on a local API. Here is my code : #include <ESP8266WiFi.h> #include &...
Nicoji_'s user avatar
2 votes
0 answers
2k views

ESP32 access point with an ENC28J60 ethernet module

Does anyone know if the following is possible? Any advice would be much appreciated. I am programming an Ethernet connected Arduino to be a webserver. What would be ideal is a small portable "...
MrExplore's user avatar
4 votes
1 answer
2k views

ESP32 Wifi not working when powered by battery

I'm quite new to ESP32 development. I've been using this devkit for a few small projects and everything was going smoothly until I decided to run it on battery. In particular, the ESP32 devkit I'm ...
luigi's user avatar
  • 63
1 vote
0 answers
362 views

WeMos D1 losing WiFi connection

I have a WeMos D1 connected to an air quality sensor and publishing the value on a self-hosted website. Initially everything works fine (although router UI does not display WeMos). After an hour or ...
Han88's user avatar
  • 11
3 votes
1 answer
2k views

ESP32 ADC <-> WiFi issue

I'm using the ESP32's ADC1 (not ADC2, which conflicts with WiFi functionality) to capture some analog data received at IO36 (an ADC1 port). As soon as I uncomment the WiFi.mode(WIFI_AP_STA) line (even ...
AKTanara's user avatar
  • 191
1 vote
1 answer
868 views

esp8266 - server.handleClient() fails to call assigned function

I'm trying to get one esp to send integers to a second as a part of a simple remote control, but after multiple days I can't get it to work. The transmitter seems like it's connecting and sending ...
Eric Ardis's user avatar
2 votes
1 answer
583 views

failed log in attempts on softAP

I would like to setup an access point using the esp32 that logs any/failed access attempts i have looked through some source files, and came across esp_event.h, which seems to allow registering an ...
matt richards's user avatar
2 votes
0 answers
572 views

HTTPClient works with localhost but not server

I started to work with HTTPClient and the WiFly library to connect to an SSID and then send POST data to a server. When I was sending the data to my localhost, it was working on localhost, but when ...
Chris Fodor's user avatar
1 vote
1 answer
129 views

Problems connecting to WiFi101 access point

I currently have two Arduino Zero boards (using the SAMD21 microcontroller), each with an ATWINC1500 wifi module attached. I have established one of these units as a wifi access point with a server ...
David's user avatar
  • 129
-1 votes
2 answers
4k views

how to change a const char*

At the top of my arduino sketch, I have the following : // softAp const char *softApSsid = "abcdefg"; const char *softApPassword = "123456"; Those are the DEFAULT ssid and ...
Musa's user avatar
  • 167
1 vote
1 answer
3k views

Is possible to use ESP-NOW in LR mode (long range) simultaneously with WIFI STA (to connect to internet over wifi)

I am building esp-now gateway with mqtt but need long distance (200 meters). I try to use LR mode but when I enable de LR mode I lost connection with WiFi. Is licit to make use of LR and STA at the ...
Diego Serrano's user avatar
4 votes
1 answer
816 views

Arduino ESP8266WebServer hangs after a while but responds pings

I have an ESP8266 module that I use to be able to power on three computers if they are off. The ESP8266WebServer has what I needed to have a POST method rather than a simpler GET one since I am ...
Elder's user avatar
  • 41
1 vote
0 answers
400 views

WiFi HaLow library

Does anyone know if some Arduino based library is on the way to support new low power WiFi HaLow modules. If there is, I would like to know for which module? For reference I'm sharing link here
sairfan's user avatar
  • 121
2 votes
0 answers
387 views

How to fix this problem of invalid conversion from 'const char*' to 'char' [-fpermissive] [closed]

Im working with node mcu ESP 8266 and trying to make it a webserver but keep encountering this problem. #include<ESP8266WiFi.h> WiFiClient client; WiFiServer server(80); void ...
Stars and planet's user avatar

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