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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21 views

Desmos D1 + Numpad + relay can't put D15 pin on HIGH

So I basically have the following setup: This schema is not %100 accurate, since the tool I used to generate this did not allowed me to express exactly what I wanted, so some clarifications: The CPU ...
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28 views

ESP32 WIFI and BLE power status

Regarding the esp32, I am wanting to understand a couple of things related to both wifi and ble power control. 1.) How can I do a status check on whether both the ble and wifi radios are powered/...
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ESP8266 and Public WiFi

Can I use C++ and an ESP8266 to connect to a public wifi network that requires user acknowledgement of terms and conditions? Acknowledgement is typically a checkbox or submit-type button. Any ...
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39 views

Is there an Arduino library that uses ARP to get list of connected devices on network?

I have been looking for a library that can execute an ARP (Address Resolution Protocol) command to return a list of connected devices on the network. The idea is that it would send the request to the ...
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29 views

Long range wireless RC airplane control

I pretty new to Arduino and I need help to clarify some things. First, I want to make an Arduino controlled RC airplane but I don't know what communication module to use. I did some research and ...
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Unable to get input from Wemos D1 PIR sensor

I am using the script below to create a motion sensor using a Wemos D1 and a PIR sensor. I'm using the ESP8266 Community board manager (V2.6.3). THE PROBLEM When I use the Wemos D1 R1 board no ...
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64 views

esp32 arduino wifi disconnect

I have this code running on ESP32 connected to SVM30-J #include <WiFi.h> #include <PubSubClient.h> #include <Arduino_JSON.h> #include <svm30.h> // Replace the next variables ...
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Not able to run mysql query but able to connect using mysql library from wemos d1 mini

I have a very simple code trying to insert data to mysql server from wemos D1 R1, I am able to connect to mysql server, but not able to insert data or even select anything. #include <ESP8266WiFi....
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ESP8266 keeps restarting after a few hours of use and dead after 1 month of use

I have tried to make a water heater relay controlled by an ESP8266 (NodeMCU v1.0). The ESP8266 is connected to a central WiFi in my house, the ESP8266 also has its own WiFi so I use STA and AP mode ...
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Uno Wifi rev2 - SSL socket connection

On Arduino Uno Wifi rev2 I want to create an SSL socket to my own SSL socket server implementation. The board can download a webpage with encryption (after I've installed the certificate into it of ...
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31 views

I need to Get my changed SSID and Password in my Serial monitor

I have this(Wifi Manager - Autoconnect IP) program run in my arduino IDE. And I get the output in serial monitor as this Can Anyone help me in displaying my SSID and PASS in this serial monitor ...
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34 views

ESP8266 Connection with WPA2-PEAP Enterprise Network

I am trying to connect my nodemcu 12E module to WPA2-entrprise network but not able to connect. I had gone through the Espressif Forum and GitHub but still not able to resolve my problem. here is ...
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38 views

ESEP8266 using WiFi Manager doesn't connect when re-entering WiFi range

I'm able to connect to WiFi through WiFi manager, but when it leaves the WiFi range it enters AP mode. If I bring it back into the WiFi range a couple hours later, it is staying in AP mode and not ...
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48 views

Make OTA work with Arduino Uno Wifi

I just bought a Arduino Uni Wifi Rev. 2, with the itention of doing over the air uploads to the devices. By reading the official Gettings started with the Arduino Uno Wifi guide, I thought the ...
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26 views

Constantly getting RC=-2 error with Arduino Mega and ESP8266 as the wifi module for MQTT

I am trying to use the ESP8266 as the wifi module. My connections are as follows: ESP8266 <-----------------> Arduino Mega VCC ------------------> 3.3V (converted 5V from Mega to 3.3V ...
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43 views

What kind of antenna should i use for my esp8266 module?

I have an esp8266 module and i want to increase its range by adding an antenna to it. What kind of antena should i use. Can i use an antenna from a RC car remote?
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57 views

ESP8266 Loop cycle frequency gets decreased after WiFi got disabled

In a traditional scenario, after the setup() method we go to the loop() method of our sketch. You know, usually it gets executed probably 5-10 times in a second (or even more). I am now playing ...
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39 views

Timeout error with Arduino Mega and ESP8266 as the wifi module

I am trying to use the ESP8266 as the wifi module based on this tutorial. My connections are as follows: ESP8266 <-----------------> Arduino Mega VCC ------------------> 3.3V (converted ...
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1answer
21 views

command keeps echoing because web page tries refreshing

I want to execute a action only once when I press web page button but as the page tries refreshing the action gets executed in a loop. I am using the wifimanualwebserver example for esp8266. Please ...
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28 views

How to call a PHP script with Arduino?

I have Arduino Mega and ESP-12F module. Via AT commands I am on my wifi. Now, I need to call my script on my pages. Can you tell me how? This command can conenct to my pages: Serial3.print("AT+...
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60 views

ESP8266 WiFi doesn't reconnect

I've been reading this post while trying to optimize the usage of the WiFi module on my ESP8266. My main goal was to be able to connect/disconnect (respectively turn on/off) the WiFi module so I can ...
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46 views

Solar powered ESP8266. WiFi module usage optimizations

Above all, I am quite new to the ESP8266 and micro controllers development as a whole. I am now working on a project which is quite simple for now. It basically looks like this: As you can see, I ...
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49 views

WifiManager and WiFi functionally

I’m considering using wifiManager mostly to have the ability not to hard code WiFi creditntials. But In my current code I use WiFi’s functions as WiFi.setAutoReconnect(true) and WiFi.status() != ...
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34 views

Esp8266 + Atmega328p as flash

Being clear I'm not talking about How to flash ESP8266 using arduino. I want to ask how can I use atmega328p as flash with esp8266 (instead of that 8 pin small chip on ESP-01) so that I can burn ...
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69 views

ESP-01 + UNO won't detect gateway

Apparently, this combination of hardware won't accept anything other than WiFiEsp.h together with SoftwareSerial.h (if anyone knows something better/newer than these two, please let me know). Thing is:...
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NodeMcu does not connect to my wifi

this is the code , and it never connects to the wifi ,i dont know what to do , the code is an example in the blynk library
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40 views

test for wrong wifi password?

maybe this is a dumb question, but is there a way to test for wrong wifi password, I know you can do WL_CONNECT to check if the password works, but is there a command for checking if the password is ...
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23 views

Esp8266 esp01 kicks other devices off tplink router

I had an Esp8266 esp01 module programmed to log onto the router and post data. It worked fine for a few months but all of a sudden it kicks everyone else off the router. Actually as soon as I ...
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3answers
165 views

How can I connect 6 solenoid locks to an arduino

Im in college and our research is about a fingerprint based door lock system. We really dont have any idea about arduino. Now we bought arduino mega for our research but I dont know how to connect ...
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465 views

Reading Data from Google Sheets using Nodemcu

I want to read and writ data on Google sheets using ESP8266 WIfi Nodemcu and I'm able to do it but the time interval between two writing row is 3 seconds which is too much. I can read data but I am ...
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2answers
140 views

WiFi connection in loop function

What I am trying to do is while connected locally in the esp8266 and give it a ssid and password, save them in a global variable and use them to start a connection inside loop function with a flag so ...
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1answer
107 views

ESP32 WiFiClient request missing response

I am facing problem with ESP32. I use basic example for WiFiClient and making request to my server. The problem is that the response should be 15000 bytes long, but very often I got only 2750 or less. ...
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1answer
44 views

Stream video from camera to mobile and send control signal back from mobile to Arduino via WiFi

I want to make an Ardunio based project in which I want to stream live video from camera (which is connected to Arduino borad ) to my Android app via WiFi and send back actions/control signals from my ...
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40 views

How to implement server.on() without any libraries?

I was trying to setup a web server with Arduino and ESP32, without using the ESP32 libraries. Currently I'm able to display a webpage(a form with single submit button) from the server, with only using ...
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69 views

ESP32 + ArtNet stops responding

This is less of a FastLED specific issue and more ArtNet + ESP32, but I figure that this community has done enough of these types of things to be able to help. I have a simple sketch gluing together ...
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1k views

WebSocketsServer.h: No such file or directory

I'm trying use the NodeMCU WebSocket. I downloaded the required libraries from: https://github.com/Links2004/arduinoWebSockets and pasted them in my Arduino libraries folder. I uploaded my code but ...
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69 views

Can't print out a field with ArduinoJSON

I'm trying to create a command interpreter. Allowed commands are stored in a JSON document inside SPIFFS. If I send an allowed command, it doesn't print the field associated with that value (end of ...
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1answer
237 views

Multiple WiFi client/server connections

I'm implementing a WiFi HTML web server using the WiFiNINA library, an Adafruit Airlift ESP32 coprocessor, and a Teensy 3.5. It's starting to work, but I have a couple of questions. This simplified ...
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131 views

ESP8266 WiFi.begin() isn't working

I did a project for IoT attendance system using ESP8266 and RDM6300. However, I can connect to wifi using WiFiMulti.addAP() function for my home WiFi. I tried WiFi.begin() instead of WiFiMulti.addAP(...
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39 views

Running out of GPIO & looking for suggestions

I'm working on a project using a NodeMCU and am quickly running out of GPIO pins. I'm trying to decide which way to go to complete it. Right now, I have the MCU connected to a MAX31856 PT100 ...
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265 views

Data logging from ESP32 through UDP socket to PC

The idea is to send raw sensor data from ESP32 to PC through WIFI UDP socket and store it into CSV file using Python. As you can see from the code I am chopping 8 bytes of data into single bytes and ...
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47 views

Problem with multi-client ASCII text parser (TCP)

I have been having a heck of a time getting my Arduino Uno Rev2 application to work as intended, which is to parse commands from multiple clients sending in ASCII-based commands over WiFi in order to ...
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1answer
29 views

strcat parameters throwing pointer errors in my tcp server / parser application

I am attempting to use an Arduino Uno WiFi Rev2 board to integrate some lonely data. I will use the NINA WiFi chipset and associated libraries to start a server that will periodically request and ...
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1answer
247 views

Error Compiling sketch for Arduino Uno(ld return 1)

I have got an telnet server with esp8266 + SoftwareSerial+ UNO, and here I want to on led with command ON . will be 1 or 2. It is for recive 1 or 2 numbered pins. And I extract pin from request with ...
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35 views

Why sometimes parsed data is null in WiFiEsp?

I'm setting up web server with args. As host.com/?pin=9. I parsed the response by indexOf and substring functions. In first connection response has been successfully parsed and number has been parsed ...
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49 views

How to use ESPAsyncWebServer with SoftwareSerial communicating ESP01f

I'm creating a web server with using host.com/?ll="some". But I read that I can use for it ESPAsyncWebServer for this things. And how can I use it without flashing esp? If possible give me link to the ...
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1answer
228 views

Parsing HTML GET request with params with WiFiEsp

So I'm Setting up webserver with esp-01f+arduino uno. I'm using WiFiEsp library. I want to toggle led on. Pin will be given in GET request by url. Example: host.com/?ledpin=9 How can I parse it, ...
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27 views

Node mcu does not connect

im trying to connect to my wifi with mit Nodemcu, i recently got a new router and since then i can't connect anymore. I use simple example sketches from esp library but it will not connect. Instead i ...
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283 views

TIMEOUT error when connecting ESP8266 to Arduino Uno

I am trying to set up my Arduino Uno to receive information from the internet, but I am having a very hard time finding proper guides online. I am using an Arduino Uno and ESP8266-01. I am trying to ...
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894 views

ESP-NOW: Master and Slave at the same time

I am interested to use ESP-NOW as a means to transmit data between two ESP32's back and forth, - each ESP receives and sends data, taking turns. The example library provides an example sketch for ...