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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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Can't use Bluetooth or WiFi on ESP32

I'm looking for a solution to a problem with my ESP32. I used the Arduino IDE's BluetoothSerial sample code and uploaded it to my ESP32. However, it seems that the code does not run, and the ESP32 ...
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-1 votes
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38 views

What ways are there for wifi provisioning with ESP8266?

I'm creating a project where a flutter app controls an ESP8266. For this the ESP8266 needs to connect to the wifi network without hard coding the credentials - preferably through the flutter app. My ...
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0 answers
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ESP32 not connecting to WiFi

basically im trying to deploy a web server in my ESP32 DevKit V1 but as you can see in Serial Monitor it always spamming "..........." infinitely. according to one comment there the problem ...
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3 votes
1 answer
88 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 ...
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0 answers
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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 ...
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0 answers
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ESP32 ADC <-> WIFI Issue

I'm Using ESP32 ADC1 (not ADC2 that conflicts with Wi-Fi functionality) to capture some analog data received @IO36 (an ADC1 port). As soon as I uncomment WiFi.mode(WIFI_AP_STA) line (even when WiFi....
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  • 135
1 vote
1 answer
62 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 ...
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2 votes
1 answer
125 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 ...
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1 vote
1 answer
44 views

ESP8266 Pulling Credentials from SD makes esp unable to connect

I'm trying to set up a wifi SD server and i want to put the wifi credentials in a config.txt file on the sd. The entire code works fine. when i dont use the sd credentials but when i do i run into ...
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2 votes
0 answers
130 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 ...
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1 vote
1 answer
50 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 ...
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  • 129
-1 votes
2 answers
192 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 ...
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  • 143
1 vote
0 answers
379 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 ...
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2 votes
1 answer
101 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 ...
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1 vote
0 answers
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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
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  • 111
2 votes
0 answers
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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 ...
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1 vote
1 answer
97 views

ESP32 TCP disconnect takes very long to be recognized

I'm using the following class to create a stream from a WiFi (server) connection. The client (a PC application) connects to the ESP32 and then issues commands over this connection. This works fine. ...
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0 votes
1 answer
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ESP32 AP Automatic Web Page

I've often encountered WiFi networks that require you to sign in through a web page that automatically opens after connecting to the access point, such as hotels. I'd like to implement something ...
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1 vote
2 answers
136 views

How Much mA dropped in ESP8266-01 Work in LiPo Battery if the WIFI function is continuously on

I working on the system where ESP8266-01 should continuously on because I want to get the Wi-Fi function on. In that case ,I can't use the Sleep mode which is given in the Esp8266-01 . So, My Question ...
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1 vote
1 answer
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WiFi.h library, Issues with client.print()

I have an esp32 development board that I am trying to use to get Bitcoin price data using the Coinbase api. On the Coinbase developers website, they give this example Curl command to get Bitcoin price ...
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1 vote
1 answer
90 views

How do I check if my board is connected to the internet?

Let me get this straight, I'm trying to see my ESP32 is connected to the internet or not, not Wi-Fi, as at times the board is able to connect to Wi-Fi, but not able to contact any servers, due to ...
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  • 452
2 votes
1 answer
63 views

ESP32 powered for atleast a year

How to power esp32 board this one with soil humidity sensor that sends data to server via wifi every 30 minutes for something around a year on battery? What battery type and capacity should I use for ...
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  • 305
1 vote
0 answers
240 views

Bluetooth module with lowest latency to communicate with PC

I am making a haptic feedback glove using Arduino and HC-05 bluetooth module to communicate with PC. There are rotary encoders on the finger which send value to PC through Arduino mega. The PC returns ...
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  • 11
1 vote
1 answer
80 views

Unwanted Wi-Fi Jamming by ESP8266

I bought an ESP8266-01 module. I attempted to upload following code onto it. void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code ...
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0 votes
1 answer
416 views

Analog read not working while using WiFi

I have an ESP32, the current program running on it uses WiFi but, if I use WiFi and Analog read at the same time, Analog read does not work. Why does this happen and what's the way around it? Hardware ...
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  • 452
0 votes
1 answer
64 views

Send Request With NODEMCU When A Key Press

Hi there I want to send a request to the server with get method with URL parameters, when a key is pressed with nodemcu. But I Can't Do This Work, I Got the Below Error From Serial Monitor: I Get This ...
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1 vote
1 answer
670 views

How to get current WiFi signal strength?

I have a LCD display where in I'm displaying a WiFi signal logo. I want to reduce the number of bars on the logo, indicating that the signal strength is dropping. I got the reducing bars on the LCD ...
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  • 452
1 vote
0 answers
98 views

Is it possible to upload a private root certificate to an Arduino Nano33?

I'm trying to connect an Arduino Nano 33 to an mqtt broker with TLS authenticaton on the broker side. To do that I need my Arduino board to have access to the the root certificate. My understanding is ...
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2 votes
1 answer
125 views

How to attempt connection to WiFi only once?

I am working on a garden timer project, I connect to WiFi once and if its successful show time from NTPClient or else show time from RTC. I have been done the above, and it works in the sense that if ...
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  • 452
1 vote
0 answers
124 views

ESP8266 Webserver does not respond

I am trying to reach the webserver running in my Wemos D1 Mini compatible board. I am trying one esp8266 example using Arduino examples "WifiManualServer" code below. I have replaced the SSI ...
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0 votes
1 answer
1k views

Blynk, but continue program if Blynk connection fails

I'm having an issue with Blynk.begin(auth, ssid, pass); The problem is, when it fails to connect to the wifi, the rest of the program does not continue. I'm using a Wemos D1 and it is also controlling ...
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0 votes
1 answer
149 views

ESP32 FREERTOS crash using Adafruit ST7789 in tasks with the Wifi enabled

I am trying to create a clock using a ST7789 display and a DS3231 RTC. In this clock I want to use NTP to keep it synced and maybe use the WiFi to anything else. My problem started when I have tried ...
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2 votes
2 answers
61 views

TTGO TS I²C adress

I'm working on a project using TTGO TS wich communicate wih arduino via I²C protocole How can I find the adress of TTGO TS board used in I²C communication ?
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  • 21
3 votes
0 answers
718 views

Using or creating Wi-Fi Direct (P2P) connection on ESP8266

I want to make a Wi-Fi Direct connection with an android device using my ESP8266. According to ESP8266WiFi Documentation and ESP8266 datasheet, the board has a SoftAP mode which is I think what is ...
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2 votes
0 answers
39 views

Problem displaying data sent from Arduino Mega to Arduino Mrk1000 using serial communications

I've been doing a personal project. The idea of the bigger project is to feed my fish using a robot. My specific problem is that I would like to see some data from the various sensors that I will be ...
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1 vote
2 answers
133 views

Arduino UNO with integrated ESP2866 wifi not working correctly

I bought this "knockoff" Arduino UNO with an integrated ESP 2866 wifi module. But I can't make it work. I've followed this tutorial because it's the same product as I have, but I can't make ...
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  • 305
1 vote
0 answers
27 views

ESP32 reading analog 2.4Ghz

Is there a possibility to analog read on the 2.4Ghz band to just read how much activity is in the presence of your device? Not parsing the messages but just listening to how strong of a signal you are ...
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  • 49
1 vote
0 answers
88 views

AT command AT+CWJAP command always fail when connect to wifi

Refer to connect to wifi from https://www.cooking-hacks.com/mysignals-hw-ehealth-medical-biometric-iot-platform-arduino-tutorial.html #include <MySignals.h> #include "Wire.h" #...
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0 votes
1 answer
440 views

WiFiManager - Combine NonBlocking portal AND addParameter

I wish to config WiFiManager and addParameter of MQTT topic and local server on its ConfigPortal. Additionally in a case of a power outage or any, in case of losing WiFi, to continue in a NonBlocking ...
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1 vote
0 answers
104 views

ESP32 Post Request Not Working

This sample code for the esp32 doesn't work. When contacting the website I get a 301 error and the website acts as if nothing was ever recieved. Note: Been using arduino for 2 years. /* Rui Santos ...
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1 vote
0 answers
91 views

nodemcu POST request over https return error code -1

I have a nodejs application deployed and have been trying to send data to the api using the following sketch on my nodemcu: #include <ESP8266HTTPClient.h> #include <ESP8266WiFi.h> void ...
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  • 111
1 vote
0 answers
53 views

ESP-01 doesn't seems to send any data over serial once it is connected to the wifi router

how are you?. I'm using an ESP-01 with platformIO wich is programmed using esptool.py to run an example of a web server that I found in a book called "NodeMCU ESP8266 Communication Methods and ...
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  • 11
1 vote
1 answer
38 views

Elements excluded from buffer array output after given structure (ESP8266 WifiSniffer) (snifferPacket)

I am currently trying to determine how the ESP8266 WifiSniffer program by Kalanda works. Here is the source code: #include <Arduino.h> extern "C" { #include <user_interface.h> ...
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1 vote
0 answers
52 views

ESP8366: ets Jan 8 2013,rst cause:4, boot mode:(1,7)

I am trying to control esp8266 esp 01 with Alexa This is my code: #include <Arduino.h> #include <ESP8266WiFi.h> #include "fauxmoESP.h" #define ssid "admin" #define ...
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0 votes
1 answer
345 views

How to change ArduinoOTA upload timeout?

I'm using ESP8266WiFiMulti, ESP8266WebServer and ArduinoOTA to communicate with my device and perform over-the-air-updates. Everything was working perfectly until I moved the ESP8266 further from the ...
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  • 105
0 votes
0 answers
108 views

Help with ESP32-CAM "AI THINKER" module

I'm trying to make a RC car (with a surveillance camera if possible, using the web-cam code that comes with the ESP library) using a ESP-32 CAM as a wifi module to control the car using my computer. ...
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2 votes
0 answers
900 views

Node MCU code is stuck in while (WiFi.status() != WL_CONNECTED) [closed]

I am using the Node MCu V3 board ESP8266MOD Board Manager Version: 2.7.4 Arduino IDE: 1.8.12 My code is stuck in the while (WiFi.status() != WL_CONNECTED) Here is code: #include <ESP8266WiFi.h> ...
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0 votes
1 answer
41 views

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 ...
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  • 201
1 vote
0 answers
378 views

WiFi101 vs WiFININA - reliability issues

I've got the same code running on 2 different boards: MKR1010 Adafruit Feather M0 I'm using WiFiNINA on the former, and WiFi101 on the latter. Other than that, the code that's exactly the same: ...
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0 votes
1 answer
47 views

What are the Arduino hardware options for experimenting with IoT?

Just starting to learn about Arduino and IoT. I'd like to know what the Arduino hardware options are to try the following: Use FreeRTOS as SO WI-FI and BLE connectivity Solderless board Test OTA ...
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