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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How to connect Arduino to WiFi by providing network details through an app (Flutter)?
I have an Arduino Nano 33 BLE Sense which has Bluetooth and WiFi. I'm building an app which controls an actuator. For simplicity let's say I'm choosing which LED to turn on and how long for by setting ...
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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 ...
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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 ...
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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 &...
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ESP32 Async Web Server hanging / queue
I was hoping someone might be able to help me with a project I'm working on. The general set-up is as follows:
I have an ESP32 hosting a WiFi server and publishing data from a bunch of sensors.
// ...
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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?
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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 ...
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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 ...
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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/...
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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 ...
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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 ...
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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 ...
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Problem with uploading sketch with Arduino droid on Arduino Yun
Good morning
I'm trying to upload a sketch on arduino yun by ArduinoDroid. I've tried both with the internal network of the yun and by putting the board on the home network SorboFrale.
I'm able to ...
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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 ...
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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 ...
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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 (...
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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 &...
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233
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ESP32 http_parser.h error 'HTTP_PATCH' conflicts with a previous declaration
#include <Arduino.h>
#include <WiFi.h>
#include <AsyncTCP.h>
#include <HTTPClient.h>
#include <ESPAsyncWebServer.h>
#include <DallasTemperature.h>
#include <...
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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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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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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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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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1
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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515
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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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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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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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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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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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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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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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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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1
answer
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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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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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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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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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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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234
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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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