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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Arduino uno wifi r3 is not broadcasting its ssid [closed]

I've got an Arduino UNO + WiFi R3 board. I've left the dip switches in off position. When I connect power through usb, and try to scan available wifi networks, I expect to see ARDUINO-UNO-WIFI-*. But ...
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TimeZone time not returned with async webserver(nodemcu 1.0)

I am using following code to read data from 2 sensors and feed it to another unit over wifi(http async) with following code getTime function is not returning me correct time, any advice please? #...
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20 views

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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Getting Guru Meditation Error when Using Dallastemperature & OneWire and Wifi.h in the same time on esp32

I'm getting this error, when trying to use Wifi + DallasTemperature on my esp32. Temperature sensor is Gravity DS18B20. When I comment this line connectToWiFi(); it works fine. here is my code #...
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114 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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1answer
30 views

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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1answer
62 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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1answer
62 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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72 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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1answer
59 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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1answer
84 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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1answer
49 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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1answer
198 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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41 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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1answer
91 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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42 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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1answer
435 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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1answer
77 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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2answers
46 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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279 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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0answers
25 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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2answers
83 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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0answers
21 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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50 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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1answer
198 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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49 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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49 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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26 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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1answer
35 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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29 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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1answer
162 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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56 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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0answers
378 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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1answer
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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218 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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1answer
42 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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2answers
340 views

ESP8266 and Interrupts - not possible?

I'm planning to use an ESP8266 (Wemos D1 Mini) to use as a software SPI monitor to send over WiFi. As a test, I've done a cut-down sketch that just counts the interrupts, a simple frequency counter. I'...
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1answer
419 views

Wemos D1 mini won't connect to WiFi: status code 6

So I have a Wemos D1 mini which I want to connect to my WiFI in order to let is push sensor data to my server. But I cannot connect it with my WiFi as I get a code 6. // We start by connecting to a ...
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2answers
327 views

Arduino nano IoT antenna broke

I have an Arduino Nano 33 IoT and have used it for a good time now. I was using it when the antenna snapped off. Is there any way to fix it by either an external antenna or some other method? I tried ...
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1answer
53 views

Send commands from cPanel website to client ESP8266

I have a project where I want to remotely turn on and off a relay using an Arduino,(ESP8266) over the internet. I have a remote web server that hosts my existing hobby website, cPanel hosted by ...
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1answer
160 views

What is the best way to init wifi communication between two devices (get IP address)?

what is the best way to init wifi communication between two devices without knowing IP of second device, let's say Raspberry Pi and ESP8266? I want to build simple home automation system for my ...
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1answer
778 views

Arduino Library to make http post request with bearer authentication

I want to make an Http Post request with Bearer Authentication to my api using my Arduino Mkr Wifi 1010, but I couldn't find the appropriate library to do something like this (code generated with one ...
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2answers
308 views

Arduino Serial Monitor displaying weird characters and changes spelling

I am recieving the following in my serial monitor. There is a mix of wierd characters then the spelling changes for words once it gets repeated. I don't know why its doing this. my esp01 chip uses ...
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Uno Wifi Rev2 - sending program via WIFI [duplicate]

My new Uno wifi rev2 just arrived and I have one problem. At the beggining I connected my board via USB and tested with example blink program from WifiNiNA and It worked fine. When program is runned ...
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1answer
36 views

ESP32 and wifi router

I connected my ESP32 to Wifi and I can see this in my Wireless Statistics: ID | MAC Address |Current Status| Packets Received | Packets Sent | SSID 1 | 3C: 71: BF: 0D: CB: 00 | Connected ...
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1answer
32 views

I want to make two arduino to communicate over different wifi. Is that possible?

I want to make any 2 Arduino module from different places to communicate over wifi. I really need to know if it possible? If yes, advice me more about it. I want send data from sensor module from one ...
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2answers
850 views

Is 1MB flash enough for OTA upload in ESP-01?

I'am asking this question, because in my ESP-01 OTA upload always fail. In fact update won't even start. When update was triggered esp wifi led(build in blue) indicates "working" , but after ...
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3answers
808 views

ESP8266 WiFi Not Connecting to Internet Without Static IP

I am seeing some very strange behavior with my ESP8266. When I connect it to the WiFi for the first couple of times I am not seeing any issues and the ESP8266 connects just fine. But after an ...
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0answers
77 views

Is it possible to use CCMP as cipher type on ESP32's softAP mode?

Currently I'm starting softAP mode on ESP32 with WPA2_PSK as auth type(as WPA3 is not supported for softAP). When I am trying to connect my iPhone to the softAP, iOS gives a warning that WiFi security ...
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45 views

AT Commands ESP8266 Arduino IDE serial monitor not print any data from server. It say 408 request timeout

i am new in arduino and ESP8266 module. I am still learning about AT command. But i found this problem: 1.My website code (index.html)-http://nyalalampu.atwebpages.com: <html> <body> <?...

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