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Questions tagged [esp8266wifi]

151 questions
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In firebase, how to create a user and add data in user object from ESP 8266?

I'm working with some IoT projects and for handling all data I have used Blynk application but now I have created my own app but problem is that I want to add sensor data to firebase, but I have multiple users that's why I want to separate my data…
Jaydip Pawar
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NodeMCU not getting detected by Windows10

my NodeMCU (ESP8266) V3 is not getting detected by my windows 10 nothing happens when i attach the usb with it not even a blink of led or sound on windows that detects a device and it doesn't appear on device manager also it says to install CH340G…
BeastsThrash
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WiFiClient arduino isn't returning what I expect from a php webpage

I have a very simple php web page that simply does "echo 0". When you type in the correct address, all you see is 0 on the page. So this is fine. I am trying to activate this php page with my arduino code and get this "0" from the site, however it…
Justin Oberle
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extract post values from http request using C

I'm trying to extract POST fields data from this: POST / HTTP/1.1 Host: 192.168.4.1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0 Accept:…
Itzik.B
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ESP8266 WiFiClientSecure Exception 9

I have a few problems trying to connect my ESP8266 to my WebServer. I want to connect to a Webserver and then send Information via the REST-API to the Server. Unfortually my Program Crashes when connecting to the Server. This is my code: #include…
Patrick Langkau
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Wemos D1 mini (esp8266 12-F) does not respond to AT commands

I have been working for some months with these modules, but I have some major issues about them that I have never learned how to deal with. Sometimes, my modules stop responding (I don't know the reason) so I flashed the firmware and everything…
19Miquel
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How does Arduino Ethernet library handle reconnections

I would like to find out if the standard Arduino Ethernet library handles possible re-connections automatically like ESP8266WiFi library does with wifi. If for some reason the Ethernet connection, that has been established with Ethernet.begin(mac,…
thermike
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ESP8266 suddenly stopped connecting to java server

I have a java program on a computer that is the server and a program on the esp that acts as a client. They both connect to the local wifi and then to each other. The purpose is to have the computer send a number to the esp. I had managed to make…
Fabio Bonazza
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ESP8266 Captive Portal and jump to "normal" Browser

I like to run some esp8288 with some custemizing or controles in AP mode. To make it easyer to use I like to use the captive portal function to make the access easyer for the user. So the after connecting the captive portal will pop up e.g. on…
J.Arnold
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delay in .connect() function while using ESP8266 with arduino

I'm using ESP8266-7 as the only micocontroller in my project and I have a tiny problem with it. there are sometimes that the internet line is broken and my ESP tries to reconnect to the broker. while this happens, the program freezes until the…
M.Navidi
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How to initialise wifi module to Arduino. ESP8266

I'm working on a Arduino project found online but I'm having trouble with the configuration of the wifi module. Im using a Az Delivery ESP8266 wifi module and the code I have written is the following #define SSID "SSID" //replace XXXXX by your…
MKK
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nodemcu esp8266 http request returns -1 " connection Fails "

I tried to Run this code but the connection fails and HTTPCode returns -1 , I'm using WIFI manager and it works sucessfully connected to the network the link is worked successfully on POSTman and data posted in Database Hi All, I tried to Run this…
GNT_Textile Ranya
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Not able to send data from nodeMCU-8266 to localhost (database)

When I try to send data from nodemcu it shows -1, refer bellow image [serial monitor][1] [1]: https://i.stack.imgur.com/3IokX.jpg you can see my ip address [ip address][2] [2]: https://i.stack.imgur.com/srNo1.jpg my post code
Omar Hassan
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Connecting to a MySQL database with an ESP8266WiFi chip

I'm trying to connect to a remote MySQL database directly from my arduino to do some telemetry on some hardware. However the code gets stuck while connecting to the db, and gives always the answer "no db found". Where am I wrong? I'm sure that I'm…
Dhelio
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ESP 12E Module ESP8266 | Unable to call Https Api. Connection Failed

I tried everything but every time I am getting "Connection Failed" for client.connect. I have used https://gorest.co.in/public-api/user/123 Used the fingerprints well. Using ESP-12E Module Any pointer will be of great help Fingerprint I have copied…
Ravi Gupta
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