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Questions tagged [esp8266wifi]

151 questions
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Is it possible to get values from page index?

I want to make a simple project using ESP8266 and led strip ws2812, and I want to control it from web page. Is it possible to get variables from page index ? Right now I have only simple code to turn on/off it. After enter:…
Krzychu Jędrusiak
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Library Error: "Multiple libraries were found for" Error for NodeMCU1.0 ESP-12E module with only used library seen

Here is the Code and the Error message, the code is just a testing file before I work with the code, and when I import just the Keypad.h and Keypad_I2C.h, It worked fine, also work when I only import ESP8266WiFi.h. When I tried only importing one of…
AOV Ezy
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How to add alexa support for esp8266 with my brand configuration?

I want a complete solution to develop my own Alexa skill and firmware for my IOT work on ESP8266. Over the internet i am seeing that we can emulate the device as Philips or Belkins (fauxmoesp). But i want to develop something for my own brand. Do i…
Manoj Patel
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ESP8266 NodeMCU can't send TCP commands - same code works on Arduino Uno?

I'm a noob at this, so hopefully a stupidly obvious one. I'm trying to create a simple temperature/humidity sensor that takes readings from a DHT22 and uses an ESP8266 to ping them to Thingspeak's API to then graph out/store etc. I've pasted code…
Alphatester77
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How to connect Ardunio ESP8266 wifi server with asp.net application

I want to develop asp.net application then can send data to ESP8266 which will be act as to show that message. What I have done, I have fully function Esp8266 board which show Ip address it is connect and any message which can be send from this web…
Sajid Hussain
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send data collected on the internet instead of on the serial monitor (Nodemcu v3)

Good evening, I am working on a project on a brightness sensor (tsl2561). Not having arrived yet I used a photoresistor and a led and everything works perfectly. Practically, depending on the light seen by the photoresistor, the LED light is more…
Ludo23
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Unable to do https POST request from ESP8266

We are trying to make an HTTPS POST request from ESP8266 to aws cloud but unable to communicate to the server. The code snippet is given below: WiFiClientSecure client; char data[100]; DynamicJsonBuffer jsonBuffer; char host[] =…
Süresh AK
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Couldn't send/recieve POST DATA REQUEST between ESP8266 (NodeMCU) and PHP live server

I want to connect my NODEMCU wifi module to live server and then comunicate with rest API. While I was calling simple GET method with plain-text content then everything works fine, problem arises while calling POST and JSON data. Though my server…
Sourav Das
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Flashed the ESP-01S to new firmware, now can't send any AT commands

I've have been trying to flash the ESP-01S to the 1.5.1 from the official website. I am also using their own flash tool. The tool detects the component and completes the update all the time, this is what it detects: 5Eh : N/A flash…
Ajay Varghese
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Blynk notification with ultrasonic sensor

This is my code which actually send blynk notification when distance is greater than 150. but its output is very weird. It again and again run setup function instead of only once. The esp8266 device goes online and offline and then again online due…
HinaKhadim
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Take json string from ESP8266WiFi, and save it as a string variable in NodeJS to write a CSV file

I want to take a JSON string of DHT22 sensor value (temperature and humidity) from this ESP8266WiFi through WiFi. #include //library DHT.h #include #define DHTPIN 14 // GPIO14 #define DHTTYPE DHT22 // DHT 22…
Chakrit Hinanawi Teerawijit
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can't setup SSL connection even though it appears to connect with NodeMCU ESP8266 to AWS

I'm trying to connect a NodeMCU ESP8266 and upload a shadow. I am following the tutorial from IoT Design Pro. When i first ran it, I did see the shadow updated on AWS. On subsequent loops, it stopped updating. Now i get a message "can't setup SSL…
DanG
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AT+CIPSENDEX returns link is not valid

i am using ESP8266 and STM32F4. My problem is; when i try to send AT+CIPSEND command i see an error: link is not valid. i didn't post the huart2 initialization because other commands work, properly. i send AT then code goes to USART2_IRQHandler here…
Resul
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differents between WiFi.mode() and wifi_set_opmode()?

What's the difference between WiFi.mode() and wifi set opmode() on esp8266?
user10997039
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esp8266 websocket server and sodcket.io client in angular 7

I am using esp8266 to run my websocket server and angular 7 to run socket.io to run websocket client. When I run the angular application. The logs in Arduino shows Disconnected!. I am not sure what is causing this. following is the angular side code…
Omkar Yadav
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