Questions tagged [esp8266]

An IC that offers Wi-Fi networking compatible with b/g/n standards. It also has integrated TCP/IP protocol stack. Extremely popular along IoT community as a low cost and powerful board.

536 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1
vote
0answers
129 views

Send data to API from Arduino with ESP8285 Strange Error

I have an Arduino with few sensors, and I want to send all of data to my API over ESP8285 what is connected to the wifi. Its almost working fine, except one thing. I have these AT commands: String ...
1
vote
0answers
45 views

Unable to interface using Softserial with ESP8266 and Arduino uno

I am trying to use a ESP8266 in an Arduino project, but I'm unable to get the basic Software serial interface working with it. I have the ESP connected to a secondary 3.3v power supply. When ...
1
vote
0answers
18 views

nodeMCU - when DC is active on pin the do this

i have a nodeMCU v3(esp8266) and what i want is: when i send DC 5v or 3v to a pin=D1 (idk if its possible to send 5v directly to pin) then to activate the D0 for 20Seconds like this: if (D1==Sends ...
1
vote
0answers
152 views

Can't POST data with Arduino and ESP8266

I'm having problems with my Arduino UNO and the ESP8266 module. I need to send values from Arduino to my PHP web page in this way: http://www.server.com/km/db.php?id=53 the ESP8266 module is working ...
1
vote
0answers
289 views

Problem interfacing both esp8266 and EM18 with Arduino Uno

I have connected esp8266 with Arduino Uno and programmed 8266 with Arduino IDE to send data to firebase over WiFi. Now I also want to interface EM18 RFID Reader with Arduino in order to read the RFID ...
1
vote
0answers
128 views

ESP8266 crashes when button is pressed

I'm building a wireless QLab Go button based on an ESP8266-01. There is a web UI to connect to a wireless network and setup the IP address of the computer running QLab. When a button is pressed, the ...
1
vote
0answers
231 views

error for uploading code to esp8266 module

I am getting error for uploading code to esp8266 module. I have installed cp2109 drivers also but at the time of uploading getting follwing error message: Sketch uses 344,292 bytes (32%) of program ...
1
vote
0answers
301 views

ESP8266 BearSSL performance

I am playing with a minimal https server on an ESP01S, using BearSSL::ESP8266WebServerSecure. With 2048bit RSA keys it takes ~5 seconds to serve a "hello" request. Using 256bit EC keys it takes ~2 ...
1
vote
0answers
39 views

How to send data to PC/app from sensors connected to Arduino

I want to send data in real-time from the sensors connected to my Arduino project to my PC or Android app. I would like see any real-time changes detected by the sensors as a graph on the PC or inside ...
1
vote
0answers
129 views

Error while compiling CODE

Hey guys I have run my example with esp8266 2.4.2 version now I'm getting following error while compiling- C:\Users\Shree\Desktop\FirebaseDemo_ESP8266ex\FirebaseDemo_ESP8266ex.ino:21:29: fatal error: ...
1
vote
0answers
422 views

facing issue while compiling code

This following error message I am getting while compiling: Arduino: 1.6.8 (Windows 7), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled, 4M (no SPIFFS), v2 Lower Memory, Disabled, None, ...
1
vote
0answers
321 views

Interfacing ESP8266 with Wi-Fi enabled GSM/GPRS Module

I need to send Data over the internet from a location where there is no internet hot spot, but there is a mobile network coverage. I need a to interface my ESP8266 with some GPRS/GSM board, that has a ...
1
vote
0answers
2k views

How to do a HTTPS post on ESP8266

I am trying to do a HTTPS post on ESP8266 as shown in Postman below But I keep getting: 'HTTP/1.1 401 Unauthorized'. Can someone please help me with how to build up the headers correctly in the ...
1
vote
0answers
47 views

ESP 8266 serial error

I am using an ESP8266 board and I had it plugged in to my computer via usb. I reached accross the board to press the reset button, and it felt like my finger got stung. The best I can figure, I ...
1
vote
0answers
367 views

Can't parse large json file

For a project I've to parse a big json file. Unfortunately it does not work as expected. Here is the json file: { "data1": "...
1
vote
0answers
359 views

ESP8266 /ESP12F use flash button as input without using loop()

I couldn't find a proper answer anywhere on internet. I want to use the FLASH button as input in the setup() function and do not use the loop() with deepsleep mode (this part comes later). I tried ...
1
vote
0answers
582 views

Can someone help me to change this code to u8g2

I would like to change this clock to u8g2. It works fine with the esp8266 and oled 128x64. I would start by including the u8g2 library with #include and all display. with u8g2. replace. What else ...
1
vote
0answers
113 views

client.connect() failing unless I ping my ESP

[EDIT] it seems like this has to do with my laptop's firewall settings rather than anything wrong with the ESP8266 [/EDIT] I have a webserver on my laptop. When I do this on my ESP8266 (after the ...
1
vote
0answers
482 views

Cant get rid of Soft WDT reset using ESP8266

Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly but after while i always get a watchdog timer reset. (If ...
1
vote
0answers
169 views

Flame sensor and MQ2 sensor not working with Esp8266?

When ever flame is detected sms will be send this is what i am doing,but the flame and smoke sensor works awesome when they are tested seperately(Without Esp8266) when they are integrated with ...
1
vote
0answers
551 views

what is this ets Jan 8 2013,rst cause:4, boot mode:(1,7)

i dont have any idea about this problem. can anyone help me how to fix this? #include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <...
1
vote
0answers
62 views

In what mode does the Esp8266 and flame sensor code has to be executed?

I had executed Esp8266 code by changing the board to "ESP8266 Generic Board".I have also executed the Flame and smoke sensor by "Arduino Genuino/Uno".Now how should i integrate those two?Which board ...
1
vote
0answers
195 views

ESP8266 WiFiClient Slow Over LocalHost

Appears to be something to with Apache configuration, swapping to Nginx solved my issue. I'm getting slow responses when using localhost with a NODEMCU 1.0 and esp8266 WiFi library. If I GET a PHP ...
1
vote
0answers
73 views

Arduino UNO and ESP8266-01 Wi-Fi cutting out after few seconds

I followed this tutorial: https://www.youtube.com/watch?v=2cjufbgOBYo My serial output in Arduino editor is this: AT AT AT AT AT AT AT AT+RST ATE0 AT+CWMODE=2 AT+CWDHCP=0,1 AT+CWSAP="RemoteXY","...
1
vote
1answer
111 views

Data received by Arduino from ESP8266 01 Module is not complete

I am sending some data from ESP8266 01 module to Arduino. But the data received by Arduino is not complete. Below are the images of the output from ESP8266 01 module and Arduino. Here is the ...
1
vote
0answers
53 views

Wire doesn't work between Uno & ESP32S & ESP8266

I think i've reached my limit. I can't get Wire to work between an Uno or ESP8266 or ESP32S. On the Uno I had them connected like SDA via Uno SDA -> ESP32 GPIO21 SCL via Uno SCL -> ESP32 GPIO22. I ...
1
vote
0answers
659 views

MPU9250 and ESP8266 are not working together with Arduino Uno

I am trying to send IMU sensor data via WiFi using ESP8266. Both MPU9250 and ESP8266 worked individually with 3.3 V when tested, but are not working when interfaced together. I am not sure what the ...
1
vote
0answers
165 views

Why is this Code not working with Esp8266 when it worked perfectly with Arduino Uno?

I'm making an attendance System using an RFID scanner, scanning RFID Card & saving Data in Excel. When I used this code with Arduino Uno (by changing #define SS_PIN 12 and#define RST_PIN 9) it ...
1
vote
0answers
141 views

I can't send GPS data to server

I am trying to send gps location data every 3 seconds to mqtt server if it's updated but my device shows weird stack errors and resets. What i am missing? I am using tinygps++ and pubsubclient as ...
1
vote
0answers
156 views

NodeMCU V3 - Troubleshooting basic TMP36 circuit

If I follow this example using my Arduino Uno https://learn.adafruit.com/tmp36-temperature-sensor/using-a-temp-sensor (using the 3.3V code example at the bottom of the page), I get reasonable ...
1
vote
0answers
376 views

OTA mDNS issues with ESP8266 and PlatformIO?

The common useage of the OTA library for this MCU is to have it connect to a network, and to then use a computer on that network to upload firmware across that network. Due to either issues with ...
1
vote
0answers
274 views

Real-time Pub/Sub thru MQTT between JoyStick and OnBoard Drive units [both ESP8266] - Connection issues

I looked around for solutions to my issue by searching on the forum and elsewhere and haven't seen similar issues - (https://arduino.stackexchange.com/search?page=2&tab=Relevance&q=MQTT%...
1
vote
0answers
176 views

Understanding flashing with bash in Ubuntu

I am following the instruction from this DIY tutorial to set up the firmware for my dust sensor on Arduino board (NodeMCU): https://luftdaten.info/en/construction-manual/#feinstaubsensor-konfiguration ...
1
vote
0answers
122 views

Arduino ESP8266 ESP-01S GET command

Looking for some help on this please. It is a little long winded, but the point of it is I cannot retrieve a string response via my ESP8266 ESP-01S. I connect my ESP to my Ardiuno using ...
1
vote
0answers
2k views

ESP8266 MQTT periodically disconnecting

I use an MQTT to communicate with an ESP8266. I'm using cloudmqtt.com and PubSubClient. Sometimes the ESP disconnects from the MQTT and reconnects. I checked the log from cloud and I got this data ...
1
vote
0answers
3k views

Serial Port not recognized by Arduino IDE

I’m attempting to connect with a Adafruit Huzzah Feather ESP8266 board. I’m running a 2018 mbp with Mojave. I loaded the Silabs driver (CP210) to connect with the onboard UART on Huzzah board. I got ...
1
vote
0answers
338 views

Trying to communicate data received with nRF24L01 module to API using ESP8266 in arduino UNO

I have been trying to push data into my API from Arduino UNO with ESP8266. The device connects to WiFi but fails in performing the data push after acquiring from remote sensor node with the nRF24L01 ...
1
vote
0answers
40 views

RF Rx with NodeMCU error

I am using RF Tx with Arduino Uno and Rx with NodeMCU. I use RF switch library. At the recipient side if I use an Arduino Uno MCU. I can receive the output, but with NodeMCU I have a blank serial ...
1
vote
0answers
4k views

Using SoftwareSerial on a Wemos D1 to get data from a GPS Shield

I am trying to use a Wemos D1 R2 to connect to my NEO-6M GPS module. I am able to make the module work fine with an Arduino UNO. I'm having significant trouble with the D1. Based upon other posts I ...
1
vote
0answers
34 views

ESP12e pin 13 won't set to output/won't work

I have an ESP12e and running a basic blink code on it. The problem is that GPIO13 of esp12e wont turn on. I have noticed that this has happened from time to time. Earlier I thought that the ESP was ...
1
vote
0answers
850 views

ESP8266 to send data to thingspeak while doing unblocked read on Serial.readString()

I have a requirement to get RFID data on Arduido UNO and send it to ESP8266 to be sent to ThingSpeak via the Wifi module. However, ESP8266 is also programmed to send Temperature and humidity data to ...
1
vote
0answers
373 views

ESP-13 WiFi shield - “error: espcomm_upload_mem failed”

I am creating a web server with Arduino and a ESP-13 WiFi shield. The wiring is as following: Arduino UNO || ESP-13 WiFi shield 5V || .5V GND || GND TX || RX RX || ...
1
vote
1answer
663 views

Arduino IDE / Specified folder/zip file does not contain a valid library

I trying to add library here but it doesn't seem to work https://github.com/esp8266/Arduino This happens "Specified folder/zip file does not contain a valid library" This problem make me no longer ...
1
vote
0answers
151 views

ESP12F module not working as an access point

I have an ESP12F WiFi module and I need it to work in access point mode. I burned the example code to it using Arduino IDE and it worked at first. I could connect to the WiFi provided by it using my ...
1
vote
0answers
355 views

How to use ESP8266 with Google API for GPS as well as controlling Arduino pins

I am working on IoT based project and I want to control the device using mobile App. Everything works fine, I can switch the load and get the status back on mobile app, but I want to use my ESP8266 as ...
1
vote
0answers
56 views

LED turning on late

I am using an Arduino nano and an ESP8266. I have burnt an Arduino, but when I send a request to the Arduino LED, it takes some time to turn ON. Here is my code: #include <SoftwareSerial.h> ...
1
vote
1answer
632 views

Detect power interruption on NodeMCU

Im using a 5v 1A power supply and connected to VIN pin on the NodeMCU. I also use 18650 battery to keep NodeMCU running in case the power supply shuts off due to power interruption. I'm planning to ...
1
vote
0answers
146 views

Sensors are not function with ESP8266 WeMos-D1R2

I attached all sensor into the Wemos-D1 for uploading the sensor data to the server. but when I upload the data to the server, it connects to the server but cannot save the data into the database and ...
1
vote
0answers
395 views

Using an OV7670, Arduino Uno, ESP8266 and SD card

I am planning to create a project which will take a picture with OV7670 and Arduino Uno with SD card and send it to server with ESP8266. is it possible to use Arduino Uno(it has only 2k RAM memory)?
1
vote
0answers
59 views

Esp8266 -12E v3

So I have this ESP 8266 v3 board that has a program. Running on it currently, it’s the example scan Network Program. No matter what program I send to it now I get a error complaining for board NodeMCU ...

1
4 5
6
7 8
11