Questions tagged [iot]
A new paradigm where many, typically microcontroller-driven embedded systems are connected by the Internet, and they are cooperating with eachother to reach common goals, without requiring human-to-human or human-to-computer interaction.
112 questions
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ESP8266 sends data to the website but doesn't return status
I have problem with my esp8266 it connects to my site and sends 89 bytes of data but does return a confirmation status all i get is SEND OK but i don't get any confirmation from my server
This is my ...
- 99
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How to listen to multiple server ports with ESP8266? [duplicate]
I'm using WeMos D1 R2. I'm trying to listen to both ports 1992 and 1993. This is my current code:
#include
WiFiServer server_1992(1992);
WiFiServer server_1993(1993);
void setup() {
Serial....
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1
answer
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NodeMCU successfully uploaded sketch but it does not work from Arduino IDE
NodeMCU successfully compiled and uploaded a simple blink sketch on board, no errors at all, but the LED stays on constantly and does not blink. Also I have checked the power is enough. I have checked ...
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ESP8266 doesn't connect to WiFi
I'm using an ESP8266 with the following pin configuration and it doesn't connect to my WiFi. The blue light on the ESP module is on and my LED is on. That's it.
VCC - 3.3v
GND - GND
CH_PD - 3.3v
GPIO ...
0
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2
answers
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ESP8266 + DHT11 AWS IOT Thing not updating thing shadow - was working before
I was able to get this working - https://www.youtube.com/watch?v=8hpro1olRK0 - send an SMS and email of temperature and humidity data from AWS IOT using esp8266 + dht11 but all of a sudden it stopped ...
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1
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How to post HTTP POST requests on my website?
I am working on a NodeMCU board to post sensor data on my website service. Basically my project is about POST and GET requests both in single code.
I am succeeding in sending GET requests from my ...
0
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1
answer
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Changing outputs infinitely for no reason
Im a student and working on a arduino project for IoT competition and me and my team have built a house and I made this code below.
For some reason when I upload it to my Arduino MKR1000 it constantly ...
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3
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ESP8266 disconnects after few hours
My system looks like this:
ESP8266 is connected to Arduino Uno (2, 3 pins) and a relay's data input to Arduino's pin 12 and power for relay is provided from another source.
Arduino gets data from ...
0
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2
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Is there any way for one Arduino board to communicate with multiple sensors? [closed]
Say a home IoT application to monitor water levels in basement at 4 or 5 different places and transmit that data back to a single Arduino board to be then interfaced with a GUI to do home monitoring?
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SSID was not declared in this scope
so I am new to arduino and coding in general, I am trying to use the arduino to remotely survey plants, I am using this guide: https://create.arduino.cc/projecthub/arduino/plant-communicator-7ea06f. ...
user41174
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esp8266 not defined in scope while using in class
Below code was working fine without using classes, after using class an error pops up: esp8266 is not defined in this scope
#include<SoftwareSerial.h>
#include<ArduinoJson.h>
#include<...
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2
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Simple GET request with ESP8266HTTPClient
I am trying to do a simple GET request. But I always get status code -1. Here is my complete code.
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
...
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