How to connect Esp8266 connected to Arduino UNO to Blynk app via wifi?

Projects Programming
1

How to connect the esp8266 module to wifi using arduino uno board? I am using the code below to connect to the wifi, the connection seems successful to the esp8266, but nothing happens.
The code:

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
 
 
#include <SPI.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
 
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "a7ZaEsKeAcWypXYhgGCI4cB_KDtrBb8K";
 
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "wifi";
char pass[] = "pass";
 
#define DHTPIN 3         // What digital pin we're connected to
 
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11     // DHT 11
#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301
 
DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;
 
// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
{
  float h = dht.readHumidity();
  float t = dht.readTemperature(true); // or dht.readTemperature(true) for Fahrenheit
 
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, h);
  Blynk.virtualWrite(V6, t);
}
 
void setup()
{
  // Debug console
  Serial.begin(9600);
 
  Blynk.begin(auth, ssid, pass);
 
  dht.begin();
 
  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);
}
 
void loop()
{
  Blynk.run();
  timer.run();
}

The console result:

image
image1174×778 14.7 KB

What should I do to have the connection successful?

2

open the Serial Monitor

3

@iuliana_ast please try and post in the right section of the forum you posted in installation and troubleshooting, which if you bothered to read the description of that section is NOT for your projects.

4

there is nothing happening in the serial monitor. I tried changing the baud rate, to see anything, but nothing...

5

is io 0 still wired to ground?

6

No, I removed the pin 0 connection from the ESP after uploading the code on it

7

set Serial Monitor to 9600 baud and then reset the esp8266

8

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.