My ESP32/8266 will not connect to the "blynk-cloud.com:80" (Login timeout)

Hi Paval

Please find the code below, I generated the code from the blynk code generator.
My devices just will not connect to the blynk cloud.
I have tested 2 x esp32’s and a Feather huzzah 8266 but I could not get it going.

So all of the esp’s connects to the wifi network and I did test 2 different networks, but falls short of the blynk cloud.
I use Visual studio code with platform IO.
the funny thing is the project worked right through the night until to following day, I removed power and it automatically connected to the wifi network again and all was working brilliantly.

The next day I wanted to show everybody at work and then boom nothing!
it will not connect to the blynk server
I then deleted the project and started over again and still nothing I tried to run it from a different PC but no luck it does the same and then I created another account and tried again and still the same(obviously every time I changed the token with creating a new account and or project)

blynk app runs on android ( Samsung s9)
and the my operating systems I loaded the code from was windows 7 and another PC was windows 10
the blynk library is 0.6.1
I am running the DHT sample with a DHT 11 sensor

I know this is a simple project which makes it even more frustrating, I even went through all the youtube examples i could find to make sure I did not miss anything!

I really will appreciate the help

regards

Simply paste your code between

/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

  Blynk is a platform with iOS and Android apps to control
  Arduino, Raspberry Pi and the likes over the Internet.
  You can easily build graphic interfaces for all your
  projects by simply dragging and dropping widgets.

    Downloads, docs, tutorials: http://www.blynk.cc
    Sketch generator:           http://examples.blynk.cc
    Blynk community:            http://community.blynk.cc
    Follow us:                  http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

  Blynk library is licensed under MIT license
  This example code is in public domain.

 *************************************************************

  This example shows how value can be pushed from Arduino to
  the Blynk App.

  WARNING :
  For this example you'll need Adafruit DHT sensor libraries:
    https://github.com/adafruit/Adafruit_Sensor
    https://github.com/adafruit/DHT-sensor-library

  App project setup:
    Value Display widget attached to V5
    Value Display widget attached to V6
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "-ai1Kv0Ro3L_kyg05MI7wCyAJm7U2w5l";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "PeperNartjie";
char pass[] = "JouMaSeKoekies";

#define DHTPIN 2          // 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(); // 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);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);

  dht.begin();

  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);
}

void loop()
{
  Blynk.run();
  timer.run();
}

Please edit your post to use triple backticks at the beginning and end of your code, not the characters that you’ve used.
Triple backticks look like this:
```

Pete.

image

You may want to read this thread:

I see that you’re also from SA, so may be relevant to your issue.

Pete.

Like that?

No
Like that
```

Ok I read the post of the link you sent me and I think that might be the issue
as both devices I used as a gateway was Vodacom as the network provider
I will try another network provider and re test, but i am almost certain its the case

I will give you feedback once I have tested

Regards

No, the triple backticks need to be on a separate line. The ```cpp at the beginning wasn’t on its own line, so wasn’t doing anything. I fixed it for you, and you can now see how correctly formatted code should appear, so you’ll be able to do it yourself next time.

Pete.

Oh Ok like that.
Sorry about that :slight_smile:
Ok that seems easy enough

Thanks Pete

1 Like

Hi Pete

Ok it seems that Vodacom was the issue
I got it working on a Cell C data card ( For now)
but I also had to put it into a android device and then it worked ( Finally)
So Vodacom Sim and Vodacom WiFi router – NOT WORKING
Vodacom Sim and a Android phone – NOT WORKING
Cell C Sim and a Windows Tablet (Hotspot) — NOT WORKING
Cell C Sim and Android Tablet ( Hotspot) —Working!!!:upside_down_face::blush:

I don’t know if there is any other methods you want me to test but for now I am just happy that it is working.

Thanks for the help

Kind Regards

Paul

1 Like

11 posts were split to a new topic: Problem connecting to Blynk Cloud