Arduino Ethernet Shield disconect and no reconnect

I have the problem that my board disconnects after a very short time. It will not be due to a same MAC address. I have tested the board as a single user on the router and tried several Mac addresses. Whether I take the domain or the IP from the Blynk Cloud also changes nothing.

  Download latest Blynk library here:

  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:
    Sketch generator: 
    Blynk community:  
    Social networks:  

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

  This example shows how to configure static IP with Ethernet.
  Be sure to check ordinary Ethernet example first!!!

  NOTE: Pins 10, 11, 12 and 13 are reserved for Ethernet module.
        DON'T use them in your sketch directly!

  WARNING: If you have an SD card, you may need to disable it
        by setting pin 4 to HIGH. Read more here:

  Feel free to apply it to any other example. It's simple!

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

#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).

char auth[] = "";

IPAddress server_ip (139, 59, 206,133 );

// Mac address should be different for each device in your LAN
byte arduino_mac[] = { 0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress arduino_ip ( 192,   168,   178,  90);
IPAddress dns_ip     ( 192, 168, 178,   1);
IPAddress gateway_ip ( 192, 168, 178,   1);
IPAddress subnet_mask(255, 255, 255,   0);

#define W5100_CS  10
#define SDCARD_CS 4
BlynkTimer timer;
int z;
void setup()
  // Debug console

  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card

  Blynk.begin(auth, server_ip, 8080, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
  // Or like this:
  //Blynk.begin(auth, "", 80, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

void loop()


Blynk library version?
Uno or Mega?
Any widgets attached to digital pins?


Version 1.0.1
I have great a New Projekt without any Thing, so no widgets.
I Use a Uno.

You’re using the IP for the Legacy server, so if you are indeed using the Legacy app then you should be using library version 0.6.1


How do you See this?
Can you explain me ?

How do I see what?


What ist Legacy server and how do you See that i Use IT?

An with Other Server can i Use ?

What version of the Blynk app are you using?


That’s the Legacy version of Blynk.

It’s no longer supported, and the Legacy cloud servers will be shut down at some point in future.

You should be using library version 0.6.1 with Legacy.


And witch Server/Service are the Future dir the new Version ?

The IoT server is
You’ll need an IoT account, an IoT Auth token and the Blynk device ID from the IoT template at the beginning of your sketch.


There you must pay per Month…
I have payed aboud 29€ for the Other App for token. When will they Switch Off the Service ?

Not for the free version.

That’s not known yet.


I have Chance the Version to 6. But the disconect and wont Connect ist allready.

Other Question, in Blynk IOT i Miss the Timer Widget ?

If this means that you have now migrated to Blynk IoT and now you device won’t connect at all then you’ll need to provide information about what changes you’ve made to the sketch, which Blynk library version you are using, what you’ve done in Blynk IoT regarding the creation of a template and device, and whether you are using the new IoT auth token. Providing information about what appears in your serial monitor would also be useful.

If those words were meant to mean something else then You’ll need to clarify exactly what this is. Maybe you’d be better writing in your native language?

It’s been replaced by Automations. You should read this…