Need help device is always offline

distans · December 27, 2017, 10:15pm

Do you think a failed DHCP lease is due to

A misconfiguration on your local network, e.g. in your router.
or
Blynk is crap!

(Hint: it’s no.1 )

PeteKnight · December 27, 2017, 11:27pm

Or option 3 - the w5100 Ethernet shield is crap!

The shield won’t connect to some routers and switches anyway. They work with Layer 3 switches and routers, but not Layer 2 devices.

If you’re connecting to a Layer 3 device and the LEDs on your shield are flashing rapidly then try resetting your Arduino to See if you can get it connecting correctly.
I’ve found that many of the shields ship with solder bridges across the pins on the main chip. In some cases 5his doesn’t affect the performance, but in others the shield just doesn’t work properly.

I eventually swapped to a NodeMCU device with built-in Wi-Fi instead of the Arduino and Ethernet shield and I’ve never looked back.

Pete.

distans · December 28, 2017, 12:34am

I might be of a different opinion! Compared to the ENC28J60 it’s golden!

That’s a strange statement You kinda need Layer 2 to get to Layer 3… and you need Layer 3 to get to the Internet! The problem with switching might be duplicate MAC-addresses on the network. A stupid and careless person once made the mistake of copying one setup to another without changing the MAC. I afraid can’t tell you who it was without implying myself

@Kurt_Tiempo Try using (suitable) static settings for your W5100. Mine look like this:

byte arduino_mac[] = { 0xDE, 0xEA, 0xBA, 0xFE, 0xFE, 0xCC };
IPAddress arduino_ip (192, 168,   0,  20);
IPAddress dns_ip     (192, 168,   0,   1);
IPAddress gateway_ip (192, 168,   0,   1);
IPAddress subnet_mask(255, 255, 255,   0);

Kurt_Tiempo · December 28, 2017, 5:40am

i can ping all devices the phone, arduino and the server but still device is offline in the app

Kurt_Tiempo · December 28, 2017, 6:20am

#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[] = "42f90c53c83c4*************ef8c97";

IPAddress server_ip (192, 168, 1, 46);

// 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,   1,  47);
IPAddress dns_ip     (192, 168, 1, 1);
IPAddress gateway_ip (192, 168, 1, 1);
IPAddress subnet_mask(255, 255, 255,   0);

#define W5100_CS  10
#define SDCARD_CS 4

void setup()
{
  // Debug console
  Serial.begin(9600);

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

  Blynk.begin(auth, server_ip, 8443, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

  //Blynk.begin(auth);
  // You can also specify server:
  //Blynk.begin(auth, "blynk-cloud.com", 8442);
  //Blynk.begin(auth, IPAddress(192,168,1,46), 8443);
}

void loop()
{
  Blynk.run();
  // You can inject your own code or combine it with other sketches.
  // Check other examples on how to communicate with Blynk. Remember
  // to avoid delay() function!
}

distans · December 28, 2017, 5:50am

Please format your code:

Kurt_Tiempo · December 28, 2017, 6:05am

i already formatted it

distans · December 28, 2017, 6:11am

Try port 8442 so your hardware can connect

GunnerTechTools · December 28, 2017, 6:21am

Proper way is as shown in the Welcome Topic… NOT using </> as that doesn’t always work

And stop with the emoticon overkill and duplicate posts… just makes us want to ignore your issue even more

Kurt_Tiempo · December 28, 2017, 6:34am

still device is offline in the app @distans

distans · December 28, 2017, 6:43am

Then I don’t know… Could be ports closed on your local server, wrong token or a million other things

Try a simple sketch without Blynk so you’ll know the ethernet is working. In the Ethernet library there are some examples, like WebClient.ino

GunnerTechTools · December 28, 2017, 6:57am

Aside from the incorrect port…

It has been a long time since I used an Ethernet adapter… but aren’t you supposed to use something like this to setup the adapter…

Ethernet.begin(arduino_mac, arduino_ip, gateway_ip, subnet_mask);

…before attempting the Blynk.begin() or perhaps Blynk.config() at this point, and using only the Blynk required parameters… Not try to cram it all into one line?

Kurt_Tiempo · December 28, 2017, 6:57am

what should be the right port @GunnerTechTools

GunnerTechTools · December 28, 2017, 6:59am

I dunno… what do you think?

distans · December 28, 2017, 6:59am

<BlynkSimpleEthernet.h> takes care of that

GunnerTechTools · December 28, 2017, 7:00am

OK… as stated… looong time since wasting my time on a crappy adapter All my past scripts using said adapter with preset config are long gone.

Kurt_Tiempo · December 28, 2017, 7:20am

still not working

Kurt_Tiempo · December 28, 2017, 7:22am

/* 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[] = "42f90c53c83c4816b1483b8c18ef8c97";

IPAddress server_ip (192, 168, 1, 46);

// 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,   1,  47);
IPAddress dns_ip     (192, 168, 1, 1);
IPAddress gateway_ip (192, 168, 1, 1);
IPAddress subnet_mask(255, 255, 255,   0);

#define W5100_CS  10
#define SDCARD_CS 4

void setup()
{
  // Debug console
  Serial.begin(9600);

  pinMode(SDCARD_CS, OUTPUT);
  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card
  Ethernet.begin( server_ip, 8442,arduino_mac, arduino_ip, gateway_ip, subnet_mask);
   //Blynk.begin(auth, server_ip, 8443, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

  Blynk.begin(auth);
  // You can also specify server:
  //Blynk.begin(auth, "blynk-cloud.com", 8442);
  //Blynk.begin(auth, IPAddress(192,168,1,46), 8443);
}

void loop()
{
  Blynk.run();
  // You can inject your own code or combine it with other sketches.
  // Check other examples on how to communicate with Blynk. Remember
  // to avoid delay() function!
}

GunnerTechTools · December 28, 2017, 7:40am

Disregard my guess at using Ethernet.begin() and try again as you had it, but with proper port 8442 this time…

Blynk.begin(auth, server_ip, 8442, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

Kurt_Tiempo · December 28, 2017, 7:57am

#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[] = "42f90c53c83c4816b1483b8c18ef8c97";

IPAddress server_ip (192, 168, 1, 46);

// 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,   1,  47);
IPAddress dns_ip     (192, 168, 1, 1);
IPAddress gateway_ip (192, 168, 1, 1);
IPAddress subnet_mask(255, 255, 255,   0);

#define W5100_CS  10
#define SDCARD_CS 4

void setup()
{
  // Debug console
  Serial.begin(9600);

  pinMode(SDCARD_CS, OUTPUT);
  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card
  //Ethernet.begin( server_ip, 8442,arduino_mac, arduino_ip, gateway_ip, subnet_mask);
  Blynk.begin(auth, server_ip, 8442, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

  //Blynk.begin(auth);
  // You can also specify server:
  //Blynk.begin(auth, "blynk-cloud.com", 8442);
  //Blynk.begin(auth, IPAddress(192,168,1,46), 8443);
}

void loop()
{
  Blynk.run();
  // You can inject your own code or combine it with other sketches.
  // Check other examples on how to communicate with Blynk. Remember
  // to avoid delay() function!
}