Arduino Uno with MINI ENC28J60 Ethernet can't connect to network

Need Help With My Project
,
1

As the title says, I have an Arduino Uno Rev3 connected to an Mini Ethernet module ENC28J60.

Using the example Files > Examples > Blynk > Boards_Ethernet > ENC28J60 from the Blynk library version 1.0.1 by Volodymyr Shymanskyy I can’t succeed connecting it to internet. The wires were checked for continuity, the pinout used is the one in the example:

  Typical wiring would be:
   VCC -- 5V
   GND -- GND
   CS  -- D10
   SI  -- D11
   SCK -- D13
   SO  -- D12
   INT -- D2

The code I use (I’ve read somewhere that I can comment Blynk.run() until it connects):

#include <UIPEthernet.h>
#include <BlynkSimpleUIPEthernet.h>
char auth[] = "my_key";

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth);

  //Blynk.begin(auth, "blynk-cloud.com", 80);
  //Blynk.begin(auth, IPAddress(192,168,1,100), 8080);
}

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

The output:

[0] Getting IP...
[60218] DHCP Failed!
[1] Getting IP...

The Ethernet wire works because when I connect my PC via ethernet it works, I can navigate on the internet.

I also tried to use the “manual” connection to internet as another example exists in this sense. The code used and my settings:

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL-G0tCsqY"
#define BLYNK_DEVICE_NAME "D"
#define BLYNK_DEFAULT_PORT 80
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>

char auth[] = "my_key";

IPAddress server_ip (192,168,10,20);

byte arduino_mac[] = { 0x43, 0x44, 0xB2, 0x07, 0xF8, 0x26};
IPAddress arduino_ip ( 192,   168,   100,  254);
IPAddress dns_ip     (192,168,100,1);
IPAddress gateway_ip (192,168,1,1);
IPAddress subnet_mask(255, 255, 255,   0);

void setup()
{
  Serial.begin(9600);
  //Blynk.begin(auth, server_ip, 8080, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
  // Or like this:
  Blynk.begin(auth, "blynk-cloud.com", 80, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
}

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

The output

[0] Using static IP
[1580] IP:5.0.0.0
[1581] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.0.1 on Arduino Uno

[1692] Connecting to blynk-cloud.com:80

I want to connect the device via router. My router specs:

IPv4 Address. . . . . . . . . . . : 192.168.100.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.100.1
DHCP Server . . . . . . . . . . . : 192.168.100.1

I want to mention that for the second example I need to add Ethernet-master.zip library (because it doesn’t work only with Blynk) and for the first example I need to use UIPEthernet-master.zip. Also when I ping the Blynk cloud server I get the response from my computer.

2

This is the url for the legacy cloud servers.
The correct url for Blynk 2.0 is “blynk.cloud”

A gateway outside of your network range won’t work.

I don’t see how the code you’ve posted can produce this result. Are you sure the code and output match?

Pete.

3

Thank you very much for the fast respose. I modified the server address as you indicated.

this is the output:

[0] Using static IP
[1580] IP:0.0.0.0
[1581] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.0.1 on Arduino Uno

[1692] Connecting to blynk.cloud:80

for this code:


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

#define BLYNK_TEMPLATE_ID "TMPL-G0tCsqY"
#define BLYNK_DEVICE_NAME "Dragos"
#define BLYNK_DEFAULT_PORT 80

#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[] = "key";

IPAddress server_ip (192,168,10,20);

// Mac address should be different for each device in your LAN
byte arduino_mac[] = { 0x43, 0x44, 0xB2, 0x07, 0xF8, 0x26};
IPAddress arduino_ip ( 192,   168,   100,  254);
IPAddress dns_ip     (192,168,100,1);
IPAddress gateway_ip (192,168,100,1);
IPAddress subnet_mask(255, 255, 255,   0);

void setup()
{
  // Debug console
  Serial.begin(9600);
  //Blynk.begin(auth, server_ip, 8080, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
  // Or like this:
  Blynk.begin(auth, "blynk.cloud", 80, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
}

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

P.S I copy pasted everything except the key. This is the program compiled and uploaded on to my board. Now the ip is 0.0.0.0. after modifying the gateway to 192.168.100.1

4

Is your device connected directly to your router, or via a network switch?

Pete.

5

It is directly connected to my router (the single one).

6

And what happens if you change this:

To your preferred IP address of 104 rather than 254 ?

Pete.

7 
[0] Using static IP
[1580] IP:5.0.0.0
[1581] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.0.1 on Arduino Uno

[1692] Connecting to blynk.cloud:80
... and so on
8

Have you tried rebooting your router?

Pete.

9

I just tried but no difference at all.

10

Can there be a mismatch between the pinout in the example and the pinout the library used? Also, I don’t understand why the ENC example (DHCP) won’t work by itself.

11

Also, regardin the 5.0.0.0 value from the ip. It is a strange thing, I searched on the internet for an example to set the MAC address on the Ethernet module, and to my surprize, the MAC was 5.0.0.0.0.

The code

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

byte mac[] = {123, 123, 123, 123, 13, 142};
IPAddress ip(10, 0, 0, 177);

void setup() {
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  Ethernet.begin(mac, ip);

  byte macBuffer[6];  // create a buffer to hold the MAC address
  Ethernet.MACAddress(macBuffer); // fill the buffer
  Serial.print("The MAC address is: ");
  for (byte octet = 0; octet < 6; octet++) {
    Serial.print(macBuffer[octet], HEX);
    if (octet < 5) {
      Serial.print('-');
    }
  }

  Ethernet.setMACAddress(mac);
  Ethernet.MACAddress(macBuffer); // fill the buffer
  Serial.print("The MAC address is: ");
  for (byte octet = 0; octet < 6; octet++) {
    Serial.print(macBuffer[octet], HEX);
    if (octet < 5) {
      Serial.print('-');
    }
  }


}

void loop () {}

The output

The MAC address is: 5-0-0-0-0-0

P.S I’ve bought 2 mini ENC because I though one may be broken but I got the same behavior with both.

12

yesterday I fixed UIPthernet and EthernetENC for esp8266 arduino 3. use the GitHub version of the enc28j60 library

13

Excuse me could you please provide the link in order to avoid mistakes? I fell I already have some problems with libraries because I got a lot of messages that multiple libraries are installed and I would like to do a clean install for arduino, and then install only the correct libs. Thanks in advance!

14

This one I think…

Probably easier to simply delete the libraries you don’t want. The IDE compiler gives you the paths, so its quite easy.

Pete.

1 Like
15

Both libraries are in Library Manager and the “More info” link goes to GitHub.
The library.properties file contains the link too.

16

Thank you I will try as soon as I can.