@mfalkvidd
Yes. I use this:

It shouldn't be wired wrong.

@virtualmkr
I cant connect to arduino again. I ping ip from my laptop and its ok.
Error in HA is "cannot make connection"

I installed file editor and i dont have such a folder and file.

@virtualmkr Hello!
I checked and i think i dont have any file from mysensors.

I'm not good at programming and i only change ready skatches. Maybe you can be my guide how to start with this?
Main thing for me is to have arduino as a light controller. To analogs i have connected monostable switches and on digitals outputs a i had connected relays. In domoticz it works very well via USB.

@mfalkvidd OK.
I changed my sketch and finally i connect it to HA using integration but still dont have any device in HA.

code_text

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
//#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

// Enable gateway ethernet module type
#define MY_GATEWAY_W5100

// W5100 Ethernet module SPI enable (optional if using a shield/module that manages SPI_EN signal)
//#define MY_W5100_SPI_EN 4

// Enable Soft SPI for NRF radio (note different radio wiring is required)
// The W5100 ethernet module seems to have a hard time co-operate with
// radio on the same spi bus.
#if !defined(MY_W5100_SPI_EN) && !defined(ARDUINO_ARCH_SAMD)
#define MY_SOFTSPI
#define MY_SOFT_SPI_SCK_PIN 14
#define MY_SOFT_SPI_MISO_PIN 16
#define MY_SOFT_SPI_MOSI_PIN 15
#endif

// When W5100 is connected we have to move CE/CSN pins for NRF radio
#ifndef MY_RF24_CE_PIN
#define MY_RF24_CE_PIN 5
#endif
#ifndef MY_RF24_CS_PIN
#define MY_RF24_CS_PIN 6
#endif

// Enable UDP communication
//#define MY_USE_UDP  // If using UDP you need to set MY_CONTROLLER_IP_ADDRESS or MY_CONTROLLER_URL_ADDRESS below

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,0,207
// If using static ip you can define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,0,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// Renewal period if using DHCP
//#define MY_IP_RENEWAL_INTERVAL 60000

// The port to keep open on node server mode / or port to contact in client mode
#define MY_PORT 5003

// Controller ip address. Enables client mode (default is "server" mode).
// Also enable this if MY_USE_UDP is used and you want sensor data sent somewhere.
#define MY_CONTROLLER_IP_ADDRESS 192, 168, 0, 140
//#define MY_CONTROLLER_URL_ADDRESS "my.controller.org"

// The MAC address can be anything you want but should be unique on your network.
// Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
// Note that most of the Arduino examples use  "DEAD BEEF FEED" for the MAC address.
#define MY_MAC_ADDRESS 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED


// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
//#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
//#define MY_INCLUSION_MODE_BUTTON_PIN  3

// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Flash leds on rx/tx/err
// Uncomment to override default HW configurations
//#define MY_DEFAULT_ERR_LED_PIN 7  // Error led pin
//#define MY_DEFAULT_RX_LED_PIN  8  // Receive led pin
//#define MY_DEFAULT_TX_LED_PIN  9  // Transmit led pin

#if defined(MY_USE_UDP)
#include <EthernetUdp.h>
#endif
#include <Ethernet.h>
#include <MySensors.h>
#include <Bounce2.h>
#define MY_REPEATER_FEATURE
#define MY_NODE_ID 1
#include <SPI.h>
// Enable repeater functionality for this node
#define MY_REPEATER_FEATURE

#define RELAY_PIN  5
#define BUTTON_PIN  3
#define CHILD_ID 1
#define RELAY_ON 1
#define RELAY_OFF 0

Bounce debouncer = Bounce();
bool state = false;
bool initialValueSent = false;

MyMessage msg(CHILD_ID, V_STATUS);

void setup()
{
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  debouncer.attach(BUTTON_PIN);
  debouncer.interval(10);

  // Make sure relays are off when starting up
  digitalWrite(RELAY_PIN, RELAY_OFF);
  pinMode(RELAY_PIN, OUTPUT);
}

void presentation()  {
  sendSketchInfo("Relay+button", "1.0");
  present(CHILD_ID, S_BINARY);
}

void loop()
{
  if (!initialValueSent) {
    Serial.println("Sending initial value");
    send(msg.set(state?RELAY_ON:RELAY_OFF));
    Serial.println("Requesting initial value from controller");
    request(CHILD_ID, V_STATUS);
    wait(2000, C_SET, V_STATUS);
  }
  if (debouncer.update()) {
    if (debouncer.read()==LOW) {
      state = !state;
      // Send new state and request ack back
      send(msg.set(state?RELAY_ON:RELAY_OFF), true);
    }
  }
}

void receive(const MyMessage &message) {
  if (message.isAck()) {
     Serial.println("This is an ack from gateway");
  }

  if (message.type == V_STATUS) {
    if (!initialValueSent) {
      Serial.println("Receiving initial value from controller");
      initialValueSent = true;
    }
    // Change relay state
    state = (bool)message.getInt();
    digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
    send(msg.set(state?RELAY_ON:RELAY_OFF));
  }
}

Thank you @mfalkvidd
Do i need this radio module even if i use wire system in my home?

@mfalkvidd
This is what i have:

I cant see arduino in my router internal website, but i made a ping wrom Command line and i have this:

Unfortunatelly i cant connect it in HA:

@mfalkvidd Hi,
I tried this but still cannot connect to my LAN network. Router doesn't give me IP. I cannot see arduino in HA.
I tried many configurations. Even i put a new sketches from my sensors examples in arduino IDE (GatewayW5100 and GatewayW5100Client).

Maybe you someone have working sketch for tests?

Thank you in advance.

@mfalkvidd
Yes. I use this:

It shouldn't be wired wrong.

Hello Mfalkvidd!
Thank you for your post. I checked your link and can't find any answer for my problem.
Here is what i get:

Dears,
I use Arduino Mega and M5100 ethernet Shield. I put prepared sketch but it won't connect to my local LAN. Could you please check my sketch?

code_text/*
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2019 Sensnology AB
 * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0 - Henrik Ekblad
 * Contribution by a-lurker and Anticimex
 * Contribution by Norbert Truchsess <norbert.truchsess@t-online.de>
 * Contribution by Tomas Hozza <thozza@gmail.com>
 *
 *
 * DESCRIPTION
 * The EthernetGateway sends data received from sensors to the ethernet link.
 * The gateway also accepts input on ethernet interface, which is then sent out to the radio network.
 *
 * The GW code is designed for Arduino 328p / 16MHz.  ATmega168 does not have enough memory to run this program.
 *
 * LED purposes:
 * - To use the feature, uncomment MY_DEFAULT_xxx_LED_PIN in the sketch below
 * - RX (green) - blink fast on radio message received. In inclusion mode will blink fast only on presentation received
 * - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly
 * - ERR (red) - fast blink on error during transmission error or receive crc error
 *
 * See http://www.mysensors.org/build/ethernet_gateway for wiring instructions.
 *
 */

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

// Enable gateway ethernet module type
#define MY_GATEWAY_W5100

// W5100 Ethernet module SPI enable (optional if using a shield/module that manages SPI_EN signal)
//#define MY_W5100_SPI_EN 4

// Enable Soft SPI for NRF radio (note different radio wiring is required)
// The W5100 ethernet module seems to have a hard time co-operate with
// radio on the same spi bus.
#if !defined(MY_W5100_SPI_EN) && !defined(ARDUINO_ARCH_SAMD)
#define MY_SOFTSPI
#define MY_SOFT_SPI_SCK_PIN 14
#define MY_SOFT_SPI_MISO_PIN 16
#define MY_SOFT_SPI_MOSI_PIN 15
#endif

// When W5100 is connected we have to move CE/CSN pins for NRF radio
#ifndef MY_RF24_CE_PIN
#define MY_RF24_CE_PIN 5
#endif
#ifndef MY_RF24_CS_PIN
#define MY_RF24_CS_PIN 6
#endif

// Enable UDP communication
//#define MY_USE_UDP  // If using UDP you need to set MY_CONTROLLER_IP_ADDRESS or MY_CONTROLLER_URL_ADDRESS below

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,0,201

// If using static ip you can define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,0,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// Renewal period if using DHCP
//#define MY_IP_RENEWAL_INTERVAL 60000

// The port to keep open on node server mode / or port to contact in client mode
#define MY_PORT 5003

// Controller ip address. Enables client mode (default is "server" mode).
// Also enable this if MY_USE_UDP is used and you want sensor data sent somewhere.
//#define MY_CONTROLLER_IP_ADDRESS 192, 168, 178, 254
//#define MY_CONTROLLER_URL_ADDRESS "my.controller.org"

// The MAC address can be anything you want but should be unique on your network.
// Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
// Note that most of the Arduino examples use  "DEAD BEEF FEED" for the MAC address.
#define MY_MAC_ADDRESS 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED


// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
//#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
//#define MY_INCLUSION_MODE_BUTTON_PIN  3

// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Flash leds on rx/tx/err
// Uncomment to override default HW configurations
//#define MY_DEFAULT_ERR_LED_PIN 7  // Error led pin
//#define MY_DEFAULT_RX_LED_PIN  8  // Receive led pin
//#define MY_DEFAULT_TX_LED_PIN  9  // Transmit led pin

#if defined(MY_USE_UDP)
#include <EthernetUdp.h>
#endif
#include <Ethernet.h>
#include <MySensors.h>
#include <Bounce2.h>

// Enable repeater functionality for this node
#define MY_REPEATER_FEATURE


#define RELAY_LA_01  4  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define RELAY_LA_02  5
#define RELAY_LA_03  6
#define RELAY_LA_04  7
#define RELAY_LA_05  8
#define RELAY_LA_06  9
#define RELAY_LA_07  10
#define RELAY_LA_08  11
#define RELAY_LA_09  12
#define RELAY_LA_10  13

#define NUMBER_OF_RELAYS 10 // Total number of attached relays
#define RELAY_ON 0  // GPIO value to write to turn on attached relay
#define RELAY_OFF 1 // GPIO value to write to turn off attached relay

#define LA_01 A1
#define LA_02 A2
#define LA_03 A3
#define LA_04 A4
#define LA_05 A5
#define LA_06 A6
#define LA_07 A7
#define LA_08 A8
#define LA_09 A9
#define LA_10 A10


void before() { 
  for (int sensor=1, pin=RELAY_LA_01; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
    // Then set relay pins in output mode
    pinMode(pin, OUTPUT);   
    // Set relay to last known state (using eeprom storage) 
    digitalWrite(pin, loadState(sensor)?RELAY_ON:RELAY_OFF);
  }
}
Bounce debouncer = Bounce();
Bounce debouncer2 = Bounce();
Bounce debouncer3 = Bounce();
Bounce debouncer4 = Bounce();
Bounce debouncer5 = Bounce();
Bounce debouncer6 = Bounce();
Bounce debouncer7 = Bounce();
Bounce debouncer8 = Bounce();
Bounce debouncer9 = Bounce();
Bounce debouncer10 = Bounce();

void setup() { 
  // Setup locally attached sensors
  delay(10000);
   // Setup the button.
  pinMode(LA_01, INPUT_PULLUP);
  pinMode(LA_02, INPUT_PULLUP);
  pinMode(LA_03, INPUT_PULLUP);
  pinMode(LA_04, INPUT_PULLUP);
  pinMode(LA_05, INPUT_PULLUP);
  pinMode(LA_06, INPUT_PULLUP);
  pinMode(LA_07, INPUT_PULLUP);
  pinMode(LA_08, INPUT_PULLUP);
  pinMode(LA_09, INPUT_PULLUP);
  pinMode(LA_10, INPUT_PULLUP);
  // After setting up the button, setup debouncer.
  debouncer.attach(LA_01);
  debouncer.interval(5);
  debouncer2.attach(LA_02);
  debouncer2.interval(5);
  debouncer3.attach(LA_03);
  debouncer3.interval(5);
  debouncer4.attach(LA_04);
  debouncer4.interval(5);
  debouncer5.attach(LA_05);
  debouncer5.interval(5);
  debouncer6.attach(LA_06);
  debouncer6.interval(5);
  debouncer7.attach(LA_07);
  debouncer7.interval(5);
  debouncer8.attach(LA_08);
  debouncer8.interval(5);
  debouncer9.attach(LA_09);
  debouncer9.interval(5);
  debouncer10.attach(LA_10);
  debouncer10.interval(5);

  //presentation();
}
void presentation()  
{   
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Relay", "1.0");

  for (int sensor=1, pin=RELAY_LA_01; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
    // Register all sensors to gw (they will be created as child devices)
    present(sensor, S_LIGHT);
  }
}

MyMessage msg(1, V_LIGHT);
MyMessage msg2(2, V_LIGHT);
MyMessage msg3(3, V_LIGHT);
MyMessage msg4(4, V_LIGHT);
MyMessage msg5(5, V_LIGHT);
MyMessage msg6(6, V_LIGHT);
MyMessage msg7(7, V_LIGHT);
MyMessage msg8(8, V_LIGHT);
MyMessage msg9(9, V_LIGHT);
MyMessage msg10(10, V_LIGHT);

void loop() { 
  // Send locally attached sensor data here 
  if (debouncer.update()) {
    // Get the update value.
    int value = debouncer.read();
    // Send in the new value.
    if(value == LOW){
         saveState(1, !loadState(1));
         digitalWrite(RELAY_LA_01, loadState(1)?RELAY_ON:RELAY_OFF);
         send(msg.set(loadState(1)));
         }
  }
  if (debouncer2.update()) {
      int value2 = debouncer2.read();
    if(value2 == LOW){
         saveState(2, !loadState(2));
         digitalWrite(RELAY_LA_02, loadState(2)?RELAY_ON:RELAY_OFF);
         send(msg2.set(loadState(2)));
         }
  }
  if (debouncer3.update()) {
    // Get the update value.
    int value3 = debouncer3.read();
    // Send in the new value.
    if(value3 == LOW){
         saveState(3, !loadState(3));
         digitalWrite(RELAY_LA_03, loadState(3)?RELAY_ON:RELAY_OFF);
         send(msg3.set(loadState(3)));
         }
  }
  if (debouncer4.update()) {
    // Get the update value.
    int value4 = debouncer4.read();
    // Send in the new value.
    if(value4 == LOW){
         saveState(4, !loadState(4));
         digitalWrite(RELAY_LA_04, loadState(4)?RELAY_ON:RELAY_OFF);
         send(msg4.set(loadState(4)));
         }
  }
  if (debouncer5.update()) {
    // Get the update value.
    int value5 = debouncer5.read();
    // Send in the new value.
    if(value5 == LOW){
         saveState(5, !loadState(5));
         digitalWrite(RELAY_LA_05, loadState(5)?RELAY_ON:RELAY_OFF);
         send(msg5.set(loadState(5)));
         }
  }
  if (debouncer6.update()) {
    // Get the update value.
    int value6 = debouncer6.read();
    // Send in the new value.
    if(value6 == LOW){
         saveState(6, !loadState(6));
         digitalWrite(RELAY_LA_06, loadState(6)?RELAY_ON:RELAY_OFF);
         send(msg6.set(loadState(6)));
         }
  }
  if (debouncer7.update()) {
    // Get the update value.
    int value7 = debouncer7.read();
    // Send in the new value.
    if(value7 == LOW){
         saveState(7, !loadState(7));
         digitalWrite(RELAY_LA_07, loadState(7)?RELAY_ON:RELAY_OFF);
         send(msg7.set(loadState(7)));
         }
  }
  if (debouncer8.update()) {
    // Get the update value.
    int value8 = debouncer8.read();
    // Send in the new value.
    if(value8 == LOW){
         saveState(8, !loadState(8));
         digitalWrite(RELAY_LA_08, loadState(8)?RELAY_ON:RELAY_OFF);
         send(msg8.set(loadState(8)));
         }
  }
  if (debouncer9.update()) {
    // Get the update value. 
    int value9 = debouncer9.read();
    // Send in the new value.
    if(value9 == LOW){
         saveState(9, !loadState(9));
         digitalWrite(RELAY_LA_09, loadState(9)?RELAY_ON:RELAY_OFF);
         send(msg9.set(loadState(9)));
         }
  }
  if (debouncer10.update()) {
    // Get the update value.
    int value10 = debouncer10.read();
    // Send in the new value.
    if(value10 == LOW){
         saveState(10, !loadState(10));
         digitalWrite(RELAY_LA_10, loadState(10)?RELAY_ON:RELAY_OFF);
         send(msg10.set(loadState(10)));
         }
  }
}


void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type==V_LIGHT) {
     // Change relay state
     digitalWrite(message.sensor-1+RELAY_LA_01, message.getBool()?RELAY_ON:RELAY_OFF);
     // Store state in eeprom
     saveState(message.sensor, message.getBool());
     // Write some debug info
     Serial.print("Incoming change for sensor:");
     Serial.print(message.sensor);
     Serial.print(", New status: ");
     Serial.println(message.getBool());
   } 
}