@TheoL My Domoticz works again, I have to give it a fix ip because the IP was change and for your info, Your solution worked very well. It is now visible in Domoticz. Thanks for the support now I have to wait for other parts, I wait for my last parts for this project, an IR receiver so I can use a remote controle. After that I can use this project as a universal project, a default design in basic.
Again thanks!

that was easy, I do it right away. Thanks for the support and this stopped me for changing other parts of the event of the code of the sensor.
Have a nice day!

@alexsh1
That could I do, thanks for the tip and will do that today. Any idea is welcome :smiley:

@mfalkvidd I ony can tell "thanksfo the support ad you time" . Have a nice wekend!!!

thats logic, I hoped that I learned something in the last cople of days but trouble shooting is something else. Thank you for your advise and go on with testing and adding other devises.

@mfalkvidd You are right. This was the problem. I forgot to check that. thanks for the Direction!

At least I was able to test it. The solution worked perfect. Thanks for the support and I continue to finsh my project by implementing it at home. have a nice day. Bests
Dick

I finaly made it 4 buttons, 4 relay and a pir and here the script for sharing

#include <MySensor.h>
#include <SPI.h>
#include "Bounce2.h"
#define USE_MOTION_SENSOR
#define MOTION_SENSOR_PIN    3
#define RELAY_ON 0                      // switch around for realy HIGH/LOW state
#define RELAY_OFF 1

Bounce motionsDebouncer = Bounce();
//
MySensor gw;

#define RADIO_ID 11                    // radio Id, whatever channel you assigned to
#define noRelays 4
const int relayPin[] = {A1, A2, A3, A4}; //  switch around pins to your desire
const int buttonPin[] = {A5, 6, 7, 8}; //  switch around pins to your desire

class Relay             // relay class, store all relevant data (equivalent to struct)
{
public: 
  int buttonPin;                    // physical pin number of button
  int relayPin;                     // physical pin number of relay
  byte oldValue;                    // last Values for key (debounce)
  boolean relayState;               // relay status (also stored in EEPROM)
};

Relay Relays[noRelays];
Bounce debouncer[noRelays];
MyMessage msg[noRelays];

void setup()
{
  gw.begin(incomingMessage, RADIO_ID, true);
  delay(250);
  gw.sendSketchInfo("Multy-Relay&Pulsanti", "0.2");
  delay(250);

  pinMode( MOTION_SENSOR_PIN, INPUT_PULLUP );
  motionsDebouncer.attach(MOTION_SENSOR_PIN);
  motionsDebouncer.interval(50);

  // Initialize Relays with corresponding buttons
  for (int i = 0; i < noRelays; i++)
  {
    Relays[i].buttonPin = buttonPin[i];              // assign physical pins
    Relays[i].relayPin = relayPin[i];
    msg[i].sensor = i;                                   // initialize messages
    msg[i].type = V_LIGHT;
    debouncer[i] = Bounce();                        // initialize debouncer
    debouncer[i].attach(buttonPin[i]);
    debouncer[i].interval(5);
    pinMode(Relays[i].buttonPin, INPUT_PULLUP);
    pinMode(Relays[i].relayPin, OUTPUT);
    Relays[i].relayState = gw.loadState(i);                               // retrieve last values from EEPROM
    digitalWrite(Relays[i].relayPin, Relays[i].relayState ? RELAY_ON : RELAY_OFF); // and set relays accordingly
    gw.send(msg[i].set(Relays[i].relayState ? true : false));                 // make controller aware of last status
    gw.present(i, S_LIGHT);                               // present sensor to gateway
    delay(250);

  }
}

void loop()
{
  if ( motionsDebouncer.update()) {
    int value = motionsDebouncer.read();
    Serial.println( "Motion sensor is " + (String)value );
  }
{
  gw.process();
  for (byte i = 0; i < noRelays; i++)
  {
    debouncer[i].update();
    byte value = debouncer[i].read();
    if (value != Relays[i].oldValue && value == 0)
    {
      Relays[i].relayState = !Relays[i].relayState;
      digitalWrite(Relays[i].relayPin, Relays[i].relayState ? RELAY_ON : RELAY_OFF);
      gw.send(msg[i].set(Relays[i].relayState ? true : false));
      gw.saveState( i, Relays[i].relayState );
    }                 // save sensor state in EEPROM (location == sensor number)

    Relays[i].oldValue = value;
  }
  }
}

// process incoming message
void incomingMessage(const MyMessage &message)
{

  if (message.type == V_LIGHT)
  {
    if (message.sensor < noRelays)            // check if message is valid for relays..... previous line  [[[ if (message.sensor <=noRelays){ ]]]
    {
      Relays[message.sensor].relayState = message.getBool();
      digitalWrite(Relays[message.sensor].relayPin, Relays[message.sensor].relayState ? RELAY_ON : RELAY_OFF); // and set relays accordingly
      gw.saveState( message.sensor, Relays[message.sensor].relayState ); // save sensor state in EEPROM (location == sensor number)
    }
  }
  delay( 50 ); // give the input pins some rest. Incomming messages are still being processed.
}

@mfalkvidd I did not noticed that, I changed it to disabled and will monitor it during the upcomming days. Thanks for the tip!

@mfalkvidd thanks for your support and no errors anymore. Unfortunately it did not work forme. probably I split my sensors in to, one with the relais switches and 1 with the binary buttons. I think that is the only way to continue right now.

YES yes yes, I did not see that one. Your solution is working perfect also with the difference in light (5%).

Thank you for the support and have a nice weekend

@mfalkvidd , I added the change you advised and no erroros in the compilation anymore.
I will post the result after my testing of the project. Thanks for the support.

@m26872
thanks for the short lesson. I change the code it test it.

@sundberg84 Yes that is right but I just finished testing. I use 4 relays in a script but physicaly there are only 2 relays attached and from the other two I only us the " 0" to open or clos my curtains and thiose channels are not working. Clicking on the nano itself (on the button pin) than then curtains open/close.
Finaly I dir " clear Eeprom" and that did the job. It is working (for now).