Best posts made by qobouky

Of course it was issue on my side. My understanding was that GW baud rate in mycontroller should be baud rate of RS485. When I changed baud rate to correct value everything works well. Nod is added automatically.

But I would like to kindly ask you for next suggestion.

I plan to use one Arduino to monitor Temp, Hum and CO2. Those sensors are presented in MyController as static now.

Additionally script should control 3 relays. I added relay script from My sensors but I have no idea where I should see those relays in MyController and how to control them manually

// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable RS485 transport layer
#define MY_RS485

// Define this to enables DE-pin management on defined pin
#define MY_RS485_DE_PIN 2

// Set RS485 baud rate to use
#define MY_RS485_BAUD_RATE 9600

// Enable this if RS485 is connected to a hardware serial port
//#define MY_RS485_HWSERIAL Serial1

#define MY_NODE_ID 20

#include <MySensors.h>

static const uint64_t UPDATE_INTERVAL = 10000;

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_CO2 2

#define RELAY_PIN 10  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define NUMBER_OF_RELAYS 3 // Total number of attached relays
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0 // GPIO value to write to turn off attached relay

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgCo2(CHILD_ID_CO2, V_LEVEL);
MyMessage msgCo2b(CHILD_ID_CO2, V_UNIT_PREFIX);

// ----------------------------------------------------------------------------

void before()
{
    for (int sensor=1, pin=RELAY_PIN; 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);
    }
}

void presentation()  
{ 
  // Send the sketch version information to the gateway
  sendSketchInfo("Lihen", "1.0");
  
  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
  present(CHILD_ID_CO2, S_AIR_QUALITY);
  send(msgCo2b.set("ppm"));

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

// ----------------------------------------------------------------------------
void setup()
{
  Serial.println( F("Arduino MySensors RS485 Node test") );    // Fonction F() permet de placer la chaine dans la mémoire eprogramme (Arduino IDE 1.0).
  analogReference(INTERNAL);
  delay(1000);
}


void loop()
{
    Serial.println( F("Loop ...") );
    TempHum();
    readCO2(); 
    // Sleep for a while to save energy
    sleep(UPDATE_INTERVAL); 
}

void TempHum ()
{
    int temperature = 30;
    int humidity = 50;
    Serial.print(F("Tmp: "));
    Serial.println(temperature);
    Serial.print(F("Hum: "));
    Serial.println(humidity);

    send(msgTemp.set(temperature, 1));
    send(msgHum.set(humidity, 1));
}

int readCO2()
{
    int CO2value = 1550;
    Serial.print(F("CO2: "));
    Serial.println(CO2value);

    send(msgCo2.set(CO2value)); 
}

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

Thank you very much for great explanation!!!

But is there a way how to connect ESP8266 to Controller. In MySensors are available just ethernet or serial gateway with NRF. Of course I can connect ESP to NRF and then use serial gateway but then there is no difference if I use ESP or nano.

My idea is that I want to use wireless network for sensors. One of my sensor should be LCD/TFT with touch so I wanted to prevent to use NRF (it occuy SPI)
https://forum.mysensors.org/topic/9276/home-automation-tft-touch-display

I found an root cause.

In pin definition was

#define AIQ_SENSOR_ANALOG_PIN 1

but should be

#define AIQ_SENSOR_ANALOG_PIN A1

I do not know why with first definition it worked with nano but did not work with mini.