@Tigroenot
That fixed it indeed XD
Thanks for helping me out

@marceloaqno
How so?
I've tried running the command you've supplied, but it doesn't work... Do I have to install mosquitto?
I didn't see it anywhere in the guide.
Everything is working at the moment, you think it can pose a problem later?

@Tigroenot
That fixed it indeed XD
Thanks for helping me out

I got the previous problem out of the way for now...
Now onto the next one.

I started a node and now I can clearly see data being sent and received on my serial log and ssh. (See picture)

So I tried adding the gateway to domoticz using following settings:

Yet if I check hardware setup I can see no nodes being presented.

Are there settings or steps I missed?
Greetings
Flor

Hello
The past two days I've been trying to setup the gateway on my RPi 2 with domoticz.
Here's what I did.
I installed domoticz onto my raspi, then I tried the install the gateway.

git clone https://github.com/mysensors/MySensors.git
cd MySensors

Afterwards I did the following

./configure --my-gateway=mqtt --my-controller-ip-address=127.0.0.1 --my-mqtt-publish-topic-prefix=mysensors-out --my-mqtt-subscribe-topic-prefix=mysensors-in --my-mqtt-client-id=mygateway1

make

sudo ./bin/mysgw -d

Then it seems to start normally onto the point where it refuses to connect to anything.
Does anyone have a clue what's going wrong?
I can't seem to figure it out. I've tried it several times over, and always go similar results.
I was using GertSanders's connector for the RPi Hub and I've tried it with normal wiring too.
As far as I can see it shouldn't be a wiring problem...

EDIT:
!UPDATE!
I think I just fixed it. I reconfigured it to include the IRQ Pin and now it's just listening for throughput

pi@raspberrypi:~/MySensors $  sudo ./bin/mysgw -d
mysgw: Starting gateway...
mysgw: Protocol version - 2.1.0-beta
mysgw: MCO:BGN:INIT GW,CP=RNNG--Q,VER=2.1.0-beta
mysgw: TSF:LRT:OK
mysgw: TSM:INIT
mysgw: TSF:WUR:MS=0
mysgw: TSM:INIT:TSP OK
mysgw: TSM:INIT:GW MODE
mysgw: TSM:READY:ID=0,PAR=0,DIS=0
mysgw: MCO:REG:NOT NEEDED
mysgw: Listening for connections on 0.0.0.0:5003
mysgw: MCO:BGN:STP
mysgw: MCO:BGN:INIT OK,TSP=1

@GertSanders
Then I'll temporaraly switch over to a serial gateway.
Thanks again for the info!

@GertSanders
So I just succesfully updated the code to library 2.0.0
Yet, now nothing shows up in domoticz. Do I also need to update something to the raspberry pi 2 (which is acting as the gateway).
Since the serial gateway is stating to be succesfully sending information.

New code:

/**
 * 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) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/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
 * 
 * DESCRIPTION
 * Example sketch showing how to measue light level using a LM393 photo-resistor 
 * http://www.mysensors.org/build/light
 */

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

//Including nescessary libraries
#include <SPI.h>
#include <MySensors.h> 
#include <DHT.h>  


//Defining child ID's and sensor pins
#define LIGHTLEVEL 0
#define HUMIDITY 1
#define TEMPERATURE 2
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
#define LIGHT_SENSOR_ANALOG_PIN A0
DHT dht;

//Defining values to store sensor information
int LightLevel = 0;
float lastTemp;
float lastHum;
boolean metric = true; 
int lastLightLevel;

//Defining sleep and wait times
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)(30 seconds)
#define MESSAGEWAIT 500

MyMessage LightMsg(LIGHTLEVEL, V_LIGHT_LEVEL);
MyMessage msgHum(HUMIDITY, V_HUM);
MyMessage msgTemp(TEMPERATURE, V_TEMP);

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Room Flor 1", "2.0");
  wait(MESSAGEWAIT);

  // Register all sensors to gateway (they will be created as child devices)
  present(LIGHTLEVEL, S_LIGHT_LEVEL);
  wait(MESSAGEWAIT);
  present(HUMIDITY, S_HUM);
  wait(MESSAGEWAIT);
  present(TEMPERATURE, S_TEMP);
}

void setup() {
   dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN);
}

void loop() {
  delay(dht.getMinimumSamplingPeriod());
  
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }

  
  int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23; 
  Serial.println(lightLevel);
  if (lightLevel != lastLightLevel) {
      send(LightMsg.set(lightLevel));
      lastLightLevel = lightLevel;
  }
  sleep(SLEEP_TIME);
}

@GertSanders
Oh right! Guessed I missed that while copying and pasting everything.
I just remarked there was a v2.0 while writing the sketch... Might rewrite it while I'm busy

@GertSanders
Okay
So after editing your code to work on the slightly older mysensors library I still have installed, all seems to work!
Thanks a lot for your help!

Screenshots:

New code:

/**
 * 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) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/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
 * 
 * DESCRIPTION
 * This sketch provides an example how to implement a humidity/temperature
 * sensor using DHT11/DHT-22 
 * http://www.mysensors.org/build/humidity
 */

// Enable debug prints to serial monitor
#define MY_DEBUG 
// Enable and select radio type attached
#define MY_RADIO_NRF24

#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h>  


#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_LIGHT 2

#define LIGHTLEVEL 1
#define ledpin 13
#define LIGHT_SENSOR_ANALOG_PIN A0
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
#define MESSAGEWAIT 500
#define SENDRETRIES 5

int LightLevel = 0;
int PreviousLightLevel = 0;
boolean BatOK = false;
boolean LightOK = false;

unsigned long SLEEP_TIME = 10000; // Sleep time between reads (in milliseconds)
MySensor gw;

DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage LightMsg(LIGHTLEVEL, V_LIGHT_LEVEL);



void setup()  
{ 
  gw.begin();
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Room Flor 1", "1.0");
  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP);
  gw.present(LIGHTLEVEL, S_LIGHT_LEVEL);

  pinMode(ledpin, OUTPUT);
  pinMode(LIGHT_SENSOR_ANALOG_PIN, INPUT_PULLUP);

  LightLevel = (1023 - analogRead(LIGHT_SENSOR_ANALOG_PIN)) / 10.23;
  LightOK = false;
  PreviousLightLevel = 0;
  
  metric = gw.getConfig().isMetric;
}

void loop()      
{  
  delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }


  if (!LightOK)
  {
    if (LightLevel != PreviousLightLevel)
    {
      LightOK = gw.send(LightMsg.set(LightLevel));
      if (LightOK)
      {
        PreviousLightLevel = LightLevel;
      }
    }
    else
    {
      LightOK = true;
    }
  }

  
  gw.sleep(SLEEP_TIME); //sleep a bit
}


void blipled()
{
  gw.sleep(100);              // wait for a second
  digitalWrite(ledpin, HIGH);   // turn the LED on (HIGH is the voltage level)
  gw.sleep(50);              // wait for a second
  digitalWrite(ledpin, LOW);    // turn the LED off by making the voltage HIGH
}

@GertSanders Thank you!

So, you are basically sending a light intensity value between 0 and 100 to domoticz.
I'm going to leave the battery part out because my sensor is installed near a power outlet, and I can just use power from an adapter.
I'm testing it now, and reporting back with my results!

Hello

Since I'm a student and the holidays have begun, I finally have time to convert my purchases online into a domotic system.
I succesfully set up my raspi 2 with domoticz and started working on my very first sensor.
Now in the "build section" at light, there are true light sensors used, but I only needed an estimated value on which I can base actions.
So my idea was to use an LDR and some calculations to convert the analog input to a luxish value.
Now... I've edited the "light" sketch from the build section to send the value I calculated, but when I look in domoticz, at "Hardware setup", it seems like this child is sending no values. (screenshot below).
And when I go to "setup devices", this sensor doesn't even show up. (screenshot below)

Can anyone check my code and say what I've done wrong. I'll also add a picture of my breadboard in a moment. Don't know whether that'll be clear though.

Screenshots:

Breadboard:

My code:

#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h>  


#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_LIGHT 2

#define LIGHT_SENSOR_ANALOG_PIN 0
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
unsigned long SLEEP_TIME = 10000; // Sleep time between reads (in milliseconds)
MySensor gw;

DHT dht;
float lastTemp;
float lastHum;
int lastLightLevel;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgLux(CHILD_ID_LIGHT, V_LIGHT_LEVEL);



void setup()  
{ 
  gw.begin();
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Room Flor 1", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP);
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);

  metric = gw.getConfig().isMetric;
}

void loop()      
{  
  delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }

  int lightLevel = (2500/((analogRead(LIGHT_SENSOR_ANALOG_PIN)*0.0048828125)-500))/10; 
  Serial.println(lightLevel);
  if (lightLevel != lastLightLevel) {
      gw.send(msgLux.set(lightLevel));
      lastLightLevel = lightLevel;
  }


  
  gw.sleep(SLEEP_TIME); //sleep a bit
}```