This particular one is running on an Arduino Duemilanove, but the sensor and gateway are both using the same library version (1.5.1) so that should be all good, no?

Because it would require updating my Gateway which is in a somewhat inaccessible place right now. That's running 1.5.1 which is when I started playing with MySensors.

There's no way I can update it over the air, or somesuch, is there?

These do look like spurious sensors created by my most recent node, for some reason. Rather than nodes from my neighbours being picked up, or similar.

Incidentally, the actual sensors on this node have stopped updating in Domoticz since the random sensors have appeared.

This is what my USB Serial MySensors gateway sees. Using library 1.5.1.

A load of components I ordered have arrived, and I'm busying myself building new MySensors nodes for my Domoticz setup.

I'm using DHT11, PIR, and LDR on one board, using the 3in1 sketch from here: https://forum.mysensors.org/topic/404/3-in-1-humidity-temp-and-motion with the MySensors Light Sensor example sketch from the library.

This is my version:

//this is as per the forum 3 in 1, but with ldr
//node id set msnuslly to 10

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

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_MOT 2   // Id of the sensor child
#define HUMIDITY_SENSOR_DIGITAL_PIN 4

//ldr stuff
#define CHILD_ID_LIGHT 3
#define LIGHT_SENSOR_ANALOG_PIN A1
//

#define DIGITAL_INPUT_SENSOR 3   // The digital input you attached your motion sensor.  (Only 2 and 3 generates interrupt!)
#define INTERRUPT DIGITAL_INPUT_SENSOR-2 // Usually the interrupt = pin -2 (on uno/nano anyway)


unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

MySensor gw;
//ldr stuff
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
int lastLightLevel;
//

DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgMot(CHILD_ID_MOT, V_TRIPPED);

void setup()  
{ 
  gw.begin(NULL,10,false);
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Humidity/Motion", "1.0");


 pinMode(DIGITAL_INPUT_SENSOR, INPUT);      // sets the motion sensor digital pin as input
 
  // 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_MOT, S_MOTION);

  //ldr stuff
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
  //
   
  metric = gw.getConfig().isMetric;
}

void loop()      

{  
  // Read digital motion value
  boolean tripped = digitalRead(DIGITAL_INPUT_SENSOR) == HIGH; 
        
  Serial.println(tripped);
  gw.send(msgMot.set(tripped?"1":"0"));  // Send tripped value to gw 
  
  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);
  }

  //ldr stuff
  int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23; 
  Serial.print("Light Level: ");
  Serial.println(lightLevel);
  if (lightLevel != lastLightLevel) {
      gw.send(msg.set(lightLevel));
      lastLightLevel = lightLevel;
  }
    // end light measurement

  //
 
  // Sleep until interrupt comes in on motion sensor. Send update every two minute. 
  gw.sleep(INTERRUPT,CHANGE, SLEEP_TIME);
}

The sensors appear in Domoticz, and work fine. The next day, a load of additional, random sensors appear:

Has anybody experienced this before? Does my code look OK? Thanks so much for any help!

@sundberg84 I hit this post again today with the intention of finally biting the bullet and buying some boards - but then I saw your notes about the next revision of the board. Could you tell me when you're expecting to release that? Is it worth me waiting a while?

Thanks!

For my own sake of closure, I wanted to share that it does appear to have been my bodged together PIR/BMP180 sketch that was causing the issue - but only when in combination of an additional sensor node. Missing closing bracket somewhere or something.

Thanks for the help!

You mean the output on the serial monitor? I'm not at home at the moment so can't provide you with the output, but I don't recall seeing any values outside of the expected range (for temperature, light, and movement). I can provide this when I'm back.

Starting to think that it might actually be my first node that's causing this. One of the 'random' values does match the pressure value of the first sensor on occasion - I wonder if there's actually a transmission issue. I did hack that sketch together myself, so it could well be that. Couldn't find an example sketch for PIR and BMP180.

Hi hek - thanks for the reply!

I'm using the serial gateway, with an arduino nano as per this example: https://www.mysensors.org/build/serial_gateway

The sketch is straight from the MySensors library - version 1.5 from the site.

I'm using the standard Serial Gateway setup, going into Domotiga running as a VM. I have one sensor running this sketch I mashed together from two of the examples (PIR and the BMP180 sketch). This works fine, the PIR, temperature, and pressure appear as 3 sensors. I've built another MySensor, running the sketch in this thread: http://forum.mysensors.org/topic/1006/my-motion-dallas-light-sensor

After a seemingly random interval, additional MySensor devices begin appearing in Domotiga. Here's an extract of the log - this is when a new sensor appeared in Domotiga.

2016/02/01 23:49:29 [MySensors] < 0;0;3;0;9;read: 254-254-0 s=0,c=1,t=4,pt=7,l=5,sg=0:1089
2016/02/01 23:49:29 [MySensors] Node:0; sensor-id:0; message-type:3; ack:0; sub-type:9; payload:read: 254-254-0 s=0,c=1,t=4,pt=7,l=5,sg=0:1089
2016/02/01 23:49:29 [MySensors] Gateway log message: read: 254-254-0 s=0,c=1,t=4,pt=7,l=5,sg=0:1089
2016/02/01 23:49:29 [MySensors] < 254;0;1;0;4;1089
2016/02/01 23:49:29 [MySensors] Node:254; sensor-id:0; message-type:1; ack:0; sub-type:4; payload:1089
2016/02/01 23:49:29 [MySensors] Set value '1089' for node 254
2016/02/01 23:49:29 [Devices] Device with address '254' is 'Bedroom pressure'
2016/02/01 23:49:29 [Devices] ValueUpdate called for device with id '116' valuenum '1' and value '1089'
2016/02/01 23:49:29 [MySensors] < 0;0;3;0;9;read: 254-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] Node:0; sensor-id:0; message-type:3; ack:0; sub-type:9; payload:read: 254-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] Gateway log message: read: 254-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] < 254;2;1;0;16;0
2016/02/01 23:49:29 [MySensors] Node:254; sensor-id:2; message-type:1; ack:0; sub-type:16; payload:0
2016/02/01 23:49:29 [MySensors] Set value '0' for node 254.2
2016/02/01 23:49:29 [Devices] Device with address '254.2' is 'Bedroom PIR'
2016/02/01 23:49:29 [Devices] ValueUpdate called for device with id '115' valuenum '1' and value '0'
2016/02/01 23:49:29 [MySensors] < 0;0;3;0;9;read: 142-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] Node:0; sensor-id:0; message-type:3; ack:0; sub-type:9; payload:read: 142-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] Gateway log message: read: 142-254-0 s=2,c=1,t=16,pt=0,l=1,sg=0:0
2016/02/01 23:49:29 [MySensors] < 142;2;1;0;16;0
2016/02/01 23:49:29 [MySensors] Node:142; sensor-id:2; message-type:1; ack:0; sub-type:16; payload:0
2016/02/01 23:49:29 [MySensors] Set value '0' for node 142.2
2016/02/01 23:49:29 [Devices] Device with type 'MySensors', address '142.2', instance 1' and interface 'MySensors Interface' not found!
2016/02/01 23:49:29 [Devices] Auto created device 'MySensors device #1' with address '142.2' of type 'MySensors Node' with interface 'MySensors Interface' and instance '1'
2016/02/01 23:49:29 [Devices] ValueUpdate called for device with id '341' valuenum '1' and value '0'
2016/02/01 23:49:29 [Devices] Device change triggered for device 'MySensors device #1' with 'value1' = '0'``````

I don't understand why it's creating these additional devices. I've checked the serial output of both of the arduinos, and I can't see anything relating to this in the output.

Any help would really be appreciated! Thanks!