Why do "passive nodes" need to set their Node ID manually?

[NeverDie]

Hmmm...., I get this compile time error if I remove the static ID:

 #error MY_PASSIVE_NODE configuration requires setting MY_NODE_ID

[mfalkvidd]

@NeverDie seems my inexperience with passive nodes is clear. Sorry for misleading you.

[NeverDie]

Which MySensor example should I use, then, for a TH sensor? I want it to report temperature, humidity, and battery voltage. And I want Domoticz to be able to graph all three (including negative temperature values). I was surprised that none of the given examples was exactly this. What do you recommend?

[mfalkvidd]

@NeverDie I have no idea. The passive node is a bit of a hack, since MySensors nodes were initially designed to always have a path to the gateway. Hacks usually have unintended side-effects and it appears you have found one of those side-effects.

[NeverDie]

@mfalkvidd OK, but setting the passive node sketch aside, which of the other "normal" example sketches do you recommend?

[mfalkvidd]

@NeverDie I'm not sure what you mean. any example should work. That's what they are for :)

[smilvert]

@NeverDie

I have started to test node-red (Which dont work yet...) so I have created a dummy sketch for parse the data to domoticz.

// Enable debug prints
#define MY_DEBUG
#define MY_GATEWAY_SERIAL

// Enable passive mode
#define MY_PASSIVE_NODE
#define MY_REPEATER_FEATURE

// Passive mode requires static node ID
#define MY_NODE_ID 0

// Enable and select radio type attached
// #define MY_RADIO_NRF24
//#define MY_RF24_PA_LEVEL RF24_PA_HIGH

//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

#include <MySensors.h>

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_BINARY 2

// Initialize general message
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgBinary(CHILD_ID_BINARY, V_STATUS);
int counter = 0;
float temperature = 0;
float humidity = 0;
int binary = 0;
void setup()
{
}

void presentation()
{
  // Send the sketch version information to the gateway and controller
  sendSketchInfo("Passive node", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_TEMP, S_TEMP);
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_BINARY, S_BINARY);
}

void loop()
{
  // generate some random data
  counter ++;
  if (counter == 20 ){
    temperature = 0;
    humidity = 0;
    counter = 0;
  }
  else
  {
    temperature = 25.0 + random(0,30)/10.0;
    humidity = 55.0 + random(-20,20);
  }
/*
  if (binary == 0){
    send(msgBinary.set(binary,2));
    binary = 1;
  }else {
    send(msgBinary.set(binary,2));
    binary = 0;

  }
*/
  send(msgTemp.set(temperature,2));
  send(msgHum.set(humidity,2));
  wait(1000);
}

[NeverDie]

@smilvert I guess it's destiny then: Node Red + MQTT

[smilvert]

@NeverDie

Well I wanted to filter noise values and I also want to use influx/grafana as a complement to domoticz

[NeverDie]

@smilvert So, do you have the gateway connected directly to Node Red, which then feeds Domoticz and also feeds influx/grafana? I think I want to do the same, if that's how to do it.

[smilvert]

@NeverDie
that's the idea but it is not 100 % yet but I working on it.

[NeverDie]

@smilvert I think @Toyman said he has it figured out. Maybe he can tell us how he did it?

[rmtucker]

@NeverDie
Just cut domoticz out of the picture as node-red/influx/grafana works perfect with any gateway serial/ethernet/mqtt.
I prefer the serial gateway in my own experience is the most stable and no reliance on wifi routers and things.
Domoticz has nowhere near the same flexibility when graphing etc.

[NeverDie]

@rmtucker Ahhhhhh, that's right, it was rmtucker, not toyman, who had done it: https://forum.mysensors.org/topic/6961/nrf5-bluetooth-action/1078

[tekka]

@NeverDie @mfalkvidd Passive nodes communicate without message ACKs - ID requests may never make their way to the controller, hence the requirement of a static node ID.

[NeverDie]

@tekka In that case couldn't it just keep retrying until it received its ID?

[tekka]

@NeverDie No, that's not the idea of a passive node. However, with

void transportTogglePassiveMode(const bool OnOff)

you can enable the passive transport mode, see here for additional information (>=2.2.0)

[NeverDie]

@smilvert Got it working: https://www.openhardware.io/view/510/Multi-Sensor-TempHumidityPIR-LeakMagnetLightAccel#tabs-source

I cited you in the credits at the beginning of the sketch.