I had a look at the Home Assistant logs and I think I have been blaming the wrong beast, my code seems to be innocent.

I use appdaemon to execute actions in/from Home Assistant. There I can see exactly when a "ghost"-update was received.

Matching those timestamps with timestamps from the Home Assistant log was spot on:

Appdaemon log:

2020-03-11 09:38:23.092076 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 09:39:48.834817 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 09:48:03.398937 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 09:49:19.742706 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:05:24.735442 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:06:58.973448 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:38:26.141511 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:39:42.890820 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:47:59.874830 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 10:49:16.437996 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 11:15:23.592502 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 11:16:40.138025 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 11:18:05.195990 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 11:19:39.443632 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:27:05.469657 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:28:22.691106 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:35:15.985303 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:36:33.073911 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:40:29.881660 INFO Living_Room_IR: ir_value: 551505585
2020-03-11 12:42:01.804079 INFO Living_Room_IR: ir_value: 551505585

Here is the corresponding part of the home assistant log:

{"log":"2020-03-11 09:38:22 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T08:38:22.931537407Z"}
{"log":"2020-03-11 09:39:48 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T08:39:48.650792534Z"}
{"log":"2020-03-11 09:48:03 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T08:48:03.210220912Z"}
{"log":"2020-03-11 09:49:19 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T08:49:19.579932619Z"}
{"log":"2020-03-11 10:05:24 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:05:24.564205929Z"}
{"log":"2020-03-11 10:06:58 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:06:58.804235809Z"}
{"log":"2020-03-11 10:38:25 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:38:25.95710773Z"}
{"log":"2020-03-11 10:39:42 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:39:42.703318764Z"}
{"log":"2020-03-11 10:47:59 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:47:59.694853604Z"}
{"log":"2020-03-11 10:49:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T09:49:16.294815751Z"}
{"log":"2020-03-11 11:15:23 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T10:15:23.452517606Z"}
{"log":"2020-03-11 11:16:39 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T10:16:39.957885612Z"}
{"log":"2020-03-11 11:18:05 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T10:18:05.045447402Z"}
{"log":"2020-03-11 11:19:39 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T10:19:39.270413469Z"}
{"log":"2020-03-11 12:27:05 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:27:05.326243334Z"}
{"log":"2020-03-11 12:28:22 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:28:22.519338238Z"}
{"log":"2020-03-11 12:35:15 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:35:15.805191381Z"}
{"log":"2020-03-11 12:36:32 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:36:32.903939567Z"}
{"log":"2020-03-11 12:40:29 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:40:29.720752968Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:42:01.635196016Z"}

So it seems that every time a Node update was triggered Home Assistant was told that there was a new value received from the IR-sensor.

Here is the whole log from Home Assistant:

{"log":"2020-03-11 12:42:00 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:11494641 TSF:MSG:RE
AD,3-3-0,s=0,c=1,t=1,pt=7,l=5,sg=0:38.4\n","stream":"stderr","time":"2020-03-11T11:42:00.295978262Z"}
{"log":"2020-03-11 12:42:00 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 0\n","stream":"stderr","time":"2020-03-11T11:42:00.311538101Z"}
{"log":"2020-03-11 12:42:00 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 0: value_type 1, value = 38.4\n","stream":"stderr","time":"2020-03-11T11:42:00
.415847867Z"}
{"log":"2020-03-11 12:42:00 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:11495280 TSF:MSG:RE
AD,3-3-0,s=2,c=1,t=37,pt=7,l=5,sg=0:45.0\n","stream":"stderr","time":"2020-03-11T11:42:00.93325235Z"}
{"log":"2020-03-11 12:42:00 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 2\n","stream":"stderr","time":"2020-03-11T11:42:00.950559479Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 2: value_type 37, value = 45.0\n","stream":"stderr","time":"2020-03-11T11:42:0
1.058505324Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:11495962 TSF:MSG:RE
AD,3-3-0,s=255,c=3,t=0,pt=1,l=1,sg=0:22\n","stream":"stderr","time":"2020-03-11T11:42:01.618936799Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: n
ode 3 child 255\n","stream":"stderr","time":"2020-03-11T11:42:01.635196016Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 0: value_type 1, value = 38.4\n","stream":"stderr","time":"2020-03-11T11:42:01
.738527926Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 1: value_type 0, value = 22.4\n","stream":"stderr","time":"2020-03-11T11:42:01
.743098362Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 3: value_type 50, value = 624502100\n","stream":"stderr","time":"2020-03-11T11
:42:01.747319859Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 3: value_type 33, value = 551505585\n","stream":"stderr","time":"2020-03-11T11
:42:01.748432047Z"}
{"log":"2020-03-11 12:42:01 DEBUG (MainThread) [homeassistant.components.mysensors.device] Entity update:
mysensors_wohnzimmer_main 3 2: value_type 37, value = 45.0\n","stream":"stderr","time":"2020-03-11T11:42:0
1.752559045Z"}
{"log":"2020-03-11 12:42:02 DEBUG (SyncWorker_3) [mysensors.persistence] Saving sensors to persistence fil
e /config/mysensorsserial.json\n","stream":"stderr","time":"2020-03-11T11:42:02.441267303Z"}

Does anybody have an idea how I can prevent these updates? Or should I continue this thread in the Home Assistant forum of mysensors?

Seems you where both right. A short drained the battery (which I didn't notice) and getting rid of the short and using a new set of rechargeables solved the problem.

Thank you very much!

@mfalkvidd @phildefer

I can confirm that the code compiles and runs on my rasbperry pi 4 model b. I am using a rfm69 radio and that seems to be working too. I couldn't test it yet though since I haven't wired any rfm69 nodes up yet.

@mfalkvidd

I am a bit embarrassed that I didn't post them straight away. I'll collect a bit of data during the night and send the logs tomorrow. Thanks!

@mfalkvidd

Good catch, I didn't do that. Before I saw your message I checked the wiring and I introduced a new bug apparently because now the MQTT-gateway doesn't start anymore either, so I'll have to rewire.

I'll write again after I did that. Thanks for the help!

@sundberg84 I did, thanks, I discovered ISRs. Thanks for the support.

@mfalkvidd

I am planning on using a booster, so that's very good to know, thanks!

So this was either a faulty module or bad soldering. I soldered a new module and now everything works as expected. Thanks for the help!

@electrik perfect, thank you both!

I think this was solved by soldering a wire to the reset pin of the rfm69 and pin 29 of the raspberry pi and reconfiguring the gateway with

--extra-cxxflags="-DMY_RFM69_RST_PIN=29"

Now the connection is instant (before it was about 10-20 seconds IF it worked at all.

But since this is my first gig with electronics it might just be that I had a bad connection and moving the wires around fixed it....

Seems you where both right. A short drained the battery (which I didn't notice) and getting rid of the short and using a new set of rechargeables solved the problem.

Thank you very much!

Hi,

sorry for the cryptic topic-name, I'll try to elaborate.

I have build a node with an arduino pro mini 3.3, an rfm69, a temp sensor, a lux sensor and a door sensor using the easypcb. The node worked flawlessly and I mounted it above the door I wanted to monitor. Unfortunately I mounted it rather badly and it came down after two weeks.

It didn't turn on again and I saw that a part of the step up booster came loose, so I replaced the step up booster.

When I now attach my batteries to it (2 AA rechargables, 1.6V in total, measured with my multimeter) the status-led (not the power led, I desoldered that one) blinks shortly once but then stays silent and I am not receiving any messages on the gateway.

It all works as expected if I power the arduino with the FTDI-serial-adapter so I think the arduino is ok?

Two things I noticed: When I switch battery power on the status led blinks once, as I said. When I then turn the power off and immediately back on again it doesn't blink. I have to wait some time before it blinks again.

I measured the voltage at the screw terminal and there it is only 0.4V instead of the 1.6V I see when I measure it at the cables of the battery holder directly. I don't know whether that's expected or not, but I wanted to mention it.

Here are pictures of the node:

Thanks for any help!

I hope it is OK to post this here, I am not sure how to add this to the documentation, but my biggest pain point when starting out was that you have to use mysensors >2.2 when running on a raspberry pi 4, but the rfm gateway code has a bug in versions bigger than 2.2. I spent more than a week debugging that until I found the github issue and settled for a serial gateway, which I am very happy with, thank you mysensors!

If a warning could be put on the gateway page that would be great!

Hi,

Has anybody succeeded Inn creating an rfm69 version of this?

@mfalkvidd

I plugged my soldering iron in and you were right, the problem reappears. I only have that one wall socket in thqt corner of the apartment so I can't plug the switch into another wall socket, unfortunately.

Would one of those multi plugs work that come with an extra fuse to guard against lightning strike induced fluctuations?

/edit: forgot to mention I am using the official charger for the pi 4. I'll try to find a different one.

@mfalkvidd

That was a good catch! It's indeed the lamp. I removed the lamp from the switch and everything else being equal I I can now toggle the switch as much as I want without the gateway going bye bye.

The bulb is a "Osram dulux Superstar micro twist", 7w, 825 lumen, 220-240v, 7mA, 50/60Hz.

It works as expected when I take the bulb out of the socket. Can I somehow shield this or should I buy a new bulb?

Hi,

I have an unusual power issue and I hope somebody can tell me how to solve it:

I have a rfm69hw attached to an arduino pro mini 3v (as a serial gateway) attached to a raspberry pi 4 via USB. The setup works fine for the most part, but there is a plug attached to the same multi-socket the raspberry pi draws its power from.

Schema:

rpi4-> arduino pro mini3v -> rfm69hw
↑
multi-socket
↓
plug

The plug is a tasmota-flashed Gosund SP1 that turns a lamp on and off. When the lamp is turned off/on it sometimes kills the gateway. No messages are received until the gateway "decides" to come online again (after max 15 minutes):

2020-04-19 22:05:20 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:900026 !TSF:SAN:FAIL
2020-04-19 22:05:20 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:900034 TSM:FAIL:CNT=1
2020-04-19 22:05:20 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:900044 TSM:FAIL:DIS
2020-04-19 22:05:20 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:900052 TSF:TDI:TSL
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910063 TSM:FAIL:RE-INIT
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910071 TSM:INIT
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910082 TSM:INIT:TSP OK
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910090 TSM:INIT:GW MODE
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910100 TSM:READY:ID=0,PAR=0,DIS=0
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910112 TSM:READY:NWD REQ
2020-04-19 22:05:30 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:910127 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962252 TSF:MSG:READ,2-2-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962269 TSF:MSG:BC
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962277 TSF:MSG:FPAR REQ,ID=2
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962289 TSF:PNG:SEND,TO=0
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962299 TSF:CKU:OK
2020-04-19 22:06:22 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:962308 TSF:MSG:GWL OK
2020-04-19 22:06:23 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:963104 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
2020-04-19 22:06:24 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:964259 TSF:MSG:READ,2-2-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
2020-04-19 22:06:24 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:964278 TSF:MSG:PINGED,ID=2,HP=1

Output from home assistant.

When I put the plug/lamp-combo into another outlet I can toggle it as many times as I like without the gateway going down.

Does somebody know how I can stabilize the power so that the plug doesn't kill the gateway? I have a 470uF capacitor between GND and 3.3v on the rfm69hw already.

I found the issue. Everything works as expected when I use put the plug into another outlet. So this must be a power issue. I will create another thread for how to fix this.

Ok, so I think I have been getting at this the wrong way around...

Switching the switch on and off kills the integration/the gateway, it doesn't matter whether the node sent an ir-code to the gateway first. I verified this by opening lovelace and turning the switch on and off from there a few times. The result is that no new messages can be received from any nodes.

The switch in question is a tasmota flashed Gosund SP1 switch that has auto-discovery for Home Assistant activated (SetOption19). It connects to Home Assistant via mqtt. Since the gateway is a serial gateway I can't see how mqtt messages could kill the gateway.

@monte

If I get that correctly then that manual is about sending an IR-code to a node, but I am receiving an IR-code from a node. Based on that code I then want to do certain things, like turning a lamp on.

I am using a serial gateway, here is the corresponding config:

mysensors:
  gateways:
        - device: '/dev/ttyUSB0'
          baud_rate: 38400
  version: '2.3'

And here is the sketch of the node with the IR-receiver:

// Enable debug prints
//#define MY_DEBUG

#define MY_OWN_DEBUG

#ifndef MY_OWN_DEBUG //disable serial in production compile, potentially saves few uA in sleep mode
     #define MY_DISABLED_SERIAL
#endif


// Enable and select radio type attached
#define MY_RADIO_RFM69
#define MY_IS_RFM69HW
#define MY_RFM69_NEW_DRIVER


#define MY_NODE_ID 3
#include <MySensors.h>

// IR specific setup  
#include <IRremote.h>
int RECV_PIN     = 3;
IRrecv            irrecv(RECV_PIN);
decode_results    ircode;

unsigned long last_value;
// IR specific setup end

#define CHILD_ID_HUM  0
#define CHILD_ID_TEMP 1
#define CHILD_ID_LUX  2
#define CHILD_ID_IR 3

#define SKETCH_NAME "mysensors_wohnzimmer_main"
#define SKETCH_MAJOR_VER "1"
#define SKETCH_MINOR_VER "0"

static bool metric = true;

int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point
int oldBatteryPcnt = 0;

float lastHum = 0;
float lastTemp = 0;
int lastLux = 0;


// Sleep time between sensor updates (in milliseconds)
static const unsigned long UPDATE_INTERVAL = 90000;

#include <SI7021.h>
#include <BH1750.h>

static SI7021 tempsensor;
BH1750 lightmeter;


// Change to V_LIGHT if you use S_LIGHT in presentation below
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgLux(CHILD_ID_LUX, V_LEVEL);
MyMessage msgIrRecord(CHILD_ID_IR, V_IR_RECEIVE); 



void presentation()  
{ 
 // Send the sketch version information to the gateway and Controller
  sendSketchInfo(SKETCH_NAME, SKETCH_MAJOR_VER "." SKETCH_MINOR_VER);

  present(CHILD_ID_HUM, S_HUM);
   present(CHILD_ID_TEMP, S_TEMP);
  present(CHILD_ID_LUX, S_LIGHT_LEVEL);
  present(CHILD_ID_IR, S_IR);
}

void setup()
{
  //Serial.begin(9600);
  //Serial.print("Starting: ");
  while (not tempsensor.begin())
  {
    Serial.println(F("Temperaturesensor not detected!"));
    delay(5000);
  }
    #ifdef MY_OWN_DEBUG
    Serial.println("Tempsensor started");
  #endif
  lightmeter.begin();
  #ifdef MY_OWN_DEBUG
    Serial.print("UPDATE_INTERVAL:");Serial.println(UPDATE_INTERVAL);
  #endif
  irrecv.enableIRIn();
}


void loop(){
  int8_t wake_reason;
  //send(msgIrRecord.set(0));
  sleep_bod_disable();//disable BOD  - saves~ 15uA
  wake_reason = sleep(RECV_PIN-2, FALLING, UPDATE_INTERVAL);
  #ifdef MY_OWN_DEBUG
  Serial.print("wake_reason=");Serial.println(wake_reason);
  
  #endif
  if (wake_reason == 1){
    //woken up by interrupt on d3
    ir_received();
  }
  else{
    //woken by update_interval
    update_interval();
  }

  //send battery value
  //battery(); //TODO

}

void ir_received(){
  delay(100);
  detachInterrupt(RECV_PIN-2);
    
    if (irrecv.decode(&ircode)) {
      //#ifdef MY_OWN_DEBUG
      //dump(&ircode);
      //#endif
      unsigned long ir_value = ircode.value;
      if (ir_value == REPEAT) //if repeat-code: send last code
      {
         ir_value = last_value;
      }
      else{ //if not: save new value as last value
        last_value = ir_value;
      }
      #ifdef MY_OWN_DEBUG
      Serial.println(ir_value,HEX);
      Serial.println(ir_value);
      #endif
      
      send(msgIrRecord.set(ir_value));
      delay(150); //without this appdaemon doesn't have enough time to react.
      send(msgIrRecord.set(0));
      irrecv.resume(); // Receive the next value
    }
    //delay(100);


    Serial.println("IR Processing done--------------------");
}

void update_interval()      
{  
  #ifdef MY_OWN_DEBUG
  Serial.println("In loop");
  #endif
  // Read temperature & humidity from sensor.
  const float temperature = float( metric ? tempsensor.getCelsiusHundredths() : tempsensor.getFahrenheitHundredths() ) / 100.0;
  float roundedTemp = floorf(temperature * 10) / 10; //round temp down to 1 decimal
  const float humidity    = float( tempsensor.getHumidityBasisPoints() ) / 100.0;
  float roundedHum = floorf(humidity * 10) / 10; //round humidty down to 1 decimal

  lightmeter.configure(BH1750_ONE_TIME_HIGH_RES_MODE);
  //delay(500); // Allow some time
  const uint16_t lux = lightmeter.readLightLevel();

#ifdef MY_OWN_DEBUG
  Serial.print(F("Temp "));
  Serial.print(temperature);
  Serial.print(metric ? 'C' : 'F');
  Serial.print(F("\tHum "));
  Serial.println(humidity);

  Serial.print("Light: ");
  Serial.print(lux);
  Serial.println(" lx");

  Serial.println("-------");
#endif

  if (lastHum != roundedHum){
      #ifdef MY_OWN_DEBUG
        Serial.print("roundedHum: ");Serial.println(roundedHum);
      #endif
    send(msgHum.set(roundedHum, 1));
    lastHum = roundedHum;
  }

  if (lastTemp != roundedTemp){
    send(msgTemp.set(temperature, 1));
    lastTemp = roundedTemp;
  }

  if (lastLux != lux){
    send(msgLux.set(lux, 1));
    lastLux = lux;
  }

  //send battery value
  battery();



  // Sleep until next update to save energy
  //sleep_bod_disable();//disable BOD  - saves~ 15uA
  //smartSleep(UPDATE_INTERVAL); 
}

void battery(){
      // get the battery Voltage
    int sensorValue = analogRead(BATTERY_SENSE_PIN);
#ifdef MY_OWN_DEBUG
    Serial.println(sensorValue);
#endif

    // 1M, 470K divider across battery and using internal ADC ref of 1.1V
    // Sense point is bypassed with 0.1 uF cap to reduce noise at that point
    // ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
    // 3.44/1023 = Volts per bit = 0.003363075

    int batteryPcnt = sensorValue / 10;

#ifdef MY_OWN_DEBUG
    float batteryV  = sensorValue * 0.003363075;//3.44v
    //float batteryV  = sensorValue *   0.002541544; //2.6v
    Serial.print("Battery Voltage: ");
    Serial.print(batteryV);
    Serial.println(" V");

    Serial.print("Battery percent: ");
    Serial.print(batteryPcnt);
    Serial.println(" %");
#endif

    if (oldBatteryPcnt != batteryPcnt) {
        // Power up radio after sleep
        sendBatteryLevel(batteryPcnt);
        oldBatteryPcnt = batteryPcnt;
    }

}

The node is waken up by an interrupt when the ir-sensor reads a code. It also polls the other two sensors (temp/humid, lux) once every 90 seconds.