You'll have to edit your mysensors.json file (or the name you have at configuration.yaml), and remove the node from that file, with homeassistant stopped before. Normally the format is <node number>: { <lot of data> }.
This is one of my nodes from HA file.

"1": {"sensor_id": 1, "type": 17, "sketch_version": "1.0", "battery_level": 52, "protocol_version": "2.0.0-beta", "sketch_name": "Contact1", "children": {"0": {"id": 0, "type": 0, "values": {"16": "0"}}}}

Just delete that part, and start HA again.

On your sketch... (from https://www.mysensors.org/download/sensor_api_15)

 gw.sendBatteryLevel(batteryLevel);

But you'll have to measure batteryLevel before someway

@sundberg84 No worry, I talked with hek and he finded that was a pcbway mistake. BTW...very good job with the PCB, I'm using it with a lot of my sensors

@sundberg84 Any idea why I've received a "2nd version" of your Rev.8 from PCBWay for free? By free I mean that I bought 10x your Rev.8 about 2 months ago (Black in the photo), but today I've got a package from China and when I opened I got that other PCB that I haven't ordered
I don't see any changes regarding the radio capacitor. Any clue?

You'll have to edit your mysensors.json file (or the name you have at configuration.yaml), and remove the node from that file, with homeassistant stopped before. Normally the format is <node number>: { <lot of data> }.
This is one of my nodes from HA file.

"1": {"sensor_id": 1, "type": 17, "sketch_version": "1.0", "battery_level": 52, "protocol_version": "2.0.0-beta", "sketch_name": "Contact1", "children": {"0": {"id": 0, "type": 0, "values": {"16": "0"}}}}

Just delete that part, and start HA again.

@masterkenobi said:

There is also another thing concern me. What if my neighbor also into Mysensors? Will he be able to view all the data from my sensors? How do I secure the nodes?

Take a look at https://forum.mysensors.org/topic/1021/security-introducing-signing-support-to-mysensors

Here you have a sample of one of my battery nodes. Now I'm using V2.0 of Library, but this used to work before updating

#include <MySensor.h>  
#include <SPI.h>
#include <BH1750.h>

#define SN "SensorLuz"
#define SV "1.0"
unsigned long SLEEP_TIME = 300000; // 5 minutos
#define CHILD_ID_LIGHT 0
#define NODE_ID 7

#define VBAT_PER_BITS 0.003363075  
#define VMIN 1.9                                  //  Vmin (radio Min Volt)=1.9V (564v)
#define VMAX 3.0                                  //  Vmax = (2xAA bat)=3.0V (892v)
int batteryPcnt = 0;                              // Calc value for battery %
int batLoop = 0;                                  // Loop to help calc average
int BATTERY_SENSE_PIN = A0; 

MySensor gw;
BH1750 lightSensor;

uint16_t lastlux;

MyMessage msgLux(CHILD_ID_LIGHT, V_LEVEL);
MyMessage msgLuxUnit(CHILD_ID_LIGHT, V_UNIT_PREFIX);

void setup()  
{  
   analogReference(INTERNAL);

  gw.begin(NULL, NODE_ID);
  lightSensor.begin();
  gw.sendSketchInfo(SN, SV);
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
  gw.send(msgLuxUnit.set("lux"));

}

void loop()     
{     

  uint16_t lux = lightSensor.readLightLevel();
  Serial.print("Lux: ");
  Serial.println(lux);
  if (lux != lastlux) {
      gw.send(msgLux.set(lux));
      lastlux = lux;
  }
  batM();
  
  gw.sleep(SLEEP_TIME);
}

void batM() //The battery calculations
{
   delay(500);
   int sensorValue = analogRead(BATTERY_SENSE_PIN);    
   delay(500);
   
   float Vbat  = sensorValue * VBAT_PER_BITS;
   int batteryPcnt = static_cast<int>(((Vbat-VMIN)/(VMAX-VMIN))*100.);
   //Serial.print("Battery percent: "); Serial.print(batteryPcnt); Serial.println(" %");  
   
  
   if (batLoop > 24) {  //24 ciclos de 5 min = 2h.
     gw.sendBatteryLevel(batteryPcnt);
     batLoop = 0;
   }
   else 
   {
   batLoop++;
   }
}

Just received DIY kit (My Slim 2AA node), and they sent me SMD NRLF24+, not the standard Do I have to contact them?

On your sketch... (from https://www.mysensors.org/download/sensor_api_15)

 gw.sendBatteryLevel(batteryLevel);

But you'll have to measure batteryLevel before someway

How do we know order's state for buyed DIY kits from OH? I ordered a kit Saturday and haven't received any news from PCBWay or OH since then.
I tried searching PCBWay site but no luck.

@martinhjelmare

And there was the fail !! :s

Installed 1.5.4 and now it runs in the right manner.

Thank you!!

@martinhjelmare

I tried your sketch as is, just to try one leg for the RGB Led, but I'm not getting the expected result. When I change the brightness from the HA UI slider, the node gets the correct value, but...

send: 12-12-0-0 s=255,c=3,t=15,pt=2,l=2,sg=0,st=ok:0
send: 12-12-0-0 s=255,c=0,t=17,pt=0,l=5,sg=0,st=ok:1.5.3
send: 12-12-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
sensor started, id=12, parent=0, distance=1
send: 12-12-0-0 s=1,c=0,t=26,pt=0,l=0,sg=0,st=ok:
send: 12-12-0-0 s=255,c=3,t=11,pt=0,l=11,sg=0,st=ok:DimmableLED
send: 12-12-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.1
send: 12-12-0-0 s=1,c=2,t=3,pt=0,l=0,sg=0,st=ok:
send: 12-12-0-0 s=1,c=1,t=2,pt=2,l=2,sg=0,st=ok:0
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:0
send: 12-12-0-0 s=1,c=1,t=40,pt=0,l=6,sg=0,st=ok:ffffff
read: 0-0-12 s=1,c=1,t=2,pt=0,l=1,sg=0:1
Changing level to 100, from 0
send: 12-12-0-0 s=1,c=1,t=2,pt=2,l=2,sg=0,st=ok:1
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100
read: 0-0-12 s=1,c=1,t=3,pt=0,l=2,sg=0:17   // <- Here I modified brightness
Changing level to 100, from 100
send: 12-12-0-0 s=1,c=1,t=2,pt=2,l=2,sg=0,st=ok:1
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100
read: 0-0-12 s=1,c=1,t=3,pt=0,l=1,sg=0:9  // <- Here too
Changing level to 100, from 100
send: 12-12-0-0 s=1,c=1,t=2,pt=2,l=2,sg=0,st=ok:1
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100

As you see, no matter what level receives, It goes to 100 forever.
And if you try to move the brightness slider more over to the right (or the left to reduce), the values sometimes get higher than 100 (or -100), despite of the "clipping" method of the sketch.

EDIT:

Made a few changes to the code, to find what's failing, and I think is the way HA sends commands to the node;

...

  if (message.type == V_DIMMER) {

    //  Retrieve the power or dim level from the incoming request message
    int requestedLevel = atoi(message.data);
    Serial.print("Received: ");
    Serial.println(message.data);
    Serial.print("Bright: ");
    Serial.println(requestedLevel);
...

And the log from the sensor:

send: 12-12-0-0 s=255,c=3,t=15,pt=2,l=2,sg=0,st=ok:0
send: 12-12-0-0 s=255,c=0,t=17,pt=0,l=5,sg=0,st=ok:1.5.3
send: 12-12-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
sensor started, id=12, parent=0, distance=1
send: 12-12-0-0 s=1,c=0,t=26,pt=0,l=0,sg=0,st=ok:
send: 12-12-0-0 s=255,c=3,t=11,pt=0,l=11,sg=0,st=ok:DimmableLED
send: 12-12-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.1
send: 12-12-0-0 s=1,c=2,t=3,pt=0,l=0,sg=0,st=ok:
read: 0-0-12 s=1,c=1,t=3,pt=0,l=3,sg=0:100
Received: 100mableLED
Bright: 100
Changing level to 100, from 0
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100
send: 12-12-0-0 s=1,c=1,t=2,pt=2,l=2,sg=0,st=ok:1
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100
send: 12-12-0-0 s=1,c=1,t=40,pt=0,l=6,sg=0,st=ok:ffffff
read: 0-0-12 s=1,c=1,t=3,pt=0,l=2,sg=0:45
Received: 450mableLED
Bright: 450
Changing level to 100, from 100
send: 12-12-0-0 s=1,c=1,t=3,pt=2,l=2,sg=0,st=ok:100

Seems there is a string of the message (sketch name maybe) messing with the brightness data.