Did you download the new examples? they are not included anymore.
Here you can find them:

https://github.com/mysensors/MySensorsArduinoExamples/tree/master/examples

I use V_LEVEL and S_MOISTURE for a moisture sensor.
The percentage part is something i am going to try for sure.

In the 2.0 sketch this is mentioned:

#define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No
So 0 should keep everything working and sens info even when not changed.

I don't know either and i remember that there should be a zip file which you can download.
I only cannot remember where.
For now you can copy the code and save it.

That is because UDP is enabled, if you uncomment the gateway stuff for the ENC28J60 then it compiles because UDP can be enabled now.

So remove the comment lines and add #define MY_USE_UDP at the end like suggested.

Thanks, i would not have found that by myself

I have an issue where a node stops sending sensor info after a while.
I do not have a log (yet) but i am wondering if a range issue would cause this.
Which reasons could cause a node stop sending info to the gateway?

If needed i can made a log later as i need my laptop connected to it and i cannot reach it at the moment.

yes add the line but only on non battery powered nodes.
If battery powered this will kill battery life.
I have a couple repeater nodes at home to extend the range.

That is quick
I will check ik out later.
Thanks

I think i will invest in suck a buck converter.
There is still plenty coming over from China so many projects to build and i rather do it right the first time.

yes add the line but only on non battery powered nodes.
If battery powered this will kill battery life.
I have a couple repeater nodes at home to extend the range.

In the 2.0 sketch this is mentioned:

#define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No
So 0 should keep everything working and sens info even when not changed.

I think you just have to comment out that part of the code (the 5 lines of code)

Thanks, i would not have found that by myself

I will buy one later
This is just to play with as i wanted to know how the battery measurement works.

And how do i downgrade AVR board devs?

I have voltage now and a percentage at the devices.
Hum and temp do work fine.
I only sucked all the juice out of the battery so it is charging now by the little solar panel.
I found out that 2,4V was really the lowest voltage that worked

I have the voltage part working and i think also the battery percentage with it.
I build the sketch like this. Can you have a little look?

/**
 * 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.
 *
 *******************************
 *
 * DESCRIPTION
 *
 * This is an example that demonstrates how to report the battery level for a sensor
 * Instructions for measuring battery capacity on A0 are available here:
 * http://www.mysensors.org/build/battery
 * 
 */



// Enable debug prints to serial monitor
#define MY_DEBUG 

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

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

#define CHILD_ID_BATT 0
#define CHILD_ID_HUM 1
#define CHILD_ID_TEMP 2

#define DHT_DATA_PIN 3 // Set this to the pin you connected the DHT's data pin to
int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point

// Set this offset if the sensor has a permanent small offset to the real temperatures
#define SENSOR_TEMP_OFFSET 0

static const uint64_t UPDATE_INTERVAL = 30000;

// Force sending an update of the temperature after n sensor reads, so a controller showing the
// timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
// the value didn't change since;
// i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
static const uint8_t FORCE_UPDATE_N_READS = 10;

//unsigned long SLEEP_TIME = 9000;  // sleep time between reads (seconds * 1000 milliseconds)
int oldBatteryPcnt = 0;

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
boolean metric = true; 

MyMessage msgBatt(CHILD_ID_BATT, V_VOLTAGE);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
DHT dht;

void setup()  
{
   // use the 1.1 V internal reference
#if defined(__AVR_ATmega2560__)
   analogReference(INTERNAL1V1);
#else
   analogReference(INTERNAL);
#endif
//}

{
dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
  if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
    Serial.println("Warning: UPDATE_INTERVAL is smaller than supported by the sensor!");
  }
  // Sleep for the time of the minimum sampling period to give the sensor time to power up
  // (otherwise, timeout errors might occure for the first reading)
  sleep(dht.getMinimumSamplingPeriod());
}
}
void presentation() {
   // Send the sketch version information to the gateway and Controller
   sendSketchInfo("Battery Meter", "1.0");

   present(CHILD_ID_BATT, S_MULTIMETER);
   wait(20);
   present(CHILD_ID_HUM, S_HUM);
   wait(20);
   present(CHILD_ID_TEMP, S_TEMP);
   wait(20);
   metric = getConfig().isMetric;

}
void loop()
{
   // get the battery Voltage
   int sensorValue = analogRead(BATTERY_SENSE_PIN);
   #ifdef MY_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_DEBUG
   float batteryV  = sensorValue * 0.003363075;
   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
     send(msgBatt.set(batteryV, 1));
    //sendBatteryLevel(batteryPcnt);
     oldBatteryPcnt = batteryPcnt;
   }

   {  
  // Force reading sensor, so it works also after sleep()
  dht.readSensor(true);
  
  // Get temperature from DHT library
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed reading temperature from DHT!");
  } else if (temperature != lastTemp || nNoUpdatesTemp == FORCE_UPDATE_N_READS) {
    // Only send temperature if it changed since the last measurement or if we didn't send an update for n times
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    temperature += SENSOR_TEMP_OFFSET;
    send(msgTemp.set(temperature, 1));

    #ifdef MY_DEBUG
    Serial.print("T: ");
    Serial.println(temperature);
    #endif
  } else {
    // Increase no update counter if the temperature stayed the same
    nNoUpdatesTemp++;
  }

  // Get humidity from DHT library
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
    Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum || nNoUpdatesHum == FORCE_UPDATE_N_READS) {
    // Only send humidity if it changed since the last measurement or if we didn't send an update for n times
    lastHum = humidity;
    // Reset no updates counter
    nNoUpdatesHum = 0;
    send(msgHum.set(humidity, 1));
    
    #ifdef MY_DEBUG
    Serial.print("H: ");
    Serial.println(humidity);
    #endif
  } else {
    // Increase no update counter if the humidity stayed the same
    nNoUpdatesHum++;
  }
   //sleep(SLEEP_TIME);
   sleep(UPDATE_INTERVAL);
   }}```

I have voltage now (utility) and a percentage under devices.
I have read somewhere that the percentage is depending on the last sensors poll so i will now try to add the DHT part in to the sketch.

sendBatteryLevel doesn't do anything.
I have modified it a bit and now i have some readings.
I will do a bit more playing to see where i will end.