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Доброго дня всем.

Я уже на пути отказаться от использования DallasTemperature. Для меня это уже слишком.

Но все же... MEGA 2560,  датчики висят на 14 PINe.

Пока висит открытый терминал на COM5 температура нормально читается.

Как только USB кабель отключаю, плата не зависает, но значения перстают читсаться и датчики не находятся и т.д.

Мой рабочий скетч очень большой, ради эксперимента сделал вот такую сборку. Эффект такой же.  Может кто из гуру сразу увидит пробелму?

#define BLYNK_PRINT Serial
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "345feecc001441f68da511b17f01d1ec";

IPAddress server_ip (192, 168, 0, 50);

// Mac address should be different for each device in your LAN
byte arduino_mac[] = { 0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xE1 };
IPAddress arduino_ip ( 192, 168,   0, 177);
IPAddress dns_ip     ( 192, 168,   0,   1);
IPAddress gateway_ip ( 192, 168,   0,   1);
IPAddress subnet_mask( 255, 255, 255,   0);

#define W5100_CS  10
#define SDCARD_CS 4

WidgetTerminal terminal(V127);

#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 14
#define TEMPERATURE_PRECISION 12

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

// arrays to hold device addresses
//DeviceAddress insideThermometer, outsideThermometer;
 DeviceAddress insideThermometer    = { 0x28, 0xC7, 0x03, 0x43, 0x98, 0xFF, 0x00, 0xAE };
 DeviceAddress outsideThermometer   = { 0x28, 0xC7, 0x03, 0x43, 0x98, 0xFF, 0x00, 0xAE };

void setup()
{
  // Debug console
  Serial.begin(9600);

  pinMode(SDCARD_CS, OUTPUT);
  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card

  Blynk.begin(auth, server_ip, 8080, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);
  // Or like this:
  //Blynk.begin(auth, "blynk-cloud.com", 80, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

  Serial.println("Dallas Temperature IC Control Library Demo");

  // Start up the library
  sensors.begin();

  // locate devices on the bus
  Serial.print("Locating devices...");
  Serial.print("Found ");
  Serial.print(sensors.getDeviceCount(), DEC);
  Serial.println(" devices.");

  // report parasite power requirements
  Serial.print("Parasite power is: ");
  if (sensors.isParasitePowerMode()) Serial.println("ON");
  else Serial.println("OFF");

  // method 1: by index
  if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0");
  if (!sensors.getAddress(outsideThermometer, 1)) Serial.println("Unable to find address for Device 1");

  // show the addresses we found on the bus
  Serial.print("Device 0 Address: ");
  printAddress(insideThermometer);
  Serial.println();

  Serial.print("Device 1 Address: ");
  printAddress(outsideThermometer);
  Serial.println();

  // set the resolution to 9 bit per device
  sensors.setResolution(insideThermometer, TEMPERATURE_PRECISION);
  sensors.setResolution(outsideThermometer, TEMPERATURE_PRECISION);

  Serial.print("Device 0 Resolution: ");
  Serial.print(sensors.getResolution(insideThermometer), DEC);
  Serial.println();

  Serial.print("Device 1 Resolution: ");
  Serial.print(sensors.getResolution(outsideThermometer), DEC);
  Serial.println();
  
}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    // zero pad the address if necessary
    if (deviceAddress[i] < 16) Serial.print("0");
    Serial.print(deviceAddress[i], HEX);
  }
}

// function to print the temperature for a device
void printTemperature(DeviceAddress deviceAddress)
{
  float tempC = sensors.getTempC(deviceAddress);
  Serial.print("Temp C: ");
  Serial.print(tempC);
  Serial.print(" Temp F: ");
  Serial.print(DallasTemperature::toFahrenheit(tempC));
}

// function to print a device's resolution
void printResolution(DeviceAddress deviceAddress)
{
  Serial.print("Resolution: ");
  Serial.print(sensors.getResolution(deviceAddress));
  Serial.println();
}

// main function to print information about a device
void printData(DeviceAddress deviceAddress)
{
  Serial.print("Device Address: ");
  printAddress(deviceAddress);
  Serial.print(" ");
  printTemperature(deviceAddress);
  Serial.println();
}

void printDataTerminal(DeviceAddress deviceAddress)
{
  terminal.print("Device Address: ");
  printAddressTerminal(deviceAddress);
  terminal.print(" ");
  printTemperatureTerminal(deviceAddress);
  terminal.println();
  terminal.flush();
}

void printAddressTerminal(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    // zero pad the address if necessary
    if (deviceAddress[i] < 16) terminal.print("0");
    terminal.print(deviceAddress[i], HEX);
  }
  terminal.flush();
}

void printTemperatureTerminal(DeviceAddress deviceAddress)
{
  float tempC = sensors.getTempC(deviceAddress);
  terminal.print("Temp C: ");
  terminal.print(tempC);
  terminal.print(" Temp F: ");
  terminal.print(DallasTemperature::toFahrenheit(tempC));
  terminal.flush();
}

void loop()
{
  Blynk.run();
    Serial.print("Requesting temperatures...");
  sensors.requestTemperatures();
  Serial.println("DONE");

  // print the device information
  printDataTerminal(insideThermometer);
  printDataTerminal(outsideThermometer);
}