Arduino cloud didn't get valid time

Development Tools Cloud IoT
1

I am having problems with the arduino cloud. I am currently using the esp32 wroom with a dht 11 sensor. But every time I get this error code;

ArduinoIoTCloudTCP::handle_SyncTime could not get valid time. Retrying now.
Humidity: 50.00% Temperature: 26.10°C
Humidity: 50.00% Temperature: 26.10°C
Humidity: 50.00% Temperature: 26.10°C
ArduinoIoTCloudTCP::handle_ConnectMqttBroker could not connect to iot.arduino.cc:8883 Error: -2
Humidity: 51.00% Temperature: 26.10°C

This is the code I am using:

#include "DHT.h"
#include "WiFi.h"
#include "ArduinoIoTCloud.h"
#include "Arduino_ConnectionHandler.h"

// Replace these with your network credentials
const char SSID[] = "*****";
const char PASS[] = "****";

#define DHTPIN 12
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

CloudLight led;
CloudTemperatureSensor temperature;
CloudRelativeHumidity humidity;

WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);

// Initialize properties and configure the device
void initProperties() {
  ArduinoCloud.setThingId("*****");
  ArduinoCloud.addProperty(humidity, READ, ON_CHANGE, NULL);
  ArduinoCloud.addProperty(temperature, READ, ON_CHANGE, NULL);
  ArduinoCloud.addProperty(led, READWRITE, ON_CHANGE, onLedChange);
}

// This function will be called when the 'led' property changes
void onLedChange() { 
  if (led == 1) {
    digitalWrite(2, HIGH);
  } else {
    digitalWrite(2, LOW);
  }
}

void setup() {
  // Initialize serial and wait for port to open:
  Serial.begin(9600);
  pinMode(2, OUTPUT);

  // This delay gives the chance to wait for a Serial Monitor without blocking if none is found
  delay(1500); 

  // Initialize properties
  initProperties();

  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  
  // Set debug message level
  setDebugMessageLevel(2);
  ArduinoCloud.printDebugInfo();
  
  // Start the sensor
  dht.begin();
}

void loop() {
  ArduinoCloud.update();
  delay(2000);

  // Read humidity
  float h = dht.readHumidity();

  // Read temperature as Celsius
  float t = dht.readTemperature();

  // Check if any reads failed and exit early (to try again)
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Update the cloud variables
  humidity = h;
  temperature = t;
  
  // Print data to serial monitor
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print("% Temperature: ");
  Serial.print(t);
  Serial.println("°C");
}

Thanks in advance

2

Hi! Code reported here is not handling correcly authentication for a secret based board (like ESP32). For example, it is missing definition of secret device key:

  ArduinoCloud.setBoardId(DEVICE_LOGIN_NAME);
  ArduinoCloud.setSecretDeviceKey(DEVICE_KEY);

Device key is generated at baord provisioning time.
You can also remove .setThingId() call.
I suggest you to start from a code template generated in Wed Editor and take a look at auto-generated thingProperties.h file. Cloud connection code is automatically genarated based on your board by cloud web editor.

Regards

3

@pixelfibre
I'll be curious to know how that goes for you, that is, if yours goes this way --

4

@macolomb

I tried another code but I still get the same error code.

Code:

#include <DHT.h>
#include "thingProperties.h"

// Initialize DHT sensor
#define DHTPIN 12     // Pin where the DHT11 sensor is connected
#define DHTTYPE DHT11 // Define the type of DHT sensor

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  delay(1500);

  dht.begin();
  initProperties();
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  setDebugMessageLevel(4); // Set debug level to get detailed info
  ArduinoCloud.printDebugInfo();
}

void loop() {
  ArduinoCloud.update();
  
  // Read temperature and humidity
  float temperatureValue = dht.readTemperature(); // Read temperature as Celsius
  float humidityValue = dht.readHumidity();      // Read humidity as percentage

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperatureValue) || isnan(humidityValue)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Update cloud variables
  temperature = temperatureValue;
  humidity = humidityValue;

  // Print values to serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureValue);
  Serial.print(" °C");
  Serial.print("\tHumidity: ");
  Serial.print(humidityValue);
  Serial.println(" %");

  // Delay between reads
  delay(2000);
}

Error code:

Connected to "Upstairs"
Temperature: 29.10 °C	Humidity: 52.00 %
ArduinoIoTCloudTCP::handle_SyncTime could not get valid time. Retrying now.
TimeServiceClass::sync  Drift: 0 RTC value: 1722346012
Temperature: 29.10 °C	Humidity: 52.00 %
Temperature: 29.10 °C	Humidity: 52.00 %
ArduinoIoTCloudTCP::handle_SyncTime could not get valid time. Retrying now.
Temperature: 29.10 °C	Humidity: 52.00 %
Temperature: 29.10 °C	Humidity: 52.00 %
TimeServiceClass::sync  Drift: 0 RTC value: 1722346025
Temperature: 29.10 °C	Humidity: 52.00 %
ArduinoIoTCloudTCP::handle_ConnectMqttBroker could not connect to iot.arduino.cc:8884 Error: -2
Temperature: 29.10 °C	Humidity: 52.00 %

Thanks in advance

5

I have the same problem with the “IOT Blink controller” using an Arduino Nano Esp 32.

6

A post was split to a new topic: Connected to Wi-Fi network, but Arduino Cloud says Device is "offline"

7

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