#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>
#include <Wire.h>
#include <hd44780.h> // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header
const char SSID[] = "XXXX"; // Replace with your network SSID (WiFi name)
const char PASS[] = "XXXX"; // Replace with your network password
void onLED1D2Change();
bool lED1D2;
CloudTemperatureSensor t1; // Cloud variable for the first temperature sensor
CloudTemperatureSensor t2; // Cloud variable for the second temperature sensor
// Define the analog pins for the LM35 sensors
const int LM35Pin1 = A0;
const int LM35Pin2 = A1;
// Timing variables
unsigned long previousMillis = 0;
const long interval = 60000; // Interval at which to read temperatures (milliseconds)
// Initialize the LCD (hd44780_I2Cexp object)
hd44780_I2Cexp lcd;
void initProperties() {
ArduinoCloud.addProperty(lED1D2, READWRITE, ON_CHANGE, onLED1D2Change);
ArduinoCloud.addProperty(t1, READ, 60 * 1000); // Update every minute
ArduinoCloud.addProperty(t2, READ, 60 * 1000); // Update every minute
}
WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);
void setup() {
// Initialize serial and wait for port to open
Serial.begin(9600);
delay(1500);
// Initialize cloud properties
initProperties();
// Connect to Arduino IoT Cloud
ArduinoCloud.begin(ArduinoIoTPreferredConnection);
// Set debug message level
setDebugMessageLevel(2);
ArduinoCloud.printDebugInfo();
// Initialize pin 2 as an output
pinMode(2, OUTPUT);
// Initialize the LCD
lcd.begin(16, 2); // Set up the LCD's number of columns and rows
lcd.backlight(); // Turn on the backlight
// Print initial debug information
Serial.println("Setup complete. Beginning loop...");
}
void loop() {
ArduinoCloud.update();
// Check if the interval time has passed
unsigned long currentMillis = millis(); // Get the current time
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis; // Update the last time temperatures were read
// Read temperatures from the LM35 sensors
float temperature1 = readTemperature(LM35Pin1); // Read temperature from the first sensor
float temperature2 = readTemperature(LM35Pin2); // Read temperature from the second sensor
// Print temperature readings to the Serial Monitor for debugging
Serial.print("Temperature 1: ");
Serial.println(temperature1);
Serial.print("Temperature 2: ");
Serial.println(temperature2);
// Explicitly update cloud variables
ArduinoCloud.update();
// Debugging cloud sync
Serial.print("Updated Cloud t1: ");
Serial.println(t1);
Serial.print("Updated Cloud t2: ");
Serial.println(t2);
// Update the LCD display
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Temp1: ");
lcd.print(temperature1);
lcd.print(" C");
lcd.setCursor(0, 1);
lcd.print("Temp2: ");
lcd.print(temperature2);
lcd.print(" C");
// Update the cloud variables
t1 = temperature1;
t2 = temperature2;
}
}
// Function to read temperature from an LM35 sensor
float readTemperature(int pin) {
int reading = analogRead(pin); // Read the analog value from the specified pin
float voltage = reading * (5.0 / 1023.0); // Convert the analog value to a voltage
float temperatureC = voltage * 100.0; // Convert the voltage to temperature in Celsius
return temperatureC; // Return the temperature
}
// Function to handle changes in the lED1D2 variable
void onLED1D2Change() {
// Write to pin 2 based on the lED1D2 value from the cloud
digitalWrite(2, lED1D2 ? HIGH : LOW);
}
void ont1Change() {
Serial.println("t1 changed on the cloud");
}
void ont2Change() {
Serial.println("t2 changed on the cloud");
}
''
I updated my sketch to arduino r4 wifi The temperature can show on LCD and Serial monitor but show 0.00 in my dashboard Can anyone help me. Please.
This procedure is not intended to solve the problem. The purpose is to gather more information.