Qt Creator in Raspbery Pi (pyQT)

3D Design:

Actual Prototype:

Code Arduno Nano: (UART Serial Communication to Raspberry Pi)

#include <DHT.h>

// Define the pins
#define DHTPIN 2      // Pin connected to the DHT22 data pin
#define DHTTYPE DHT22 // DHT 22 (AM2302)
#define SOIL_MOISTURE_PIN A0 // Analog pin connected to soil moisture sensor

#define wet 210
#define dry 1023

// Initialize the DHT sensor
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // Start serial communication
  Serial.begin(9600);
  
  // Initialize the DHT sensor
  dht.begin();
}

void loop() {
  // Read temperature as Celsius
  float temp = dht.readTemperature();
  // Read humidity
  float humidity = dht.readHumidity();
  // Read soil moisture sensor value
  int soilMoistureValue = analogRead(SOIL_MOISTURE_PIN);
  int moisturePercent = map(soilMoistureValue, dry, wet, 0, 100);

  // Check if any reads failed and exit early (to try again)
  if (isnan(temp) || isnan(humidity) || soilMoistureValue == 0) {
    Serial.println("Failed to read from sensors!");
    return;
  }

  // Create a string with the sensor values in the format val1,val2,val3
  String sensorData = String(temp) + "," + String(humidity) + "," + String(moisturePercent);

  // Send the string over Serial
  Serial.println(sensorData);

  // Delay for a second before sending the next values
  delay(1000);
}