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	- Project: Temperature Control
	- Source Code compiled for: ESP32 DevKit V1
	- Source Code created on: 2024-02-14 14:05:25

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* if user selects heat mode , turn on rely which */
	/* turns on peltier. Maintain temperature at 60 deg */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include 

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t Temp_DHT11_DOUT_PIN_D4 = 4;
const uint8_t HEAT_RELAY_PIN = 5; // Pin number for heat relay control

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
DHT dht(Temp_DHT11_DOUT_PIN_D4, DHT11);

/****** SYSTEM REQUIREMENTS *****/
const float targetTemperature = 60.0; // Target temperature in degrees Celsius

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(Temp_DHT11_DOUT_PIN_D4, INPUT_PULLUP);
  pinMode(HEAT_RELAY_PIN, OUTPUT);
  digitalWrite(HEAT_RELAY_PIN, LOW); // Start with heat relay off
  dht.begin();
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  float temperature = dht.readTemperature();

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

  // Print temperature value.
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C\t");

  // Check if temperature is below target temperature and turn on relay if true.
  if (temperature < targetTemperature)
  {
    digitalWrite(HEAT_RELAY_PIN, HIGH);
  }
  else
  {
    digitalWrite(HEAT_RELAY_PIN, LOW);
  }

  delay(2000); // Wait for 2 seconds before next reading.
}