The Smart Wardrobe Dehumidifier is an IoT-enabled system designed to maintain optimal environmental conditions inside wardrobes by intelligently controlling humidity, temperature, and air quality. The system continuously monitors humidity and temperature using a DHT11 sensor, and the collected data is uploaded to web for real-time remote monitoring and visualization. When a rapid increase or abnormal change in humidity is detected beyond the predefined threshold, the ESP32 microcontroller immediately activates the HEPA filter system through Relay. Air is forced through the HEPA filter, where excess moisture particles are absorbed, improving air circulation and reducing dampness inside the wardrobe. If the humidity level remains high or additional moisture is detected even after filtration, the system automatically activates a DC heating element through a relay. The heating element helps in further moisture absorption by increasing the air temperature, thereby accelerating the drying process. The system also monitors the operational status of the air filtration unit. In case of any malfunction or abnormal environmental condition, the ESP32 sends web-based alert notifications to the user, ensuring timely intervention. To maintain freshness, a relay-controlled fragrance spray mechanism is included, with the spray interval adjustable using a potentiometer (POT). An LCD display provides real-time information such as temperature, humidity values, system modes, and actuator status. The entire setup is powered by a rechargeable battery with an integrated charging circuit, ensuring portability and uninterrupted operation. Overall, the Smart Wardrobe Dehumidifier provides an efficient, automated, and intelligent solution to prevent mold formation, control excess moisture, eliminate odors, and maintain hygiene by combining sensor-based automation, HEPA filtration, controlled heating, and IoT-based alert mechanisms.      

The objectives of the project include:

 To continuously monitor the humidity and temperature inside the wardrobe using sensors.

 To detect rapid changes in humidity and prevent moisture accumulation.

 To automatically control the HEPA filter for air circulation and moisture absorption.

 To activate a DC heating element when excess moisture is not reduced by filtration.

 To prevent mold growth, dampness, and bad odor in stored clothes.

 To provide real-time display of sensor values and system status on an LCD.

 To generate alerts during abnormal environmental conditions or system failure.

 To maintain freshness inside the wardrobe using an automatic fragrance system.

 To design an energy-efficient, portable, and user-friendly dehumidification system.

   

The main building blocks of the project are:

 

• Charging circuit.
• Battery power supply.
• ESP32
• DHT11(temperature and humidity) sensor.
• Relay along with HEPA filter.
• Relay along with DC heating element.
• POT (potentiometer).
• LCD display.
• Relay along with Fragrance sprayer.

   

Software’s used:

 

• Arduino IDE studio compiler to write the program.
• Express SCH for Circuit design.
• IoT technology.

Block Diagram:

 

video: