Project Idea
Develop a smart refrigerator system that uses IoT to monitor internal temperature, humidity, and item inventory. This system helps in food preservation, alerts users about open doors, and even sends notifications when items run low—making food management smarter and more efficient.
 
Project Description
The IoT-Based Smart Refrigerator project uses sensors and a Node MCU ( ESP32) to monitor key internal parameters such as temperature and humidity. It includes features like door status detection . Data is sent to a cloud platform (like Blynk,) allowing users to monitor and manage the fridge remotely using a smartphone. Alerts can be generated when the temperature rises beyond safe levels or when specific items are missing. This system not only prevents food spoilage but also promotes energy efficiency and smarter inventory control.
 
Components List
Node MCU (ESP32)
DHT11 Temperature
Humidity Sensor
IR Sensor (for door detection)
Jumper Wires
Breadboard
PCB
Power Supply
Cloud platform limited access(Blynk) 
 
Features
IoT-Based Monitoring via Wi-Fi
Real-Time Temperature & Humidity Data
Door Open/Close Status Alerts
Smartphone Notification System
Energy Efficient Food Management
Easy to Assemble and Customize
Supports Cloud Platforms
 
Project Applications
Home Refrigerators – Improve food management and reduce wastage through real-time monitoring.
Smart Kitchens – Integrate with other smart appliances for a connected kitchen ecosystem.
Pharmaceutical Storage – Ensure proper storage conditions for medicines and vaccines.
Restaurant & Cafeteria Management – Track inventory and avoid spoilage of perishable items.
Cold Storage Facilities – Remotely monitor temperature to prevent losses.
Educational Projects – Learn IoT integration, sensor usage, and data monitoring.
Supermarkets – Manage display fridges for inventory and temperature control.
Remote Alerts – Ideal for vacation homes or backup refrigerators to get alerts if systems fail.
 
Shipping Dimensions
Length: 20 cm
Width: 15 cm
Height: 10 cm
 
Weight: 800 grams
 
Shipping weight: 1kg (approx.)
 
Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code 
(For DIY KITs - only the components will be provided)
 
Project Types:
DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
DIY kit with source code and circuit connections - we are providing only components, source code and circuit connection in this kit for this project.
Breadboard based - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
Soldering/PCB based - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Note - For some projects the code & circuit diagram may not be provided and might have to be purchased separately
 
Notes -
All the products are made by LearnElectronics India and not for re-sale.
These project is a prototype project to show/present/explain and work like to real life product. It is not a product, if you need a ready-made product then reach out to us here.