ESP32 Blynk IoT Based Home Automation
Control and monitor home appliances remotely using ESP32 and Blynk IoT platform through a mobile application.
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₹3221.00
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Components
7 items
Difficulty
Intermediate
Build Time
1.5 – 3 hours
Project Details
How It Works
How It WorksThe ESP32 connects to Wi-Fi and authenticates with Blynk cloud using an auth token. The Blynk mobile app sends commands via virtual pins (e.g., V0) which are received by the ESP32. The ESP32 processes these commands and controls the relay module through GPIO pins. The relay switches AC appliances on/off. Status updates are sent back to the app for real-time monitoring. All communication happens securely over the internet through Blynk's cloud infrastructure.
Prerequisites
Basic knowledge of electronics and microcontrollers, familiarity with Arduino IDE, understanding of Wi-Fi and internet concepts, and experience with simple circuit assembly.
What You'll Learn
What You'll LearnConnecting ESP32 to Blynk cloud services
Creating and using mobile dashboards for IoT
Understanding remote device communication over internet
Using virtual pins for data exchange between app and device
Deploying IoT systems for practical applications
Key Features
Control appliances from smartphone using Blynk app
Access devices from anywhere via internet connection
Instant control and monitoring of devices
Receive alerts and status updates on mobile device
Customize mobile app interface with widgets
What's Included in the Kit
| Component | Qty | Price |
|---|---|---|
 | 1 | ₹1682.00 |
 | 1 | ₹0.00 |
 | 1 | ₹0.00 |
 | 1 | ₹171.00 |
 | 1 | ₹190.00 |
 | 1 | ₹0.00 |
 | 1 | ₹0.00 |
Operating Instructions
Pin Connections
Pin Connections| MCU Pin | Connected To | Purpose | Notes |
|---|---|---|---|
| GPIO 2 | Relay IN | Digital output for relay control | Active LOW logic for relay activation |
| 5V | Relay VCC | Power supply for relay module | Ensure voltage compatibility |
| GND | Relay GND | Common ground connection | Essential for circuit completion |
Tools Required
Tools RequiredSafety Precautions
Electrical
- ⚠High Voltage Alert - Disconnect AC mains while wiring
- ⚠Use opto-isolated relays for safety
- ⚠Keep ESP32 away from live AC wires
- ⚠Use proper casing for AC connections
Frequently Asked Questions
Frequently Asked QuestionsQ:Is Blynk free?
Q:Can multiple devices be controlled?
Q:Does it work outside home network?
Q:Can sensors be added?
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