Welcome to Techal, where we explore the world of technology and empower you with knowledge to create amazing projects. In this article, we will delve into the fascinating realm of home automation using ESP32, the powerful microcontroller, and Blynk IoT platform. Get ready to control your home devices with ease and convenience.
Contents
Introduction
Home automation has revolutionized the way we live, offering seamless control over our appliances and devices. With ESP32 and Blynk IoT platform, you can create a complete home automation system that allows you to control 8 relays using the Blynk app, IR remote, and manual switches. The best part? You don’t need any custom design PCB, and everything is free!
Getting Started with Home Automation
To kickstart your home automation project, you will need the following components:
- ESP32 microcontroller
- 8-channel relay module
- DHT11 temperature and humidity sensor
- 1838 IR receiver
- LDR (Light Dependent Resistor)
- Existing switchboard for manual control
The circuit setup is simple and can be achieved without a custom design PCB. However, for a more compact circuit, you can use a custom PCB. We recommend JLCPCB for affordable and high-quality PCB production.
Setting up the Blynk IoT Platform
- Create a Blynk cloud account and sign in. Visit Techal to access the article for the complete guide and code.
- Generate a template for your project on the Blynk IoT app and note down the Template ID and device name.
- Create datastreams for controlling the relays and retrieving sensor data (temperature, humidity, and LDR reading).
- Configure the Web dashboard by adding switch and label widgets to control the relays and display sensor data.
Coding and Uploading the Code
- Download the code from our website and install the ESP32 board and required libraries in the Arduino IDE.
- Update the template ID, device name, Wi-Fi name, and password in the code.
- Configure the IR remote by obtaining the HEX codes of the desired buttons and updating them in the code.
- Upload the code to the ESP32 microcontroller.
Bringing Your Home Automation System to Life
- Power up the ESP32 and connect all the components according to the circuit diagram.
- Connect your smartphone to the ESP32’s Wi-Fi hotspot and set up the home automation system using the Blynk IoT app.
- Enjoy the convenience of controlling your appliances using the Blynk app, IR remote, or manual switches, and monitor real-time feedback, including temperature, humidity, and LDR readings.
FAQs
Q: Can I make this project without using a custom design PCB?
A: Absolutely! The circuit setup can be done without a custom PCB. However, if you prefer a more compact design, you can opt for a custom PCB from JLCPCB.
Q: How can I obtain HEX codes for my IR remote?
A: You can find HEX codes for your IR remote buttons by following the instructions provided in our previous video. Simply update the HEX codes in the code to control the relays using your IR remote.
Conclusion
Home automation using ESP32 and Blynk 2.0 offers incredible possibilities in controlling your home devices. With the power of technology at your fingertips, you can effortlessly manage and monitor your appliances using the Blynk IoT app, IR remote, or manual switches. Visit Techal for the complete guide and code to embark on your home automation journey today.
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Disclaimer: The article is for informational purposes only. Techal is not affiliated with any brands mentioned in this article.
