ESP32 LED Control with Google Assistant | Step-by-Step Home Automation Project
✨ Want to build your own smart home project? In this tutorial, I’ll show you step by step how to control an LED bulb (or any AC appliance) using an ESP32 microcontroller, a Relay module, Sinric Pro, and Google Assistant. This project turns your simple electronics into a voice-controlled smart device — just say “Hey Google, turn on the light” and watch it work!
Whether you’re a beginner in IoT or already experimenting with ESP32 projects, this video covers everything: wiring, coding, connecting to Sinric Pro, and controlling your bulb with voice commands.
🔧 What You’ll Learn in This Video:
✅ How to connect a Relay module with ESP32 to control an LED bulb
✅ Step-by-step wiring on a breadboard (safe low-voltage demo setup)
✅ How to use Sinric Pro to link ESP32 with Google Assistant
✅ Writing and uploading ESP32 code for device control
✅ Testing the project with “Hey Google” commands
This project is beginner-friendly but also powerful — you can expand it to control fans, appliances, or even a full smart home automation system.
⏱️ Video Chapters:
0:00 Intro & Demo
0:42 Components Overview
1:16 Wiring Setup
4:22 Sinric Pro Setup
5:48 ESP32 Code Explained
7:44 Connecting Google Assistant
8:57 Live Testing – “Hey Google, Turn On The Desk LED”
9:32 Outro
🔗 Essential Links for This Tutorial
📂 Project Code on GitHub:
👉 https://github.com/shahrear-ab/robore...
🔧 Official Sinric Pro Website (Create Free Account):
👉 https://portal.sinric.pro/
📘 Sinric Pro Documentation:
👉 https://help.sinric.pro/
💡 Arduino IDE Download:
👉 https://www.arduino.cc/en/software
📦 ESP32 Board Installation Guide for Arduino IDE:
👉 https://randomnerdtutorials.com/insta...
⚡ Safety Note for Relay Projects:
👉 Always test with low voltage (like LED bulb demo) before working with AC appliances.
🔌 Components Used in This Project:
🔌 Components Used in This Project
ESP32 Development Board
https://amzn.to/45YGCf5
https://s.click.aliexpress.com/e/_oFj...
LED Bulb
https://amzn.to/4q1lb5d
https://s.click.aliexpress.com/e/_c3T...
Relay Module
https://amzn.to/4nS2nDd
https://s.click.aliexpress.com/e/_c3C...
Bulb Holder with Plug
https://amzn.to/4gNsRUg
https://s.click.aliexpress.com/e/_c3W...
Jumper Wires
https://amzn.to/4nsmsjA
https://s.click.aliexpress.com/e/_oou...
(These affiliate links help support the channel at no extra cost to you 🙏).]
💡 Why This Project is Perfect for Beginners
👉No prior coding knowledge needed
👉Uses cheap, widely available components
👉Shows real-world IoT application with Google Assistant integration
👉Fun and practical project that feels like building your own smart home gadget
📺 Also Watch Other Roborear Videos:
✅ Voice Reactive LEDs + Buzzer with ESP32 👉 • How to Create a Sound Activated LED with E...
✅ ESP32 Weather Station + Gas Detector 👉 • How to Build a ESP32 DIY Weather Station w...
✅ Top 4 Breadboard Connections You Need to Know 👉 • Top 4 Breadboard Connections You Need to K...
✨ This ESP32 + Relay + Google Assistant project is not only beginner-friendly but also expandable for advanced makers. You can upgrade it into a full home automation system by adding multiple relays, controlling fans, appliances, or even security lights with just your voice. Using Sinric Pro makes the integration seamless, and you’ll also understand how ESP32 connects to IoT platforms for future smart home projects.
📢 About Roborear
Hi, I’m Shahrear Abedin Bhuiyan, a Mechanical Engineering student at BUET. On Roborear, I share beginner-friendly robotics, electronics, and IoT projects to make STEM learning fun and easy. Subscribe for weekly tutorials and join the community!
📩 Contact Me
For collaboration, sponsorships, or project inquiries:
📧 Email: [email protected]
📢 Facebook Page: / roborearbd
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