Home automation is a modern technology that modifies your home to perform different sets of tasks automatically.

In this project, I will be explaining you about my IoT Home automation using Google Home Mini and Arduino. You will be needing the Blynk and IFTTT apps for this project.

Hardware components used in this project

NodeMCU DEVKIT 1.0
Google Home Mini
Breadboard power supply module - 3.3V/ 5V
Solderless Breadboard - Half +
Relay module (x4) - 5V single channel
5V DC mini water pump - Submersible
Solenoid door lock - 12V DC
RGB LED - Common anode
Resistors (x3) - 220Ω
Male-to-Male Jumper wires
Female-to-Male Jumper wires
Plug extension
Voltage regulator/ 12V DC power adapter

Apps used in this project

Arduino IDE
Blynk App
If This Then That App - IFTTT

Tools used in this project

Standard Screwdriver (aka Flat head screwdriver)
Soldering iron
Solder

Setup

Connections

Relay module - 5V single channel

(+) - 5V
(-) - Ground (GND)
S (Pedestal Fan) - D1
S (Soldering station) - D2
S (Water pump) - D3
S (Solenoid door lock) - D4

RGB LED - common anode

Red - D5
Green - D6
Red - D7
(+) - 5V

Coding

For this project, you will be needing the Blynk and IFTTT app. To get started with Blynk, please visit this link:

https://blynk.io/en/getting-started

Use the example code builder to choose your hardware model and connectivity type, and copy the whole code to buffer.

Upload this code to your Microcontroller board and connect your board with Blynk app. Visit ifttt.com to get started with IFTTT. Create applets using Google Assistant and Webhooks services. Make sure that you use the same gmail address for the IFTTT account and your Google Assistant/ Google Home Mini.

Here is an example of my applet used to switch on the fan:

If anyone has any questions with the coding, please feel free to comment below or send me an email at arduinoprojectsbyr@gmail.com.

Final Look

If anyone has any questions, or suggestions, with this project, please feel free to comment below.

EXPANDED TECHNICAL DETAILS

Voice-First Smart Home Ecology

This project integrates the high-level Google Assistant AI with low-level Arduino hardware, creating a seamless voice-controlled living space.

Service Orchestration: Uses IFTTT (If This Then That) as the middle-ware. A voice command like "Hey Google, turn on my desk lamp" triggers a webhook.
Microchip Execution: The webhook is captured by Adafruit IO or Blynk cloud. The Arduino (connected via an ESP8266 or WiFi-enabled board) polls this cloud status and toggles a 5V Relay Module accordingly.

Scalability

Multi-Device Support: The architecture supports dozens of independent nodes, allowing for the voice control of fans, coffee machines, and window blinds through a single Google Home Mini speaker.

title: "IoT Home automation using Google Home Mini and Arduino" description: "Control your home with Google Home mini. Customized Google smart home." author: "RucksikaaR" category: "" tags: - "voice control" - "home automation" - "internet of things" views: 13851 likes: 1 price: 2450 difficulty: "Intermediate" components: - "1x Resistor 220 ohm" - "4x Gravity: Digital 5A Relay Module" - "1x Linear Solenoid, 12 VDC" - "1x Male/Male Jumper Wires" - "1x Male/Female Jumper Wires" - "1x Solder Wire, Lead Free" - "1x SparkFun Breadboard Power Supply 5V/3.3V" - "1x RGB Diffused Common Anode" - "1x NodeMCU ESP8266 Breakout Board" - "1x Solderless Breadboard Half Size" - "1x Soldering iron (generic)" - "1x Multitool, Screwdriver" tools: [] apps: - "1x IFTTT" - "1x Arduino IDE" - "1x Blynk" downloadableFiles: [] documentationLinks: [] passwordHash: "0fea7172d2d8c311322cbdd0078ebded1c132f9641388cb52dca56cc2fe50650" encryptedPayload: "U2FsdGVkX18YYMwe90xSqCzbZ0FMsyGeEZa4xFtpLcz3PQR6r0OZJrMFhZUtknggHyNTplB2TuPEFHDLQFQvPqUItfuwWIBW5//Ock6LJSjbyDa2LjLlMFinpOnJS8je" seoDescription: "Build an IoT Home automation system with Google Home Mini and Arduino. Create your own customized DIY Smart Home." videoLinks: - "https://www.youtube.com/embed/EEWwbh6yTnc" heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/iot-home-automation-using-google-home-mini-and-arduino-f86778_cover.jpg" lang: "en"