IoT Project using ESP32 Google Assistant Blynk with Timer & Sensor | Home Automation System 2022

In this true home automation project, I have shown how to make an IoT project using ESP32 Google Assistant Blynk with the timer, sensor, and IR remote control relay with real-time feedback. You can also control appliances without internet from IR remote and manual switches.

Download the PCB Gerber file for ESP32 IoT Projects

For this ESP32 project, I have used the FREE plan of the Blynk IoT platform and explained all the steps to use Blynk Automation to control the relays with sensors and timers.

During this Internet of things tutorial video, I have covered the following topics:
00:30 Control appliances with Google Assistant Blynk & IR Remote
01:12 Controlling relays with DHT11 Sensor and Timer.
03:21 Required Components for the Blynk ESP32 IoT project.
03:36 Circuit of the ESP32 IoT Home Automation projects.
06:04 How to set up Blynk IoT cloud for ESP32.
09:53 Source Code for the Blynk ESP32 IoT project.
12:51 Set up Blynk IoT Application Mobile Dashboard.
13:57 How to add Automations in Blynk IoT (Timer and Sensor )
18:52 Controlling relays from Blynk App, IR remote, and switches.
19:17 Connect Blynk cloud with Google Assistant using IFTTT

Required Components for this ESP32 home automation system
1. ESP32 DEV KIT V1
2. 4-channel 5V SPDT Relay Module
3. TSOP1838 IR receiver (with metallic casing)
4. DHT11 temperature sensor
5. Switches or pushbuttons

Amazon India Affiliate links:

Amazon United States Affiliate links:

Download the Code for the ESP32 Blynk IoT project from the following article:

Previous Videos:

Important Links:

Important points:
1. You can turn ON/OFF the automation anytime from the Blynk IoT app.
2. IR receiver sensor must have a metallic casing. Otherwise, you may face issues while trying to get the Hex code.
3. The Blynk Automation will not work if the ESP32 is not connected to WiFi
4. You can control relays with switches & IR remote if WiFi is not available.
5. Install the correct version of the ESP32 board and libraries as mentioned in the code.
7. Please watch the complete video, otherwise you may face some issues.
**Please take proper safety precautions while working with high voltages.

During the tutorial video, I explained all the steps to make this IoT-based home automation system, and how to set up automation in the Blynk IoT platform.
In this ESP32 project, you can control the relays without internet from the IR remote and manual switches. ESP32 will automatically connect with the Blynk cloud when the internet comes back.
You can use any IR remote to control the relays, just get the HEX codes of unused IR remote buttons, and control the appliances with those buttons.
This smart relay module PCB can be used for different ESP32 projects which I will cover in upcoming videos.

#homeautomation #iotprojects #esp32
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WARNING:
This video is for demonstration and educational purposes only.
Each demonstration presents risks and hazards that must be fully understood before attempting.
And should be performed only by professionals
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Other useful IoT projects:
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[TechnoTrek_Gaming]

Bro I'm making this project If, I will face any problem than I can ask you.
Thanks for the nice project ☺️

[pmgs]

Nice Project Sir, Can u provide the link of the Design Files

[ahadhossain]

Bro I made a 6 channel home automation project for my college after watching your video.

🟢 Now I want to make another home automation project using 8 channels instead of 4 channels like this video, which will include google assistant control, 8 channel relay, temperature monitoring, IR remote control, manual control, blink app.
🙏🙏🙏 Please, please, please make a video like this.💝💝💝

[burhanuddinbhiwaniwala]

very nice but some off us would like to redesign the pcb according to our switch board and wall outlet.... please do share the schematic and not just the gerber file

[Shivam-trut]

Sir please replace GOOGLE Assistant with ALEXA and make a video

[wannurulizzah]

What type of switch did you use? 5v switch?

[shaktielectronics]

Sir Nodemcu with Blynk app+ Manual Switch+ IR rimote 4ch Home automation

[SC.k]

Very professional work, Thanks my friend ♥️♥️♥️♥️

[BABATECHNICALKNOWLEDGE]

nive video bro plz make video tuya devlopment

[keeper]

Thanks for video.Can you show us how to connect lora Ebyte e22 or e32 or sx1276/78 with esp32 or esp8266 to control relays?

[Gavriel]

Amazing project, thank you for sharing. Could you do a voice control of an analog signal, like controlling a servomotor position with google assistant?

[ahmedch]

The function decode(&results)) is deprecated and may not work as expected! Just use decode() without a parameter and . i face this issue plz tell me

[rollingstone]

can you please do ESP32 PCB design with 16 relays, IR, BL and wifi control, including 5V regulator. Basically only one ac in, and 16 switch control out. Controllable by IR, BL and wifi

[anandhurajeev]

Sir, pls uploade a vedio of home automation, it consists 16 Chanel relay, each realay control manually + IR+ BLINK

[Shivam-trut]

It is very usefull project and i have been seen other your projects that's are also amazing and very usefull

[saadlondonphone]

thanks for ur video, i have made some changes to use 8 relay , im getting error ""pin 5 not included in the scope " kindly advice

[Shivam-trut]

Sir es code ko ESP8266 m upload krne ke liye kya changes krne honge?

[วิจัยสําลี]

I tried uploading the code and got Compilation error: grpc: error while marshaling: string field contains invalid UTF-8 How to fix it?

[Shivam-trut]

Sir may you start playlist for IoT home automation. I want to teach from you

[Pola.Botros]

cloud we add an Arduino code when i press a button (ex:pin 5) for 10 seconds break the current process and create an access point to input WiFi-ssid and password and blynk authentication code then reconnect to wifi
in-case i changed the WiFi credential