ESP32 Alexa Home Automation System with Manual & Voice Control Feedback | IoT Projects 2021

In this IoT projects, I have shown how to make the ESP32 Alexa home automation system with manual & voice control 8 devices. You can also monitor the real-time feedback in the Amazon Alexa app. With this Alexa smart home project, you can also control the relays from the manual switches without the internet.

Download PCB Gerber file for this ESP32 IoT based home automation project

During the ESP32 tutorial video, I have covered all the following topics:
00:30 How to control 8 relays using ESP32 from Alexa App and switches.
03:02 Circuit diagram of the ESP32 Home Automation project.
04:37 Programming the ESP32 with Arduino IDE
06:46 How to add IoT devices & ESP32 with Amazon Alexa App.
07:49 Connect 8 home appliances with the smart relay module.
07:57 Controlling 8 appliances with voice and switches using the ESP32 control relays.

Required Components for this ESP32 home automation system
1. ESP32 DEV KIT V1
2. 8-channel 5V SPDT Relay Module
3. Switches or Push-Buttons
4. Amazon Alexa Echo Dot or any Alexa Devices.

Amazon United States Affiliate links:

Amazon India Affiliate links:

Required Components for the ESP32 control Relay Module PCB:
1. Relays 5v (SPDT) (8 no)
2. BC547 Transistors (8 no)
3. PC817 Optocuplors (8 no)
4. 510-ohm 0.25-watt Resistor (8 no) (R1 -- R8)
5. 1k 0.25-watt Resistors (10 no) (R9 -- R18)
6. LED 5-mm (10 no)
7. 1N4007 Diodes (8 no) (D1 -- D8)
8. Push Buttons (8 no)
9. Terminal Connectors
10. 5V DC supply

Download Code for this ESP32 smart house automation project

Previous Video on Alexa smart home:
ESP32 Alexa control relay without Alexa Echo dot

ESP8266 Alexa control relay without Alexa Echo dot

During the video, I have shared the circuit and code for this IoT project. So after watching the complete tutorial video you can easily make this ESP32 Alexa smart home project.

There is a limitation, the ESP32, and the echo dot smart speaker should be connected with the same wifi network.

Soon I will publish the complete article on my website and share the link here.

If you face any issues please let me know in the comment section.

#internetofthings #esp32 #Alexa
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[christopherlawes]

This looks AMAZING!!! Thank you so much for showing us this and NOT using Blynk etc., but using Alexa app. Perfect!

[eng.ahmedtaha]

Excellent, I tried it after ordering the PCB and it worked properly. Many thanks for your creative ideas

[jeelramani]

is it compulsory to have echodot to add this switches

[vishaljain]

I liked the most. Really wonderful as perform superb and at last all devices connected to Echo Dot. in this Home Automation Project, no need 3rd party App, this is the main features which is all above. Once again thanks a lot.

[mehuld]

I am trying same, but the esp32 board is not detecting by alexa app in android !!

[albinbiju]

Broo please esp8266 in same method please

[jeffmouton]

That is exactly what I was looking for. Thank you very much.👍

[oliverbechmann]

Very cool Project / A lot of work / The PCB looks very nice / It´s 1 of my next projekts. Thank you

[AnselmoBotelho]

Thanks for the video, you helped a lot !! Don't stop recording videos that teach you how to program and assemble the setups. Thanks!!

[ArtisanPallet]

Very useful home automation project using Alexa. Thanks for sharing.

[gabrielebasso]

You solved my problem. you're fantastic. Thank you!

[rjfc]

do you have a code for one relay module only? Because I only want to control one light bulb

[mvvkiran]

Very simple and professional approach. Especially loved the way you designed the PCB. Kudos!!

[DaniloLiaudet]

hi, could you please tell me the kind of connection that the light switch have so I can try find the same compatible, thanks...

[jeelramani]

Can I use this in my home daily? Means ye bigad nahi jaega na?

[akashmahor]

relay are normally close or Normally Open ?

[deepansharya]

Can this be done using Google home app also??

[mayankcreator]

If there is no internet even then also the manual switch either works or not

[blidnore]

Excelente implementación ingeniero gracias por compartir, un cordial saludo

[fernandozamora]

Wich programa you use to design your PCB?