Arduino IoT Cloud with Alexa Home Automation using ESP8266 Arduino UNO & sensor - IoT Projects 2022

In this IoT project, I have shown you how to make the Arduino IoT Cloud with Alexa home automation system using NodeMCU ESP8266, and Arduino UNO to control relays with voice commands, IR remote, and manual switches. You also monitor the room temperature and real-time feedback in the Amazon Alexa app. I have used all the FREE tools for this IoT-based smart home system.

Download PCB Gerber file for the Arduino IoT based home automation project

During the Arduino IoT Cloud tutorial video, I covered the following topics:
00:02 Features of this Arduino IoT Cloud project
00:40 How this IoT project works with Arduino ESP8266.
02:00 Required Components for the Arduino IoT Project.
02:20 Circuit of ESP8266 Arduino home automation project.
04:54 How to configure Arduino IoT Cloud account for NodeMCU.
08:18 Source Codes for this Arduino ESP8266 IoT project.
11:13 Setup Amazon Alexa App to add IoT devices.

Required Components for this IoT Project (without PCB)
1. Arduino UNO
2. ESP8266 NodeMCU
3. 1838 IR receiver (with metal case)
4. DHT11 Sensor
5. 4-channel 5V SPDT Relay Module
6. Switches or Push Buttons
7. FTDI232 USB to TTL
8. 5V DC supply.

Amazon India Affiliate links:

Amazon United States Affiliate links:

Required Components for the Smart Relay PCB:
1. Atmega328P microcontroller
2. ESP8266 NodeMCU
3. PC817 Optocuplors (4 no)
4. 510-ohm 0.25-watt Resistor (4 no) (R1 -- R4)
5. 1k 0.25-watt Resistors (6 no) (R5 -- R10)
6. 2k 0.25-watt Resistor
7. 4.7k 0.25-watt Resistor
8. 10k 0.25-watt Resistors (2no)
9. 22pF ceramic capacitor
10. 104 ceramic capacitor
11. 220uF 25V Capacitor (2no)
12. 1uF Box capacitor (1no)
13. 16MHz Crystal
14. LED 5-mm (6 no)
15. 1N4007 Diodes (4 no) (D1 -- D4)
16. Push Buttons (8 no)
17. BC547 Transistors (4 no)
18. Relays 5v (SPDT) (4 no)
19. Terminal Connectors
20. Jumper (5no)
21. Switch (1no)
22. Hi-link ac-dc 220v-5v

**Previous Video Links:

**Important Link:

**Download Code for this Arduino Home Automation project

Important points:
1. You can also use Arduino Nano instead of Arduino UNO.
2. Use the IR receiver with a metal case.
4. You can use any IR remote, just get the HEX code as shown and update it in the main Arduino sketch.
5. Install the proper version of the Arduino libraries (as mentioned in the code).
6. Arduino EEPROM will store the previous states after the power cuts.
7. Please watch the complete video, otherwise you may face some issues.
8. You don't need any Alexa devices like Echo Dot. You can just use Alexa App for this IoT project.
**Please take proper safety precautions while working with high voltages.

During the internet of things tutorial video, I explained all the steps to make this Arduino NodeMCU smart home system with Arduino Cloud to control the home appliances with and without internet. If NodeMCU is connected with WiFi then you can control the relays from anywhere in the world with Alexa. And you can also monitor the real-time feedback in the Amazon Alexa IoT applications. So with this smart home project, you can convert any appliance to IoT devices and control them through the internet.

So, now you can just say "Alexa, turn on light". that's it.

#internetofthings #homeautomation #arduinoiotcloud
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[blashyrkhification]

Good morning buddy, I would like to learn about Arduino, can I just get one from Ebay and go from there?

[sanjaykhatri]

BRO I have made this project of home automation but it is working opposite when i press ON BUTTON RELAY GETS OFF AND WHEN I press OFF BUTTON RELAY GETS ON SO can you pls help me by sending me the proper ARDUINO CODE there is some mistake in the code

[benlibya]

great project friend, however I wanna ask what type of data warehouse manages the data in this project ? is it simple log files or is it within the cloud servers of amazon through the alexa app ?

[lianal]

Sir, Can do ? Ethernet shield +Arduino Mega control 16chanel realy + 16 Maual switches.

[Manishdasss]

Temparature is showing as 0.3 or smtime 0.33 degree in arduino cloud platofrm and even in alexa app also whats the reason

[ExpoTV]

bro code and files are not available on which link you shared shared .

[ruffastefaniec.andales]

I have problem in uploading sketch in NodeMCU ... Already done ang message hard resetting via RTS Pin and nothing happens

[devashishsingh]

What is the power the bulb you are using?

[AyieMobileTech]

hello can someone help me how to change the code to esp 32 im doing this for my project but im not good in coding

[kingstone]

Make a project with blynk 2.0 and also add a fan speed controller

[nandhinijagadeesan]

Can i connect Arduino mega with NodeMCU esp8266 and then connect to thingspeak to visualize sensor data?

[RahulKumar-meny]

Will 8266 work on 5v power supply? It needs 3.3 v

[sharwarimarathe]

how did you download the esp8266 board and the library cause you just linked the github links?

[edson.moretto]

Prezado, consegue vender somente a placa? Grato.

[pqrst]

Can i use esp32 cam model instead of esp32 dev kit ?

[yasiromenacho]

Podrías usar acces point para hacer prácticas

[pateljyotin]

Can we make this project using node mcu?

[Anger_Anger_Anger]

Alexa or Arduino Cloud Switch not turning off device??

[musaddiqueahmed]

Esp32 with eeprom memory support or not

[ThePreppar]

Why arduino? ESP should be enough? No?