Arduino IoT Cloud ESP8266 NodeMCU Alexa Home Automation system | Internet of Things projects 2021

In this Internet of Things projects, I have shown you how to make the Arduino IoT Cloud ESP8266 NodeMCU Alexa Home Automation system to control relays with voice commands and manual switches. I have used all the free tools for this IoT-based smart home system.

$2 for 1-4 Layer PCBs, Get SMT Coupons: https://jlcpcb.com/RHS

Download PCB Gerber file for this NodeMCU IoT based home automation project
https://drive.google.com/uc?export=do...

Visit the following website to get electronics components, modules at a very reasonable price
https://utsource.net?source=YouTube

During the tutorial video, I have covered the following topics:
00:33 Control appliances with Alexa using Arduino IoT Cloud ESP8266
01:11 Control ESP8266 NodeMCU without internet.
02:28 Required Components for this NodeMCU IoT project.
02:40 Circuit diagram of NodeMCU Alexa home automation project.
04:01 How to set up Arduino IoT Cloud for ESP8266 NodeMCU.
07:10 How to create Arduino IoT Cloud dashboard
08:07 Program NodeMCU with Arduino IDE
10:08 Setup Amazon Alexa App to add Arduino IoT Cloud.
11:14 Control relays with voice using Amazon Alexa App

Required Components for each room for this NodeMCU home automation
1. NodeMCU
2. 4-channel 5V SPDT Relay Module
3. Push Buttons

Amazon India Affiliate links:
NodeMCU : https://amzn.to/3fJA4EG
4-channel 5V Relay Module : https://amzn.to/2BQ5Y3o
Echo Dot Alexa(4th Gen) : https://amzn.to/3srCiPA

Amazon United States Affiliate links:
NodeMCU : https://amzn.to/2WoR2A2
4-channel 5V Relay Module : https://amzn.to/3r2HuJ4

Required Components for the NodeMCU control Relay Module PCB:
1. Relays 5v (SPDT) (4 no)
2. BC547 Transistors (4 no)
3. PC817 Optocuplors (4 no)
4. 510-ohm 0.25-watt Resistor (4 no) (R1 -- R4)
5. 1k 0.25-watt Resistors (5 no) (R5 -- R9)
6. LED 5-mm (5 no)
7. 1N4007 Diodes (4 no) (D1 -- D4)
8. Push Buttons (4 no)
9. Terminal Connectors
10. 5V DC supply

Click on the following link to visit Arduino IoT Cloud sign up page
https://store.arduino.cc/digital/create

**Here I have used the FREE plan of Arduino IoT cloud, so you can control maximum 5 relays with the FREE plan.
**You don't need any Alexa devices like Echo Dot. You can just use Amazon Alexa App for this IoT project.
**Real-time feedback is not added to the sketch.
**This sketch contains 3 files. keep all the files in the same folder.

Download Code for this Arduino Cloud NodeMCU smart house automation project from the following article.
https://iotcircuithub.com/arduino-iot...

During the Arduino IoT cloud tutorial video, I have explained all the steps to make this NodeMCU ESP8266 smart home system with Arduino IoT Cloud to control the home appliances with and without the internet. I have also shown how to connect Amazon Alexa with Arduino Cloud to control the relays with voice commands. If the NodeMCU connected with WiFi then you can control the relays from anywhere in the world with Alexa. So with this smart house 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" to control the home appliances.

#internetofthings #homeautomation #alexa
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