Smart Home using Arduino IoT Cloud ESP32 Alexa control relay with IR remote DHT11 sensor - IoT 2021

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In this IoT projects, I have shown you how to make the smart home using Arduino IoT Cloud ESP32 Alexa control relay with IR remote and DHT11 temperature sensor to control relays with voice commands and manual switches. I have used all the FREE tools for this IoT-based home automation system.

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

Download PCB Gerber file for this ESP32 home automation project
https://drive.google.com/uc?export=download&id=1ul0vrxWT95tU8UadmhOsaCp6fVvo_xi7

During the tutorial video, I have covered the following topics:
00:50 Control appliances with Alexa using Arduino IoT Cloud ESP32
01:27 Control ESP32 without internet.
02:33 Required Components for this ESP32 IoT project.
02:50 Circuit diagram of ESP32 Alexa home automation project.
04:06 How to set up Arduino IoT Cloud for ESP32.
06:39 How to create Arduino IoT Cloud dashboard
07:54 Program ESP32 with Arduino IDE
10:32 Setup Amazon Alexa App to connect Arduino IoT Cloud.
11:41 Control relays with voice using Amazon Alexa App

Required Components for this ESP32 internet of things project
1. ESP32 DEV KIT V1
2. 4-channel 5V SPDT Relay Module
3. DHT11 temperature sensor
4. TSOP 1838 IR receiver IC
5. Push Buttons
6. Any IR remote

Amazon India Affiliate links:
ESP32 DEV KIT V1 : https://amzn.to/331pohb
4-channel 5V Relay Module : https://amzn.to/2BQ5Y3o
Echo Dot Alexa(4th Gen) : https://amzn.to/3srCiPA

Amazon United States Affiliate links:
ESP32 DEV KIT V1 : https://amzn.to/3mBjCch
4-channel 5V Relay Module : https://amzn.to/3r2HuJ4

Required Components for the ESP32 control relay 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

Sign Up Arduino IoT Cloud page link:
https://create.arduino.cc/iot/things

Related Previous Video Links:
Arduino IoT Cloud ESP8266 home automation (Sign Up Arduino cloud)
https://youtu.be/UtReFcOLJx8

Get IR Remote Hex Code for ESP32 control relay
https://youtu.be/5-ZyC3-BzLE


Important points for this ESP32 project:
1. Here I have used the FREE plan of Arduino IoT cloud, so you can control maximum 5 relays or sensors with the FREE plan.
2. You don't need any Alexa devices like Echo Dot. You can just use Amazon Alexa App for this Arduino IoT project.
3. After compiling the code, you have to press and hold the BOOT button of ESP32 until the code starts uploading.
4. You can also use Arduino Web Editor to program the ESP32.
5. You will get real-time feedback if the ESP32 connected to the internet.
6. Please take proper safety precautions while working with high voltage.

Download Code for this Arduino Cloud ESP32 smart house automation project
https://drive.google.com/file/d/1y1b7rC5QgKX_uAzxhTXc7mDlcYCtMv6v/view?usp=sharing

During the Arduino IoT cloud tutorial video, I have explained all the steps to make this ESP32 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 ESP32 connected with WiFi, then you can control the relays from anywhere in the world with the Arduino IoT Cloud Remote app and Alexa. And if there is no internet, still you can control the relays manually with IR remote and switch. 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 #arduino
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Other useful Internet of things projects:

Latest ESP32 projects playlist:
https://www.youtube.com/playlist?list=PLlBmS9EKFydee7YsvVP_5TiPDeH38PwlK

Latest NodeMCU ESP8266 projects playlist:
https://www.youtube.com/playlist?list=PLlBmS9EKFydcv9ffXm72-cU9_EusicIjO

ESP32 Smart Home System with Amazon Alexa app & Manual Switches
https://youtu.be/b5yr-H6jJAc

Smart Home with Google Assistant & Alexa using NodeMCU ESP8266
https://youtu.be/gpB4600keWA
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