ESP32 Alexa Home Automation using Amazon Echo + Bluetooth + IR Remote with Fan Dimmer circuit

In this IoT internet of things project, I have shown how to make the ESP32 Alexa home automation system using Amazon Echo, Bluetooth, IR Remote, and manual switch with the EspAlexa library. You can also control fan speed with voice commands and monitor the real-time feedback in the Amazon Alexa app.

PCBA from $0 (Free Setup, Free Stencil) https://jlcpcb.com/RHS
JLCPCB 3D Printing - https://jlcpcb.com/3d-printing

Download the PCB Gerber File of the ESP32 IoT Project:
https://iotcircuithub.com/wp-content/uploads/2022/10/Gerber_PCB_ESP32-4Relay-1Fan-V3.1.zip

For this ESP32 project, I have not used any IoT platform, and the ESP32 can save the last GPIO state in NVS flash memory (EEPROM). You can control the relay with Bluetooth, IR remote, and switches if the ESP32 is not connected to WiFi.

During this IoT tutorial video, I have covered the following topics:
00:44 Quick demo on this ESP32 Alexa Project.
02:36 Required Components for Alexa home automation system.
02:46 Circuit of ESP32 IoT internet of things project.
04:35 PCB for the ESP32 control relay with fan dimmer.
05:17 Source Code for ESP32 IoT project with ESPAlexa.
06:35 Add devices in the Amazon Alexa app using ESPAlexa.
07:37 Connect ESP32 with Bluetooth app.
09:06 Install the IoT-based ESP32 home automation system.

Required Components (without PCB) for the ESP32 project.
1. ESP32 DEV KIT V1
2. 8-channel 5V SPDT Relay Module
3. TSOP1838 IR receiver (with metallic casing)
4. HC-05 Bluetooth module.
5. Switches
6. 4-step Fan regulator
OR
(2.2uf & 3.3uf 250V Capacitor, 2.2-ohm 1/2W Resistors, 220k 1/4W Resistors, and 4-step selector switch)
7. Amazon Echo Dot

For the PCB, I have shared the complete component list below.
https://iotcircuithub.com/wp-content/uploads/2022/10/PCB-Components-2.jpg

Amazon India Affiliate links:
ESP32: https://amzn.to/331pohb
8-channel 5V Relay Module: https://amzn.to/3mTWyVZ
Amazon Echo Dot (4th Gen): https://amzn.to/33APQx1

Amazon United States Affiliate links:
ESP32: https://amzn.to/3mBjCch
8-channel 5V Relay Module: https://amzn.to/3p50UeH

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Feel free to donate any amount: https://paypal.me/sdaspay

Want to BUY this complete project, then please send an email to [email protected] with your address.

Download the Code for the ESP32 IoT project using ESPAlexa:
https://iotcircuithub.com/wp-content/uploads/2022/12/Code_ESP32_ESPAlexa_BT_IR_1Fan4Relay.zip

Download the Bluetooth App for the ESP32 Project
https://iotcircuithub.com/wp-content/uploads/2022/11/Bluetooth_Switch_V6.zip

Previous Videos:
Get the HEX codes from IR remote: https://youtu.be/5-ZyC3-BzLE
Steps to program ESP32 with Arduino IDE: https://youtu.be/f6ovK57qPRg

Important points:
1. In the 4-step regulator step-2 & 3 must be internally connected.
2. IR receiver sensor must have a metallic casing. Otherwise, you may face issues while trying to get the Hex code.
3. ESP32 can save the last GPIO state after power failure.
4. You can control fan speed relays with Bluetooth, switches & IR remote if WiFi is not available.
5. Install the correct version of the ESP32 board and libraries as mentioned in the code.
6. You must need an Amazon Echo device for this ESP32 Alexa project.
7. The Amazon Echo device, ESP32 must be connected to the same WiFi.
8. Please watch the complete video, otherwise you may face some issues.
**Please take proper safety precautions while working with high voltages.

During the ESP32 project, I explained all the steps to make the Amazon home automation system. For Bluetooth control, you can use any BLE or Bluetooth module.

With this ESP32 home automation project, you can control the fan speed and relays without WiFi from the Bluetooth, IR remote, and manual switches.
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 #alexa

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

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

Arduino Home Automation Projects playlist:
https://youtube.com/playlist?list=PLlBmS9EKFydcxOoCht4ocLEV5zUdoCwsd