Main Content

In this IoT project, I have shown how to make IoT based Smart Home Automation Using Amazon Alexa & ESP32 to control 8 home appliances from the manual switch & Amazon Alexa App. If the internet is not available, then you can control the home appliances from manual switches. During the article, I have shown all the steps to make this smart home system.
This ESP32 control smart relay has the following features:
1. Control home appliances with voice commands using Alexa
2. Control home appliances with manual switches.
3. Monitor real-time feedback in the Alexa App.
4. Control home appliances manually without internet.
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”

Link to article