In this IoT project, I have explained how to make IoT based ESP32 projects using Google Assistant, Amazon Alexa and Sinric to control relays with voice commands and manual switches. I have used all the free tools for this IoT-based home automation system. To try out the FREE trial version of Altium, click here - https://www.altium.com/yt/techstudycell Get the best quality components from Octopart: https://octopart.com/ Altium 365 - https://www.altium.com/altium-365 I have covered the following topics in this ESP32 IoT project tutorial: 00:34 Quick demo on IoT based ESP32 project 02:46 Required components of ESP32 IoT project. 02:56 Circuit for the ESP32 control relay. 03:24 Circuit for the NodeMCU ESP8266 control relay. 03:58 Configure the Sinric Pro for ESP32. 04:36 Generate source code using Zero Code features of Sinric. 05:57 Upload the Auto generated code to ESP32. 07:11 Connect Sinric Pro with the Google Home app. 07:39 Connect Sinric Pro with the Amazon Alexa app. Required Components for the ESP32 internet of things project. 1. ESP32 Devkit V1. 2. 4-channel 5V SPDT Relay Module. 3. Switches Amazon India Affiliate links: ESP32: https://amzn.to/331pohb 4-channel 5V Relay Module: https://amzn.to/2BQ5Y3o Amazon United States Affiliate links: ESP32: https://amzn.to/3mBjCch 4-channel 5V Relay Module: https://amzn.to/3r2HuJ4 Help my projects on Patreon: https://www.patreon.com/join/techstudycell Feel free to donate any amount: https://paypal.me/sdaspay Important Link: Sinric Pro Sign Up: https://sinric.pro/ Important points: 1. You don't need any Echo Devices for this project. 2. In FREE plan you can add maximum 3 devices in Sinric. 3. For LEDs or Active-High relay, no modifications required in the auto-generated code. 4. For NodeMCU, the Boot will fail if the D3 (GPIO-0) (switch-2) is connected with the ground during booting. 5. If you use Switch (latched) with NodeMCU, make sure the switch-2 is OFF during the ESP8266 Boot. **Please take proper safety precautions while working with high voltages. For this project, you don't need any custom design PCB. During the internet of things tutorial video, I have explained all the steps to make this ESP32 home automation system with Sinric Pro to control the home appliances with Wi-Fi. Also explained the circuit diagram and how to configure Sinric Pro for ESP8266 and ESP32. If the ESP32 is connected with WiFi then you can control the relay from anywhere in the world from Google Home and Amazon Alexa app, otherwise you can use manual switch to control the appliances. #iotprojects #esp32 #homeautomation ------------------------------------------------------- Thanks For Watching... ✅ SUBSCRIBE ✅LIKE ✅SHARE ✅ COMMENTS Find out more such projects: https://iotcircuithub.com/ Facebook: https://www.facebook.com/techstudycell/ Instagram: https://www.instagram.com/techstudycell/ Telegram: https://t.me/techstudycell/ ------------------------------------------------------- ------------------------------------------------------- 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 ------------------------------------------------------ Other useful IoT projects: Latest ESP32 projects playlist:    • ESP32 Projects   Latest NodeMCU projects playlist:    • NodeMCU Projects   Arduino Home Automation Projects playlist:    • Arduino Projects