🔊🤖 Build Your Own AI Voice Assistant Using ESP32-S3 (N16R8) 🚀

This guide will walk you through creating an AI voice assistant using the ESP32-S3-DevKitC-1 (WROOM N16R8) with speech input/output and visual feedback via an OLED display. Perfect for STEM classrooms and hobbyists!

Required Hardware

1. Core Components

1. ESP32-S3 DevKitC-1 (WROOM N16R8)
2. INMP441 Digital Microphone
3. MAX98357A Digital Amplifier
4. Speaker (8Ω 23W or 4Ω 23W)
5. 128x32 I2C OLED Display
6. Breadboard (400-hole x2)
7. Jumper Wires / Dupont Wires
8. USB Type-C Cable

2. Optional Modules (I am not using this)

1. ML307R Cat.1 4G Module (for outdoor use without Wi-Fi)
2. 6x6mm Tactile Push Buttons (Optional: Volume control, pause/resume)

video link

Recommended Firmware:

Use: v1.4.6_bread-compact-wifi.bin (Stable version for OLED 128x32 SSD1306)

1. Download from xiaozhi GitHub Releases
2. Flash the .bin file using ESP32 Download Tool or esptool.py
3. Press RESET after upload to start

1. Voice prompt: "WiFi connected mode"
2. OLED Output: Shows AI assistant is listening
3. Connect your phone to AP: Xiaozhi-XXXX
4. Visit in browser: http://192.168.4.1

OLED showing listening prompt)

www.xiaozhi.me

1. White screen on OLED? Check SDA/SCL pin connections and 3.3V power
2. No response? Ensure microphone GND and L/R are connected properly
3. ESP32 not detected? Try a different USB cable or reinstall drivers

Video tutrial . For any question

You now have a fully functioning AI Voice Assistant powered by ESP32-S3 and Xiaozhi AI. Use it in your STEM class, demo it at maker fairs, please Subscibe my channel

if you guys have any problem let me know. thanks