| EcoWifi | A library to manage WiFi connection and SmartConfig-like web portal setup for ESP8266 and ESP32. |
| ESP32Feature28 | Extract 28 audio features from I2S microphones on ESP32 |
| VN_LCD | Display Vietnamese UTF-8 text with accents on HD44780 I2C LCD 16x2 modules. |
| VN_VOICE | Play generated voice clips and Vietnamese number speech on Arduino, ESP8266, and ESP32. |