5.Features Usage Guide

This chapter provides a detailed introduction to the functions and usage methods of the LAFVIN AIoT Starter Kit, helping you make full use of the platform.

AI Voice Control Features

The core feature of the LAFVIN AIoT Starter Kit is controlling hardware devices through natural language. You can interact with the system in the following ways:

Voice Wake-up Method

1. Wake word activation:

   • Default wake word is “Hi ESP” or “Sophia”

   • After saying the wake word, the system will respond and wait for your commands

   • You have approximately 5 seconds to give control commands after wake-up

   • Supports continuous conversation and mid-conversation interruption

Device Control Commands

The LAFVIN AIoT Control Kit supports the following types of voice control:

1. Lighting Control: “Turn the light red” / “Enable rainbow mode”

2. Environmental Monitoring: “What’s the current temperature and humidity?”

3. Device Operation: “Turn on the cooling fan” / “Move servo to 90 degrees”

4. Scene Modes: “Enable police car mode” / “Start rainbow chase”

Voice Recognition Quality

1. Pickup range: Approximately 2-3 meters effective recognition distance

2. Noise reduction: Built-in algorithms can filter environmental noise

3. Multi-language support: Chinese, English, and other language recognition

Smart Lighting System

RGB LED Module Functions

RGB LED module  →    ESP32-S3
GND             →    GND
R               →    GPIO4
G               →    GPIO5
B               →    GPIO6

1. Color Adjustment:

   • Supports 16.77 million colors for precise color adjustment

   • Voice command: “Hi ESP, turn the LED blue”

   • Adjustable brightness: 0-100% continuous adjustment

2. Special Effect Modes:

   • Breathing light effect: Configurable color and breathing cycle

   • Rainbow mode: Automatic color cycle transitions

   • Voice command: “Hi ESP, enable breathing light mode”

WS2812 Smart LED Strip

WS2812strip   →    ESP32-S3
5V            →    5V
GND           →    GND
DIN           →    GPIO7

1. Preset Lighting Modes:

   • Police car mode: Red and blue alternating flashing effect

   • Rainbow chase: Rainbow colors flowing along the strip

   • Breathing light: Overall brightness gradient effect

2. Custom Control:

   • Overall color setting: All 8 LEDs change color simultaneously

   • Individual LED control: Precise control of each LED

   • Voice commands: “Hi ESP, enable rainbow chase on LED strip”, “Hi ESP, enable police car mode on LED strip”

Environmental Monitoring System

DHT11 Temperature & Humidity Sensor

DHT11 Sensor  →    ESP32-S3
DATA          →    GPIO11
VCC           →    5V
GND           →    GND

1. Real-time Monitoring Functions:

   • Temperature monitoring: 0-50°C, accuracy ±2°C

   • Humidity monitoring: 20-90%RH, accuracy ±5%RH

   • Voice query: “Hi ESP, what’s the current temperature and humidity?”

Rain Sensor

Rain Sensor   →    ESP32-S3
VCC           →    3.3V
GND           →    GND
DO            →    GPIO15

1. Rainfall Detection:

   • Real-time raindrop sensing

   • Digital switch signal output

   • Voice query: “Hi ESP, is it raining outside?”

Soil Moisture Sensor

Soil Sensor   →    ESP32-S3
VCC           →    3.3V
GND           →    GND
DO            →    GPIO17

1. Soil Status Monitoring:

   • Real-time soil moisture content detection

   • Analog signal output with high precision

   • Voice query: “Hi ESP, how is the soil moisture of the plants?”

Smart Control System

SG90 Servo Motor Control

SG90 Servo    →    ESP32-S3
Red (VCC)     →    5V
Brown (GND)   →    GND
Orange (Signal) →  GPIO16

1. Precise Angle Control:

   • Control range: 0-180 degrees

   • Control precision: 1 degree

   • Voice command: “Hi ESP, move servo to 45 degrees”

2. Motion Modes:

   • Scanning mode: Automatic left-right swinging

   • Voice command: “Hi ESP, start servo scanning”

Smart Fan Control

Fan Module    →    ESP32-S3
VCC           →    5V
GND           →    GND
IN            →    GPIO10

1. On/Off Control:

   • Voice control: “Hi ESP, turn on the fan” / “Hi ESP, turn off the fan”

   • Status query: “Hi ESP, is the fan running?”

2-Channel Relay Control

Relay Module  →    ESP32-S3
VCC           →    5V
GND           →    GND
IN1           →    GPIO8
IN2           →    GPIO9

1. Independent Control:

   • Two relays can be controlled independently

   • Voice command: “Hi ESP, turn on relay channel 1”

   • Maximum control capacity: 10A@250VAC

2. External Device Control:

   • Control lamps, appliances, and other external devices

   • Timer on/off functionality

   • Safety isolation protection

Application Scenarios

Smart Home (Ready to Use) * Environmental monitoring: “Hi ESP, what’s the temperature?” → Real-time sensor data * Lighting control: “Hi ESP, turn the light warm yellow” → RGB mood lighting * Device control: “Hi ESP, turn on the fan” → Built-in relay/fan control

Smart Agriculture (Monitoring Ready, Automation Requires Development) * Monitoring: “Hi ESP, how’s the soil moisture?” → Sensor data collection * Automation: Connect pumps/valves to relays for irrigation (requires additional hardware & programming)

Creative Display (Ready to Use) * Light shows: “Hi ESP, enable police car mode” → Dynamic LED effects * Interactive demos: “Hi ESP, start servo scanning” → Motion demonstrations

Educational & Development Platform (Ready to Use + Expandable) * Learning: Device control principles, AI voice interaction * Development: MCP protocol extension, custom automation logic

Note

Included: All sensors, LED controls, servo, fan, and 2-channel relay are ready to use with voice commands.

Expandable: Connect external devices (pumps, valves, appliances) to relays for custom automation. Programming knowledge required for advanced features.

Device Status & Control

Voice Queries * “Hi ESP, what’s the status of all sensors?” * “Hi ESP, which devices are running?” * “Hi ESP, is the system working normally?”

Smart Features * Supports voice-driven status checks after the device is connected and bound * Can be extended through firmware and backend customization for advanced automation