An intelligent IoT device built using the Maixduino Kit for AI + IoT, integrating voice recognition and motion detection to interact with Home Assistant via MQTT. The assistant recognizes specific voice commands, detects motion, and provides visual feedback through four white LEDs and two vertical RGB LED light bars. It updates the state of various entities in Home Assistant, enabling automation and enhancing user interaction with the smart home environment.

• 🗣️ Advanced Voice Recognition: Custom-trained models with project-specific commands
• 📡 Motion Detection: PIR sensor technology for automated activation
• 💡 Dynamic Visual Feedback: 4 status LEDs + RGB light bars for clear system status
• 🏠 Home Assistant Integration: Comprehensive MQTT communication
• 🌙 Smart Night Navigation: Automatic lighting with motion detection
• ⚡ Real-time State Management: Instant updates and automation triggers
• 🛠️ Easy Installation: Non-destructive mounting and simple reset mechanism

• Installation
• Hardware Setup
• Software Configuration
• Voice Model Generation
• Usage Guide
• Troubleshooting
• Contributing
• License

1. Power Connections

   12V DC → Maixduino barrel jack
   GND → Common ground bus
   

2. Sensor Wiring

   PIR VCC → 3.3V
   PIR GND → GND
   PIR OUT → D8
   

3. Status LEDs

   System LED  → D5 + 220Ω → GND
   Speech LED  → D4 + 220Ω → GND
   Network LED → D3 + 220Ω → GND
   Motion LED  → D2 + 220Ω → GND
   

4. Light Bars

   • Mount vertically using Command Strips
   • Connect to ESP8266 running WLED
   • Power via 12V supply

5. Reset Access

   • Connect wire 1 to Reset pin
   • Connect wire 2 to GND pin
   • Route both wires through case opening
   • Insulate exposed ends
   • Label wires clearly

• Maixduino Kit
• USB Cable
• CoolTerm Software
• Python 3.x Environment

1. Physical Setup

   • Install device in final location
   • Ensure case is fully assembled
   • Position at intended height
   • Verify proper ventilation

2. Recording Environment

   • Minimize background noise
   • Maintain consistent ~50cm distance
   • Use normal speaking voice
   • Test acoustics of space

1. Initial Setup

   Port: Select Maixduino COM port
   Baud Rate: 115200
   Data Bits: 8
   Stop Bits: 1
   Parity: None
   

2. Buffer Settings

   • Set buffer size to 75000
   • Enable "Capture to Text File"
   • Clear buffer between recordings

1. Preparation

   • Locate labeled reset and GND wires
   • Ensure clean wire ends
   • Have recording script ready

2. Recording Process

   • Touch reset and GND wires together briefly
   • Wait for LED confirmation of reboot
   • Begin recording when prompted
   • Maintain consistent voice level
   • Complete all 6 samples
   • Save file with descriptive name

3. Safety Notes

   • Keep wire ends separated when not in use
   • Consider adding small connectors
   • Avoid touching other components
   • Keep wires away from interference sources

// System State Topics
const char* motion_state_topic = "home-assistant/voice-control/motion/state";
const char* alfred_state_topic = "home-assistant/voice-control/alfred/state";
const char* system_state_topic = "home-assistant/voice-control/system/state";
const char* cooking_state_topic = "home-assistant/voice-control/cooking/state";
const char* goodnight_state_topic = "home-assistant/voice-control/goodnight/state";
const char* goodmorning_state_topic = "home-assistant/voice-control/goodmorning/state";
const char* light_state_topic = "home-assistant/voice-control/light/state";

# MQTT Configuration
mqtt:
  binary_sensor:
    - name: "Voice Control Motion"
      state_topic: "home-assistant/voice-control/motion/state"
      device_class: "motion"
      unique_id: "voice-control-motion"

  switch:
    - name: "Alfred Mode"
      state_topic: "home-assistant/voice-control/alfred/state"
      unique_id: "voice-control-alfred"
      icon: "mdi:butler"
    
    - name: "Voice Control System"
      state_topic: "home-assistant/voice-control/system/state"
      unique_id: "voice-control-system"
      icon: "mdi:voice"
    
    - name: "Cooking Mode"
      state_topic: "home-assistant/voice-control/cooking/state"
      unique_id: "voice-control-cooking"
      icon: "mdi:stove"
    
    - name: "Goodnight Mode"
      state_topic: "home-assistant/voice-control/goodnight/state"
      unique_id: "voice-control-goodnight"
      icon: "mdi:weather-night"
    
    - name: "Good Morning Mode"
      state_topic: "home-assistant/voice-control/goodmorning/state"
      unique_id: "voice-control-goodmorning"
      icon: "mdi:weather-sunny"
    
    - name: "Voice Control Light"
      state_topic: "home-assistant/voice-control/light/state"
      unique_id: "voice-control-light"
      icon: "mdi:lightbulb"

1. Power-up sequence initiates automatically
2. System LED indicates ready state
3. Motion detection activates voice recognition
4. Voice commands trigger corresponding actions
5. Light bars provide visual confirmation
6. Status LEDs show current system state

• Motion triggers soft lighting
• Auto-off after 4 seconds
• Adjustable sensitivity via Home Assistant
• Smooth fade transitions

This project is licensed under the MIT License - see LICENSE file.

• Circuit Digest and DigiKey for sponsoring the Maixduino board as part of the IoT & Edge AI Project Challenge (DESIGN CONTEST IoT & Edge AI Project Challenge with DIGIKEY)
• Maixduino team for the excellent AI + IoT platform
• Home Assistant community for the automation framework
• WLED project for the LED control firmware