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Junluan Tsui
Junluan Tsui

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KT6368A BLE Bluetooth Chip Application Case Study in Smart Home Scenarios: Smart Lighting Control System

#smarthome #bluetoothchip #ble #bluetoothapplication

Application Case Study of KT6368A in Smart Home Scenarios

1. Introduction to KT6368A Module

The KT6368A is a high-performance Bluetooth 5.1 dual-mode module supporting both BLE and SPP protocols. It features low power consumption, high sensitivity, and long-range transmission. Key specifications from the user manual include:

  • Frequency range: 2.402GHz–2.480GHz
  • Transmit power: Up to 8dBm
  • Receiver sensitivity: -94dBm
  • UART interface communication
  • Core architecture: 32-bit RISC-V @48MHz
  • On-chip memory: 64KB SRAM
  • Configurable via AT commands


These characteristics make it ideal for various smart home applications.

2. Smart Lighting Control System

Use Case: Control home lighting via smartphone app or voice assistant

Implementation:

  • Integrate KT6368A into smart bulbs or switches
  • Direct Bluetooth connection from a smartphone or via a gateway
  • Receive control commands to adjust brightness, color temperature, etc.


Advantages:

  • Low power consumption for always-on devices
  • Fast response (<100ms latency)
  • Supports group control for multiple lights

Reference: Similar to Philips Hue but with a lower-cost solution using KT6368A

3. Typical Implementation Example-Smart Lighting System Setup

  1. Hardware Connection:

    • Connect KT6368A’s UART to the host MCU
    • Link PWM output to LED driver circuit
    • Configure GPIO for status indication

  2. Software Development:

   // Example: Lighting control logic  
   void handle_ble_command(uint8_t cmd, uint8_t value) {  
       switch(cmd) {  
           case CMD_BRIGHTNESS:  
               set_pwm_duty(value);  // Adjust brightness  
               break;  
           case CMD_COLOR_TEMP:  
               adjust_color_temp(value);  // Modify color temperature  
               break;  
           // Other commands...  
       }  
   }
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  1. AT Command Configuration: 
   AT+NAME SmartBulb_01      // Set device name  
   AT+ROLE=SLAVE             // Slave mode  
   AT+ADVINT=500             // 500ms advertising interval
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  1. Mobile App Development:
    • Use Android/iOS Bluetooth APIs to connect to KT6368A
    • Implement control UI and scene modes

4. Key Benefits

  1. Cost-Effective: 30% lower hardware cost vs. Wi-Fi solutions
  2. Easy Deployment: No complex network setup; user-friendly installation
  3. Low Power: Ideal for battery-operated devices (extended lifespan)
  4. High Compatibility: Works with major platforms (e.g., HomeKit, Tmall Genie)
  5. Developer-Friendly: Full SDK and documentation accelerate time-to-market

5. Market Feedback

Data from an ODM manufacturer:

  • 25% reduction in production cost for KT6368A-based products
  • 99.3% first-time pairing success rate
  • 15m average range in real-world smart home environments
  • 40% fewer customer complaints compared to previous solutions

6. Future Trends

  1. Bluetooth Mesh for larger-scale networks
  2. Rental-friendly smart home solutions (plug-and-play)
  3. UWB integration for indoor positioning
  4. Edge computing to enable local automations without cloud dependency

The KT6368A, with its balanced performance and cost, is becoming a mainstream choice for Bluetooth-enabled smart home devices, providing reliable wireless connectivity.

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