How to Use ai thinker vc-02: Examples, Pinouts, and Specs

The AI Thinker VC-02 is a versatile voice recognition module that supports offline voice commands. Manufactured by Atharv Banage, this module is designed to facilitate voice control in various applications, including smart home devices, robotics, and other systems requiring voice interaction. The VC-02 is known for its high accuracy and ease of integration, making it a popular choice among developers and hobbyists.

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power supply and the GND pin to the ground.
2. UART Communication: Connect the TX pin of the VC-02 to the RX pin of your microcontroller (e.g., Arduino UNO) and the RX pin of the VC-02 to the TX pin of your microcontroller.
3. Microphone Connection: Connect the MIC+ and MIC- pins to the respective terminals of the microphone.

• Power Supply: Ensure that the power supply voltage is within the specified range (3.3V - 5V) to avoid damaging the module.
• Microphone Placement: Place the microphone in a location where it can clearly capture voice commands without significant background noise.
• Command Training: Train the module with clear and distinct voice commands to improve recognition accuracy.
• Baud Rate: The default baud rate is 9600 bps. Ensure that your microcontroller's UART is configured to the same baud rate.

#include <SoftwareSerial.h>

// Define the pins for SoftwareSerial
SoftwareSerial vc02Serial(10, 11); // RX, TX

void setup() {
  // Start the hardware serial communication
  Serial.begin(9600);
  // Start the software serial communication
  vc02Serial.begin(9600);
  Serial.println("VC-02 Voice Recognition Module Initialized");
}

void loop() {
  // Check if data is available from the VC-02 module
  if (vc02Serial.available()) {
    // Read the incoming data
    String command = vc02Serial.readStringUntil('\n');
    Serial.print("Received Command: ");
    Serial.println(command);

    // Process the command
    if (command == "TURN ON LIGHT") {
      Serial.println("Turning on the light...");
      // Add code to turn on the light
    } else if (command == "TURN OFF LIGHT") {
      Serial.println("Turning off the light...");
      // Add code to turn off the light
    } else {
      Serial.println("Unknown command");
    }
  }
}

1. No Response from Module:

   • Solution: Check the power supply connections and ensure the module is receiving the correct voltage. Verify the UART connections and baud rate settings.

2. Poor Recognition Accuracy:

   • Solution: Ensure the microphone is placed in a quiet environment and the voice commands are clear and distinct. Re-train the module with better quality voice samples if necessary.

3. Module Not Communicating with Microcontroller:

   • Solution: Verify the UART connections (TX to RX and RX to TX) and ensure the baud rate is correctly set to 9600 bps on both the module and the microcontroller.

Q1: Can the VC-02 module recognize multiple languages?

• A1: The VC-02 module primarily supports English for offline voice commands. For other languages, please refer to the manufacturer's documentation for compatibility and training procedures.

Q2: How many voice commands can the VC-02 module store?

• A2: The VC-02 module can store up to 80 offline voice commands.

Q3: What is the maximum recognition distance for the VC-02 module?

• A3: The VC-02 module can recognize voice commands from a distance of up to 2 meters.

Q4: Can I use the VC-02 module with a 3.3V microcontroller?

• A4: Yes, the VC-02 module is compatible with both 3.3V and 5V microcontrollers.

Q5: How do I reset the VC-02 module to factory settings?

• A5: Refer to the manufacturer's documentation for the specific procedure to reset the module to factory settings.

This documentation provides a comprehensive guide to using the AI Thinker VC-02 voice recognition module. Whether you are a beginner or an experienced user, following these instructions and best practices will help you effectively integrate voice control into your projects.