The Voice Recognition Module V3 is a compact, easy-to-use speech recognition board designed for voice-controlled electronics projects. It is a speaker-dependent module, meaning it must be trained to recognize the user’s voice before operation. Once trained, it can accurately recognize custom voice commands to control Arduino and other microcontroller-based systems.

The module can store up to 80 voice commands, each up to 1500 ms long (typically one or two spoken words). Any 7 commands can be loaded into the active recognition library simultaneously, allowing efficient voice control for a wide range of applications such as home automation, robotics, smart devices, and interactive projects.

Key Features

• Supports up to 80 user-trained voice commands
• Up to 7 active voice commands can be recognized simultaneously
• Speaker-dependent recognition for personalized operation
• Compatible with Arduino using the supplied library
• Dual control methods:
  • UART serial interface for full functionality
  • GPIO interface for basic control
• General-purpose output pins can generate signals when a voice command is recognized
• Includes both a 3.5mm microphone jack and microphone pin interface
• Compact size suitable for embedded projects
• High recognition accuracy of up to 99% under ideal operating conditions

Technical Specifications

Specification	Value
Operating Voltage	4.5V – 5.5V DC
Operating Current	< 40mA
Digital Interface	5V TTL UART, GPIO
Analog Input	3.5mm mono microphone connector and microphone pin interface
Voice Commands Storage	80 commands
Simultaneously Active Commands	7
Maximum Command Length	1500 ms (approximately one or two words)
Recognition Accuracy	Up to 99% (ideal conditions)
Dimensions	31 × 50 mm

Package Includes

• 1 × Voice Recognition Module V3
• 1 × Microphone