Voice Recognition Module – 80 Commands UART Interface

The Voice Recognition Module is a compact speech recognition board designed for seamless integration with Arduino and other microcontrollers. It supports up to 80 user-trained voice commands, with a maximum of 7 active commands loaded at one time through its internal recognizer. Operating at 4.5–5.5V with UART and GPIO control, the module enables reliable speaker-dependent voice control. With onboard flash storage and 5V TTL interface, it is suitable for robotics, automation systems, and interactive embedded applications.

• Support up to 80 trained voice commands
  
• Maximum 7 active commands simultaneously
  
• Speaker-dependent voice recognition
  
• 5V TTL UART communication interface
  
• GPIO output control pins
  
• Onboard flash storage for voice records
  
• 3.5mm mono microphone connector
  
• Microphone pin interface support
  
• Recognition accuracy up to 99% (ideal conditions)
  
• User-defined command signatures
  
• Group management for command organization
  
• Compact 31 × 50 mm PCB design

• Operating Voltage: 4.5–5.5V DC
  
• Operating Current: < 40mA
  
• Recognition Type: Speaker-Dependent
  
• Maximum Voice Commands: 80
  
• Active Commands at One Time: 7
  
• Recognition Accuracy: Up to 99% (ideal environment)
  
• Digital Interface: 5V TTL UART and GPIO
  
• Analog Interface: 3.5mm Mono Microphone Jack + Mic Pins
  
• Voice Record Length: Up to 1500ms per command
  
• Flash Storage: Built-in for 80 records
  
• PCB Dimensions: 31mm × 50mm
  
• Command Index Range: 0–6 (Recognizer Slots)

• Technical Datasheet
• Voice Recognition module V3 3D Model
  

• DEMONSTRATION: Elechouse Voice Recognition Module v3.1 w/Arduino Uno R3
  
• Elechouse Voice Recognition Module V3.1 and Arduino - Setup and Tutorial
  
• Voice Recognition Module - 254 Voice Commands + UART