Voice Recognition Module V3 with Microphone for Arduino
Voice Recognition Module V3 with Microphone - Arduino Compatible
The Voice Recognition Module V3 is a compact, self-contained speech recognition board with an integrated microphone, designed for Arduino and other microcontrollers. It can be trained to recognize up to 80 voice commands with high accuracy, enabling hands-free control in your projects. Its UART interface and simple command set make it easy to integrate into home automation, robotics, and assistive technology.
Key Specifications
| Specification | Value |
|---|---|
| Working Voltage | 4.5V - 5.5V DC |
| Current Consumption | < 40mA (active) |
| Interface | UART (TTL serial, 9600bps default) |
| Recognition Accuracy | >99% under ideal conditions |
| Voice Commands | Up to 80 trainable commands |
| On-board Microphone | Yes, omnidirectional |
What You Can Build With This
- Voice-controlled home automation system (lights, fans, appliances)
- Voice-activated robot or rover
- Voice password door lock for security
- Assistive device for differently-abled individuals
Compatibility
This module works with any 5V microcontroller that has a UART, including Arduino Uno, Mega, Nano, and Leonardo. For 3.3V boards like ESP8266 or Raspberry Pi, use a logic level shifter. It's commonly paired with relay modules, motor drivers, or displays for interactive projects.
Wiring Notes
Connect VCC to 5V, GND to GND, RX to Arduino pin 3 (software serial), and TX to pin 2. If communication is unreliable, add a 10KΩ pull-up resistor on the RX line. The module draws under 40mA, so standard USB power is sufficient.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Raspberry Pi?
Yes, but you'll need a logic level shifter to convert the Raspi's 3.3V UART to 5V. Connect the module's RX/TX through a bidirectional level converter.
How do I train custom voice commands?
You can train commands using a USB-to-serial adapter and the manufacturer's PC software, or directly from Arduino code using the provided library and serial commands.
Does it work in noisy environments?
The module includes noise reduction, but for best accuracy, use it in a quiet space within 1 meter of the speaker. Avoid background music or loud chatter.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items