Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Recognition Mode | Offline Voice Recognition (No Internet Required) |
| Supported Languages | English, Mandarin Chinese, Spanish, French |
| Max Command Count | Up to 80 customizable voice commands |
| Interface Type | UART, I2C, GPIO |
| Operating Voltage | 3.3V - 5V DC |
| Microphone Input | Dual Microphone Array Support |
| Response Time | < 200ms average latency |
| Development Environment | Web-based Configuration Tool & SDK |
| Dimensions | 45mm x 30mm x 8mm |
| Package Contents | VC-02 Module, Microphone Board, USB Cable, Jumper Wires |
Anonymous
Mar 29, 2026
Rating: 4/5
Solid value for money
Compared to other AI voice modules on the market, this offers the best balance of price and performance. The UART interface makes it easy to connect to ESP32 or Arduino boards.
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for offline IoT projects
I needed a voice module that didn't rely on cloud APIs for my home automation project. The VC-02 works flawlessly out of the box. The web configuration tool is intuitive, and recognizing custom commands took less than 10 minutes to set up.
Anonymous
Mar 19, 2026
Rating: 5/5
Excellent for student projects
We bought ten kits for our university embedded systems course. Students love that they don't need Wi-Fi to test their code. The dual microphone support helps significantly in a noisy classroom environment.
Anonymous
Mar 18, 2026
Rating: 4/5
Great hardware, documentation could be better
The recognition accuracy is impressive even with background noise. However, the English documentation for the advanced GPIO triggering features is a bit sparse. Once I figured it out via the community forum, it worked great.
Anonymous
Mar 05, 2026
Rating: 5/5
Fast response time
Used this to control a small robotic arm. The latency is incredibly low, making the interaction feel natural. Being offline means no privacy concerns either, which is a huge plus for my clients.
Anonymous
Mar 03, 2026
Rating: 3/5
Good but limited vocabulary size
It works well for simple commands like 'Light On' or 'Motor Stop'. If you try to load too many complex phrases, the recognition rate drops slightly. Stick to the recommended command count for best results.
Q: What is the effective recognition distance?
A: In a quiet environment, the effective range is approximately 3 to 5 meters. With the optional dual-microphone array board included in the kit, noise cancellation improves performance in louder settings.
Q: Is an internet connection required for initial setup?
A: An internet connection is only needed once to access the online configuration portal to generate the firmware model. After downloading the model to the module, it operates completely offline.
Q: Does this module work with Raspberry Pi?
A: Absolutely. You can connect the VC-02 to a Raspberry Pi via the UART TX/RX pins. We provide Python example scripts in our GitHub repository to get you started quickly.
Q: Can I train the module to recognize my own specific wake words?
A: Yes, the web-based configuration tool allows you to customize wake words and up to 80 specific command phrases without needing to write complex code.
Q: Can I output audio responses through this module?
A: The VC-02 is primarily a recognition module. It outputs serial data or GPIO signals upon recognizing a command. To play audio responses, you would need to connect an external speaker module triggered by the VC-02's output.
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