Ai-Thinker VC-02-Kit | Best Offline Voice Recognition Board

The Ai-Thinker VC-02-Kit is a development kit for the VC-02 offline voice recognition module. It recognises spoken commands locally on the chip – no internet, Wi-Fi or cloud API is needed – and sends the result to your microcontroller over UART. The kit includes the board with USB-to-serial, microphone and speaker connections, so you can test and flash custom voice commands straight from a PC.

Specifications

Key Features

• Works fully offline – fast response and privacy
• Custom wake word and command words can be generated and flashed
• Voice reply through the speaker
• Simple UART output – easy to read with Arduino or ESP32
• USB on board for power and firmware flashing

Applications

• Voice-controlled lights, fans and home appliances
• Smart switch boards and touchless panels
• Voice-controlled robots and toys
• B.Tech and diploma voice recognition projects

FAQ

Does the VC-02 need internet?
No. All recognition happens on the module itself.

How do I connect it to Arduino?
Connect VC-02 TX/RX to Arduino RX/TX (with common GND) and read the command code sent over serial.

Can I buy the Ai-Thinker VC-02-Kit in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.