Ai-Thinker VC-01 Offline Speech Recognition Module

The Ai-Thinker VC-01 Speech Recognition Module is a powerful yet low-cost offline voice control solution designed for everyday smart products. Built using the US516P6 voice chip by Unisound, this module delivers fast and accurate offline speech recognition without needing any internet connection.

With support for up to 150 local voice commands, the VC-01 is ideal for smart home devices, small appliances, toys, lighting systems, voice-controlled panels and more. The onboard 32-bit RISC core running at 240MHz is specially optimized for speech processing, with DSP instructions, floating-point support and an FFT accelerator built right in — giving you fast performance in a compact module.

It also includes a lightweight RTOS, rich interfaces and easy-to-use customization tools, making development simple for beginners and professionals alike.

If you are building a smart, hands-free voice-controlled device, the VC-01 offers a reliable and affordable platform to bring your idea to life.

Features

• ⚙️ 32-bit RISC CPU @ 240MHz

• 🎧 Fully Offline Speech Recognition — supports up to 150 commands

• 🧠 DSP + FPU support for advanced signal processing

• 🚀 Built-in FFT accelerator for speech processing

• 🔌 Supports RTOS lightweight system & multiple interfaces

• 🛡️ Built-in power-on reset, low-voltage detection & watchdog

• 🏡 Ideal for smart home & appliance automation

• 🛠️ User-friendly customization tools available

Perfect for:
Smart switches • IoT devices • Home automation • Toys • Lighting • Panels • DIY electronics

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