Module ASR
SKU:M147
Description
Module ASR is an AI intelligent offline voice module designed based on the CI1302 chip. Equipped with a microphone for clear audio acquisition and a built-in speaker for high-quality audio feedback. It supports mid-session voice interruption, allowing for flexible interruption and quick response to new commands during recognition. Integrated AEC (Echo Cancellation) effectively removes echoes and noise interference, improving recognition accuracy. The product comes preloaded with 53 English wake-up and feedback command words and supports activating the device through UART commands or voice keyword triggers. Users can customize recognition words in Chinese, English, Japanese, and Korean by regenerating firmware, supporting up to 300 command words. The device communicates via a UART interface and allows switching between different UART pins through a DIP switch. It is ideal for AI assistants, smart homes, security monitoring, automotive systems, robotics & smart hardware, and healthcare applications — a perfect choice for intelligent voice interaction.
Features
- Intelligent offline voice module
- AEC noise reduction processing
- Built-in 53 English commands; support up to 300 commands
- UART communication interface
- Support for custom wake-up words
- Firmware burning via reserved USB Type-C interface
- Equipped with microphone and built-in speaker
- Development Platform
- UiFlow2
- Arduino
Includes
- 1 x Module ASR
Applications
- AI Assistant
- Smart Home
- Security Monitoring
- Vehicle System
- Robotics & Smart Hardware
- Healthcare
Specifications
| Specification | Parameter |
|---|---|
| AI Voice Chip | CI1302 |
| Command Words | Up to 300 commands supported; 53 preset commands from factory |
| Wake-up Method | Voice keyword or UART serial communication to activate device |
| Microphone | Analog microphone, model GMI4527P-2C-32db |
| Speaker | Chamber speaker 8Ω@0.8W (used for wake-up feedback output) |
| Communication | UART serial communication, default baud rate: 115200@8N1 |
| Noise Reduction | AEC echo cancellation noise reduction |
| Wake-up Range | Ambient noise 40dB: up to 6.4m Ambient noise 54dB: up to 1.8m |
| Power Consumption | Standby: DC 5V@52.14mA Working: Low volume: DC 5V@43.38mA Medium volume: DC 5V@85.26mA High volume: DC 5V@161.34mA |
| Product Size | 54.0 x 54.0 x 13.1mm |
| Product Weight | 15.2g |
| Package Size | 132.0 x 95.0 x 13.1mm |
| Gross Weight | 28.9g |
Learn
Schematics
PinMap
M5-Bus
SW on the M5-Bus below can be toggled via DIP switch for compatibility with different main controllers.| PIN | LEFT | RIGHT | PIN |
|---|---|---|---|
| GND | 1 | 2 | |
| GND | 3 | 4 | |
| GND | 5 | 6 | |
| 7 | 8 | ||
| 9 | 10 | ||
| 11 | 12 | 3V3 | |
| UART_RX (SW) | 13 | 14 | UART_TX (SW) |
| UART_RX (SW) | 15 | 16 | UART_TX (SW) |
| 17 | 18 | ||
| 19 | 20 | ||
| UART_TX (SW) | 21 | 22 | UART_RX (SW) |
| UART_TX (SW) | 23 | 24 | |
| HPWR | 25 | 26 | UART_RX (SW) |
| HPWR | 27 | 28 | 5V |
| HPWR | 29 | 30 |
Model Size
Datasheets
Softwares
Quick Start
Arduino
Protocol
Internal Firmware
Other
Video
- Module ASR Product Introduction and Function Demonstration