Description
Chain MIC is a sound acquisition node in the M5Stack Chain series. It features a built-in GMI4015P-2C microphone, an SGM321YC5/TR operational amplifier, and a programmable RGB LED. It supports 12-bit ADC sampling of sound signals and threshold triggering, making it suitable for applications such as environmental sound detection, voice-controlled interaction, and device status indication. It integrates an STM32G031G8U6 main controller and uses a UART serial daisy-chain communication protocol. Its two HY2.0-4P expansion interfaces allow more Chain series devices to be connected, enabling richer sound sensing and interactive applications.
Features
- M5Stack Chain series
- GMI4015P-2C microphone sound acquisition
- Supports 12-bit ADC sampling of sound signals and threshold triggering
- STM32G031G8U6 main controller
- 1 x RGB LED
- UART serial daisy-chain communication protocol
- 2 x HY2.0-4P expansion interfaces for connecting Chain series devices
Includes
- 1 x Chain MIC
- 1 x Chain Bridge
Applications
- Environmental sound detection
- Sound threshold triggering
- Voice-controlled interactive devices
- Smart home sound sensing
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32G031G8U6 |
| Power Input | DC 5V |
| Communication | UART 115200bps@8N1 |
| Interface | 2 x HY2.0-4P |
| Microphone | GMI4015P-2C |
| Operational Amplifier | SGM321YC5/TR |
| RGB LED | 1 x WS2812C-2020 |
| Sound Signal | 12-bit ADC sampled value, threshold trigger status |
| Operating Power Consumption | 5V@35.54mA (MIC active, white LED always on) |
| Product Size | 24.0 x 24.0 x 16.0mm |
| Product Weight | 5.7g |
| Package Size | 138.0 x 93.0 x 17.0mm |
| Gross Weight | 9.0g |