Chain MIC

SKU:U226

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

Learn

Use Chain Bridge connectors to connect the Chain DualKey controller to each Chain series device. Pay attention to the orientation when connecting: the triangular arrows should point outward from the Chain DualKey controller, as shown below:

Schematics

• Chain MIC Schematics PDF

1/1

PinMap

RGB LED

MIC

UART

Model Size

• Chain MIC Model Size PDF

Softwares

Arduino

• Chain MIC Arduino Quick Start
• Chain MIC Arduino Driver Library

UiFlow2

• Chain MIC UiFlow2 Documentation

Internal Firmware

• Chain MIC Internal Firmware

Protocol

Video