High-Sensitivity Semiconductor Gas Sensor: Equipped with an MQ-series semiconductor gas sensor, this unit provides reliable detection of combustible gases, making it ideal for air quality monitoring, safety warnings, and environmental sensing projects. I2C Interface for Easy Integration: Designed with a standard I2C communication interface, the gas sensor unit can be quickly connected to M5Stack cores, Arduino, ESP32, and other development boards, simplifying wiring and reducing development time. Combustible Gas & Air Quality Detection: Supports detection of a variety of combustible gases (such as methane, propane, and LPG), enabling real-time air quality assessment and early-warning functions suitable for smart home, safety monitoring, and industrial DIY applications. DIY Project Development Kit: Perfect for makers, students, and engineers, this unit allows you to easily build custom gas detection systems, IoT monitoring terminals, and environmental data loggers. It is suitable for learning sensor principles and rapid prototyping. Compact Module Design: The compact, lightweight module is easy to embed into existing M5Stack ecosystems and other electronic enclosures. Standard mounting holes and a plug-and-play design help ensure tidy, stable installation. Unit MQ is a combustible gas detection unit based on the semiconductor gas sensor (MQ-5), integrated with an MCU (STM32G030F6P6). It is mainly used for detecting combustible gases (such as propane, methane, etc.) in the environment. This unit communicates with various host devices via the I2C interface and can obtain internal reference voltage, sensor voltage, 12-bit and 8-bit ADC raw values, firmware version, thermistor temperature, and other information. It supports two heating modes to bring the sensor to the optimal operating temperature: continuous heating mode and intermittent heating mode. In continuous heating mode, the sensor heats up faster and responds with data more quickly. In intermittent heating mod