M5Stack MQ-5 Gas Detection Unit Featuring STM32G030 MCU

Description

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Description

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 mode, the heating cycle can be flexibly configured to optimize device power consumption. This product is suitable for various safety and monitoring applications such as smart homes, air quality detection, and industrial safety.

Features

• Built-in STM32 core controller
• I2C communication interface
• Supports detection of various combustible gases (such as LPG, methane, etc.)
• Supports two modes: continuous heating and intermittent heating with customizable periods
• Integrated thermistor for device temperature monitoring
• Readable internal reference voltage and sensor voltage
• Standard MQ sensor interface, compatible with multiple sensors (such as MQ-2, MQ-3, MQ-7, MQ-135, etc.)
• Development Platform:
  • Arduino
  • UiFlow2

Includes

• 1 x Unit MQ
• 1 x HY2.0-4P Grove Cable (20cm)

Applications

Specifications

Specification	Parameter
MCU	STM32G030F6P6@32-bit ARM Cortex-M0+ processor
Sensor	MQ-5 combustible gas sensor
Communication Interface	I2C @0x11, address configurable
Operating Current	Off mode: DC 5.02V@6.88mA Continuous heating mode: DC 5.05V@188.89mA
Detected Gases	LPG, methane
Detection Range	300 ~ 10000ppm (methane, propane)
Recommended Preheat Time in Continuous Heating Mode	20s
Product Size	64.0 x 24.0 x 25.0mm
Product Weight	19.3g
Package Size	138.0 x 93.0 x 25.0mm
Gross Weight	24.7g

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