Gravity: Analog Propane Gas Sensor (MQ6)

Arduino Propane Gas Sensor (MQ6) is a gas detection module designed for identifying combustible gases such as propane, iso‑butane, and liquefied petroleum gas (LPG). Built around the MQ6 sensing probe, the module provides analog signal output proportional to gas concentration, enabling reliable monitoring in safety and automation systems. High sensitivity to LPG-related gases combined with low response to alcohol vapor, cooking fumes, and cigarette smoke improves detection accuracy in real environments. A Gravity connector simplifies integration with development platforms and prototyping hardware, making the sensing board suitable for rapid deployment in embedded monitoring and control projects.

MQ6 Gas Sensing Element for LPG Detection

The gas sensing board uses an MQ6 semiconductor probe optimized for detecting propane, iso‑butane, and LPG concentrations. This sensing element offers strong selectivity toward common fuel gases while maintaining lower sensitivity to alcohol vapor and smoke interference. Such characteristics make the module well suited for leakage detection systems in kitchens, industrial storage areas, and fuel-handling facilities. Fast response characteristics allow the analog signal to quickly reflect changes in gas concentration, supporting real‑time monitoring and safety alarm systems.

Adjustable Sensitivity with Analog Output

An onboard potentiometer allows precise adjustment of detection sensitivity to suit different monitoring environments. The analog output signal changes proportionally with gas density, enabling straightforward integration with microcontroller ADC inputs for continuous measurement. This adjustable calibration capability supports both early‑warning gas detection and threshold‑based alarm systems. Simple circuitry and stable operation contribute to long service life in continuous monitoring scenarios.

Gravity Interface for Rapid Prototyping

The sensing module integrates a Gravity connector that enables plug‑and‑play wiring with compatible expansion boards. Direct connection with the Arduino IO expansion shield simplifies hardware assembly for rapid prototyping. Seamless compatibility with Arduino development platforms allows quick integration into environmental monitoring systems, robotics safety mechanisms, and educational electronics experiments without complex circuit design.

Common use cases include gas leakage alarms, smart home safety monitoring, industrial fuel storage detection, and embedded environmental sensing systems. Reliable LPG detection combined with easy Gravity connectivity makes the sensor module suitable for rapid prototyping, educational experimentation, and long‑term gas monitoring deployments.