Analog gas sensor (MQ-5) for Microbit – Elecfreaks Octopus

Elecfreaks Octopus – MQ-5 Analog Gas (Smoke) Sensor for Microbit Sensor module based on MQ-5 component, particularly sensitive to flammable gases such as LPG, city gas, methane, propane, as well as light combustion such as smoke and alcohol. The sensor produces an analog signal that varies according to the gas concentration, and includes a potentiometer for adjusting the sensitivity. Suitable for simple and quick use with Micro:bit or Octopus:bit, with fast response, long durability and Plug-and-Play connection.

Key Features
High sensitivity and flexible use
Detects a wide range of gases — LPG, i-butane, propane, methane, alcohol, hydrogen, smoke — with fast response and potentiometer adjustment.

Simple Plug-and-Play connection
Connects directly to Micro:bit or Octopus:bit via GVS (Signal / VCC / GND) connection.

High sensitivity, durability and stability
Based on SnO₂ layer, with fast response time, long-life design and structural simplicity.

Operating voltage included
Operates on a voltage of about 5V (sometimes also AC), including the need to preheat before use to obtain a stable result.

Suggested applications
Suitable for educational projects on gas leak detection, home safety systems, electronic hobbies and STEM solutions.