38. MQ5 Analog Gas Sensor Brick(EF04029)

38.1. Introduction

MQ-5 Gas sensor has a good sense to liquefied gas, natural gas and coal gas that are widely used in cities, but it doesn’t work on ethanol or smoke.

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38.3. Characteristics

Standard 3-pin GVS port is easy to plug.

38.4. Specification

Item | Parameter :-: | :-: SKU|EF04029 Connections Type|Analog Pins Definition|S-Sigal V-VCC G-GND Working Voltage|3V Size|38x27mm

38.5. Outlook and Dimension

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38.6. Quick to Start

Materials required and connections diagram

Connect to P1 port as the picture shows.

Take sensor:bit for example

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Program as the picture shows

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Reference

Link：https://makecode.microbit.org/_KJVXj9Co2UXU

You can also download it directly below:

Result

Preheat it for 3 minutes after connections, detect the gas by approaching the probes to the gas while the returned value is almost stable. With the change of the Carbon Monoxide’s concentration, the returned value gets bigger with the growing of it.

38.7. Revelent Case

38.8. Technical File