# MQ5 Gas Sensor(EF05033)

## Introduction

MQ5 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.

![](./images/05033_01.png)

## Products Link

[ELECFREAKS PlanetX MQ5 Sensor](https://shop.elecfreaks.com/products/elecfreaks-planetx-mq5-sensor?_pos=1&_sid=71ef73528&_ss=r)

## Characteristic


 Designed in RJ11 connections, easy to plug.

## Specification


Item | Parameter 
:-: | :-: 
SKU|EF05033
Connection|RJ11
Type of Connection|Analog output
Working Voltage|3.3V

## Outlook



![](./images/05033_02.png)

## Quick to Start


### Materials Required and Diagram

 Connect the MQ5 Gas sensor to J1 port and the OLED to the IIC port in the Nezha expansion board as the picture shows.


![](./images/05033_03.png)

***Note:*** A preheating for 3 minutes after powering on is required before using.

## MakeCode Programming


### Step 1

Click "Advanced" in the MakeCode drawer to see more choices.

![](./images/05001_04.png)

We need to add a package for programming, . Click "Extensions" in the bottom of the drawer and search with "PlanetX" in the dialogue box to download it. 

![](./images/05001_05.png)

***Note:*** If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu. 

### Step 2

### Code as below:

![](./images/05033_06.png)


### Link
Link: [https://makecode.microbit.org/_6H75oo6ojfjT](https://makecode.microbit.org/_6H75oo6ojfjT)

You may also downoad it directly below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;"><iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:_6H75oo6ojfjT" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


### Result
 The value detected from MQ5 Gas sensor displays on the OLED screen.

## Python Programming 


### Step 1

Download the package and unzip it: [PlanetX_MicroPython](https://github.com/lionyhw/PlanetX_MicroPython/archive/master.zip)

Go to  [Python editor](https://python.microbit.org/v/2.0)

![](./images/05001_07.png)

We need to add enum.py and co.py for programming. Click "Load/Save" and then click "Show Files (1)" to see more choices, click "Add file" to add enum.py and co.py from the unzipped package of PlanetX_MicroPython. 

![](./images/05001_08.png)
![](./images/05001_09.png)
![](./images/05033_10.png)

### Step 2

### Reference

```
from microbit import *
from enum import *
from co import *
co = CO(J1)
while True:
    display.scroll(co.get_co())
```


### Result
 The value detected from MQ5 Gas sensor displays on the micro:bit.

## Relevant File


## Technique File