Instructables
Picture of Air Quality Test Box
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Is DIY a device that can monitor the environmental quality condition at any time a problem for you? Actually, it’s not a tough job. Here, on the desk, is a DIY device which can help me get the informant about the air pollution in the room.

This device can detect the concentration of dust, gas, alcohol and other organic gas in the room. In order to make this process faster and simpler, I choose to use Seeedstudio’s Grove modules.

In addition, its whole shell is made of acrylic and assembled with a few screws. You see, it’s all made by myself.

 
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Step 1: Preparing the Components

Picture of Preparing the Components
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Here are the modules I have chosen:

1.Seeeduino
2.Base Shield
3.Grove - Dust Sensor
4.Grove - Gas Sensor(MQ9)
5.Grove – HCHO Sensor
6.Lipo Rider pro and Battery
7.Grove – OLED Display 128*64

I also make a shell of acrylic and assembled with a few screws. It seems very simple, but enough.

Update: All product is here.

Step 2: Assembly Components

Now, Connect the sensor, display and other modules to Arduino.

First of all, we need to insert the base shield to Arduino board. Then, insert the sensor, ethanol sensor combustible gas sensor and other modules to the Base shield in the following order.

And then Assembing Lipo rider and battery to acrylic pannel.

Step 3: Programming

Now, we have to prepare procedure for it. In fact, these sensors are not so convenient to use. Fortunately, Seeed have provided a library file for us. It costs me 1 more hour to complete this programming. Therefore, if you don’t want to code it, you can download here( Github.). But, please remember to choose the COM port and board.

When you get the code, you will have a file named Air_monitor.ino. Opening it with Arudino IDE (if you haven't, you should donwload it).

After downloading, you can run this device normally. Certainly, if you think it’s inconvenient to connect it with a USB cable, you can instead of it with a battery or even power it with a charger.

mech_4 months ago

How did you calibrate the sensor in order to get μg/m^3??

In the manual the only thing that can help you calibrate it, is the chart of ciggarete smoke and it is in pieces/280ml of air. Not in μg. How did you convert the units to mass? How do you know that 1 particle of PM1 or 2.5 can be related to mass? PM is diameter and not mass. Please if you have info on this I really need it.

Chonghao5 months ago
This dust sensor can detect regional haze? Or can be detected in PM2.5 and PM10?
ncsolution9 months ago
what size box did you use? where did you get it?
xiaobo__ (author)  ncsolution9 months ago
I get it here http://www.seeedstudio.com/depot/skeleton-box-p-1407.html?cPath=55_60
thanks. i missed it for sure on the site.
chrwei1 year ago
you product links are missing the ":" in http:// and so dont' work.

also, neat sensors, but any idea what the values mean? I mean, how much dust is a level that action should be taken?
xiaobo__ (author)  chrwei1 year ago
Dust sensor just get the pm2.5, https://en.wikipedia.org/wiki/Particulates