MQ2 gas sensor with Arduino pro mini case

by unchiu, published

MQ2 gas sensor with Arduino pro mini case by unchiu Jan 8, 2017



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Just a case for gas sensor with Arduino Pro Mini and a computer buzzer.
I used an USB cable for powering.
Arduino code is using the digital output of MQ2 sensor so you can adjust the threshold from the bottom potentiometer.
By default the used sensor have HIGH output on D-OUT. Other sensors may be different.

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do i need the original design file to find out the measurements of mq sensor being used or can i make use of given stl file to find out.

I have 9 MQ sensors whiich i have to fit into one box along with a Arduino mega can you guide me in designing a box for that. I have very basic idea about CAD. I was thinking of copying your style of fitting MQ sensor.

Hi. I am only an entry level designer, I can't help you, sorry. It took me a long time to make the objects, I believe that a professional designer can make this in 1 hour. But you can import my files in SketchUp and take measures or copy blocks from there.

I'm working on something similar for my printer, though I use an Arduino Nano 3, and I added a 230v relay to cut the power to the printer. I might steal a few of your ideas for securing the MQ2 sensor :-)

There is no problem... as you can see I did not used screws to secure the sensor, the lid and the wires are keeping it in place.