May 2021
Intermediate to advanced
128 pages
5h 30m
English
Content preview from Make: Volume 77
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HOW DOES A GAS SENSOR WORK?
There are several kinds of gas sensors out
there, but the technique applied the most
commonly involves using a MOS (metal
oxide semiconductor) which, when heated,
starts reacting with the gases contained in
the air, causing its resistance to change.
From there, chemistry is the least of your
concerns as a good ol’ voltage divider is all
you need to measure the resistance — hence
gas concentration — in your project. The
sensor used in this build even has its own
microcontroller that takes care of that for
you, and then exposes the readings in digital
form, over I²C.
As gas sensors involve heating the metal
oxide sensing ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.