February 2015
Beginner
206 pages
4h 16m
English
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Motor control with a transistor
Analog outputs can be very useful sometimes and not just to change the brightness of an LED. There are plenty of devices that operate on an analog signal; motors, for example, where you can change its speed by varying the voltage you apply to them.
However, motors can be sometimes tricky to operate, mainly due to the fact that they are big current consumers. A typical toy DC motor can easily consume more than 200 mA when running without a load and up to 1 Amp when stalled.
We mentioned in the previous chapter that an Arduino pin can't give more than 40 mA, or it could burn. So, how can we deal with a motor using an Arduino? Well, usually when dealing with high-current devices, we use a driver circuit that allows the ...
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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.