June 2011
Intermediate to advanced
320 pages
6h 39m
English
Content preview from 15 Dangerously Mad Projects for the Evil GeniusBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 8Persistence-of-Vision Display
ATOP THE EVIL GENIUS’ LAIR, there is a sign that is holographic in appearance and displays the slowly rotating message “Hello.” The sign uses a vertical line of multicolor LEDs that rotates rapidly, producing a persistence-of-vision effect (see Figure 8-1). The main purpose of such a display is to help the Evil Genius find his way back to the lair, exhausted after a hard day achieving world domination.
This project has two parts, an Arduino microcontroller-based LED unit that sits on top of the second part of the project: the motor and motor control unit. This controls the speed of the motor that spins 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.