August 2010
Intermediate to advanced
288 pages
13h 21m
English
Content preview from The Art of LEGO MINDSTORMS NXT-G ProgrammingBecome 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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avoiding a busy loop
If you watch closely, you may notice that after you add the code to display the motor position, the AroundTheBlock program doesn’t get the TriBot back to the starting point as accurately as the original program did. The problem is that the Move blocks on the top Sequence Beam are a little less accurate in the new program because the NXT is spending about half its time displaying the motor position.
The code to display the motor position is an example of a busy loop, one that repeats as fast as possible and consequently uses a large portion of the NXT’s processing power. You can improve the accuracy of the Move blocks by slowing down the display loop, which will allow the NXT to spend more of its time making sure the movements ...
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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.
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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.