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Learning Lego Mindstorms EV3

You're reading from   Learning Lego Mindstorms EV3 Build and create interactive, sensor-based robots using your LEGO MINDSTORMS EV3 kit

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Product type Paperback
Published in Jan 2015
Publisher
ISBN-13 9781783985029
Length 284 pages
Edition 1st Edition
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Author (1):
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Gary Garber Gary Garber
Author Profile Icon Gary Garber
Gary Garber
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Table of Contents (14) Chapters Close

Preface 1. Engineering Notebook FREE CHAPTER 2. Mechanical Design 3. Drive Train and Chassis 4. Sensors and Control 5. Interacting with EV3 6. Output from EV3 7. Advanced Programming 8. Advanced Programming and Control 9. Experiment Software and Data Logging 10. Other Programming Languages 11. Communication between Robots 12. Advanced Robot – Gyro Boy Index

The RST My Block


The RST My block resets all of the variables to their starting values and resets the readings on all of the Gyro and Motor Rotation sensors. The main programming loop starts each and every time the robot is set upright. Since the RST My Block is inside of the main programming loop, it is not merely an initialization block that is only run at the beginning of the entire program, but every time that the robot is set upright it goes to enter the balancing loop. The My Block begins by resetting the values for the shaft encoders on both of the large motors. Next, the subroutine resets the value for the Gyro Sensor. When you look at the Timer Sensor block, you should note the ID on the Timer block, which indicates that this is the second Timer block, not the first Timer block. This timer is used to detect when the robot has fallen over. Since you cannot name timers, a comment in the code would have been really helpful here. Numerous numeric variable blocks are set to zero. There...

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