Book Image

Learning Lego Mindstorms EV3

By : Gary Garber
Book Image

Learning Lego Mindstorms EV3

By: Gary Garber

Overview of this book

Table of Contents (19 chapters)
Learning LEGO MINDSTORMS EV3
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
10
Other Programming Languages
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...