The next level of difficulty introduces self-crossing paths and bending lines. At this stage, we’ll create our first and simplest memory-based program.
For this challenge, it is assumed that the field layout is unknown before the competition, making it impossible to hardcode a specific sequence of turns.
The main challenge with the crossed section is that when the robot passes it, it registers turns in both directions. Later, when the robot encounters an actual turn, it may choose the wrong path since there are two registered turns. To address this, we add one variable to help the robot remember the last detected turn. This allows the robot to prioritize the most recent registered turn.
We’ll call this variable "Last Detected Turn." Instead of directly calling the turn functions in the program, we’ll use a "Prioritize Turning" function, which will choose the direction to turn based on this variable.
For readability, we haven’t used this variable to verify if a turn exists in a particular direction, as doing so would add complexity, even though it would reduce the number of command blocks. We mention this to show there are ways to enhance the program, and you should focus on understanding the method used here.
Този Урок е използван в следните курсове и занятия.
This is the Line Following course, where you’ll explore essential techniques to help your LEGO robot follow a line with accuracy and stability! We will begin by covering the fundamental concepts of line following, starting with basic wobble line following, which teaches how robots detect and respond to lines. Then, we'll progress to more advanced methods like proportional line following, allowing smoother tracking by adjusting speed based on error values. Finally, you'll dive into the widely-used PID line following technique, where you'll learn how to tune parameters for optimal robot performance. Whether you're a beginner or looking to enhance your robotics skills, this course will guide you through building, coding, and refining your robot's line-following capabilities.
The next level of difficulty introduces self-crossing paths and bending lines. At this stage, we’ll create our first and simplest memory-based program.
For this challenge, it is assumed that the field layout is unknown before the competition, making it impossible to hardcode a specific sequence of turns.