Line follower algorithm - Revision history

Mol: /* Example Code */

2020-10-25T17:49:06Z

Example Code

← Older revision		Revision as of 20:49, 25 October 2020
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	== Example Code ==		== Example Code ==

	Zig Zag never drives straight. Either it turns to left or right. However, it can be made very fast, and reliable---of course depending on the line. The turning part is coded into ''if else'' block which is in the loop.		The ''Zig Zag'' never drives the robot straight. Either the robot turns to the left or to the right. However, the robot can be made very fast, and reliable---of course depending on the line. The turning part is coded into ''if else'' block which is in the loop that continuously examines the line.

	== Exercises ==		== Exercises ==

Mol: /* Theory */

2020-10-25T17:47:44Z

Theory

← Older revision		Revision as of 20:47, 25 October 2020
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	== Theory ==		== Theory ==

	''Zig zag'' algorithm turns the robot to right if the sensor sees white, and to left if the sensor is on the black. Or vice versa. The algorithm is easy to program using only one if block and loop block. The speed and turning value need to be considered and adjusted.		The ''Zig zag'' algorithm turns the robot to right if the sensor sees white, and to left if the sensor is on the black. Or vice versa. The algorithm is easy to program using only one if block and loop block. The speed and turning value need to be considered and adjusted.

	[[File:Zigzag.png\|thumb\|''The Zig Zag'' algorithm.]]		[[File:Zigzag.png\|thumb\|''The Zig Zag'' algorithm.]]

Mol: /* Sensors */

2020-10-25T17:47:06Z

Sensors

← Older revision		Revision as of 20:47, 25 October 2020
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	=== Sensors ===		=== Sensors ===

	The color sensor is used to read the color.		The color sensor is used to read the color of line and surroundings.

	== Example Video ==		== Example Video ==

Mol: /* Introduction */

2020-10-25T17:45:50Z

Introduction

← Older revision		Revision as of 20:45, 25 October 2020
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	== Introduction ==		== Introduction ==

	The easiest line follower algorithm is Zig Zag algorithm, which ~~goes~~ like zig zag and never straight. However, it is funny to observe the movements of the robot, and test the meaning of the different parameters.		The easiest line follower algorithm is the Zig Zag algorithm, which makes the robot move like zig zag and never straight. However, it is funny to observe the movements of the robot, and test the meaning of the different parameters.

	=== Aim ===		=== Aim ===

Mol at 17:44, 25 October 2020

2020-10-25T17:44:38Z

← Older revision		Revision as of 20:44, 25 October 2020
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			<languages />

			<translate>

	== Introduction ==		== Introduction ==

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	Back to [[Mahtavaa Matematiikkaa 2020]]		Back to [[Mahtavaa Matematiikkaa 2020]]

			</translate>



	[[File:Mahtavaa matematiikkaa.png\|thumb]]		[[File:Mahtavaa matematiikkaa.png\|thumb]]

Mol: /* Aim */

2020-10-16T18:53:51Z

Aim

← Older revision		Revision as of 21:53, 16 October 2020
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	=== Aim ===		=== Aim ===

	If block (programming). Color.		If block and loop block (programming). Color.

	== Robot ==		== Robot ==

Mol: /* Example Code */

2020-10-16T18:53:23Z

Example Code

← Older revision		Revision as of 21:53, 16 October 2020
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	== Example Code ==		== Example Code ==

	Zig Zag never drives straight. Either it turns to left or right. However, it can be made very fast, and reliable---of course depending on the line. The turning part is coded into ''if else'' block which is in the loop.		Zig Zag never drives straight. Either it turns to left or right. However, it can be made very fast, and reliable---of course depending on the line. The turning part is coded into ''if else'' block which is in the loop.

	~~[[File:Zigzag.png\|thumb\|Zigzag algorithm]]~~


	== Exercises ==		== Exercises ==

Mol: /* Theory */

2020-10-16T18:53:05Z

Theory

← Older revision		Revision as of 21:53, 16 October 2020
Line 21:		Line 21:
	== Theory ==		== Theory ==

	''Zig zag'' algorithm turns to right if sees white, and to left if the sensor is on the black. Or vice versa. The algorithm is easy to program using only one if block. The speed and turning value need to be considered and adjusted.		''Zig zag'' algorithm turns the robot to right if the sensor sees white, and to left if the sensor is on the black. Or vice versa. The algorithm is easy to program using only one if block and loop block. The speed and turning value need to be considered and adjusted.

	[[File:Zigzag.png\|thumb\|''The Zig Zag'' algorithm.]]		[[File:Zigzag.png\|thumb\|''The Zig Zag'' algorithm.]]

Mol: /* Robot */

2020-10-16T18:52:28Z

Robot

← Older revision		Revision as of 21:52, 16 October 2020
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	== Robot ==		== Robot ==

	Almost any ~~root~~ will do, but this example is done using Asimov 2/ Verne.		Almost any robot will do, but this example is done using Asimov 2/ Verne.

	=== Sensors ===		=== Sensors ===

Mol at 18:52, 16 October 2020

2020-10-16T18:52:14Z

← Older revision		Revision as of 21:52, 16 October 2020
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	== Introduction ==		== Introduction ==

			The easiest line follower algorithm is Zig Zag algorithm, which goes like zig zag and never straight. However, it is funny to observe the movements of the robot, and test the meaning of the different parameters.

	=== Aim ===		=== Aim ===

			If block (programming). Color.

	== Robot ==		== Robot ==

			Almost any root will do, but this example is done using Asimov 2/ Verne.

	=== Sensors ===		=== Sensors ===

			The color sensor is used to read the color.

	== Example Video ==		== Example Video ==

			<youtube>DN2prlLoyPo</youtube>

	== Theory ==		== Theory ==

			''Zig zag'' algorithm turns to right if sees white, and to left if the sensor is on the black. Or vice versa. The algorithm is easy to program using only one if block. The speed and turning value need to be considered and adjusted.

			[[File:Zigzag.png\|thumb\|''The Zig Zag'' algorithm.]]

			== Example Code ==

			Zig Zag never drives straight. Either it turns to left or right. However, it can be made very fast, and reliable---of course depending on the line. The turning part is coded into ''if else'' block which is in the loop.

			[[File:Zigzag.png\|thumb\|Zigzag algorithm]]


	== Exercises ==		== Exercises ==

			* Use the other side of the line to follow the line
			* Make the robot to change the side of the line during the line following: Thus, after following the line e.g. 2 wheel rotations, use the other side of the line
			* Make a robot with two color sensors, and use the information from the other sensor to stop the robot when the other sensor recognizes black line.
			* Make a robot with two color sensors, and make the robot to follow a line that is in between the two sensors.
			* Make a robot with two color sensors, and make the robot to follow first the line with left sensor, then after two wheel rotations use the other sensor to follow the line to the end.