2. Lesson 2 - Playing with levers

Introduction

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Construction

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Base module for EV3 Kinesthetic and Memory Game

This is the base module of EV3 Kinesthetic and Memory Game. The goal of this module is to present a variety of places for the rest of the modules to be attached.

Lever module for EV3 Kinesthetic and Memory Game

This module is meant to be used in EV3 Kinesthetic and Memory Game and is attached to the base of the robot. This module uses the rotary sensor, embedded in every motor, to detect when the player has pulled the lever.

Touch sensor module for EV3 Kinesthetic and Memory Game

This module is meant to be used in EV3 Kinesthetic and Memory Game and is attached to the base of the robot. This is the simplest module for constructing and programming. At the bottom, a channel is left for the cable to pass through.

Construct one of each module shown above. Today you don't need 2 touch sensor modules.

Attach the modules to the base of the robot. Connect the lever module to port B and the touch sensor module to port 1.

After building the robot, close the box to keep the desk clear.

Gather all the parts from the desk and put them back in the box.
Close the box and move it aside so it's out of your way.

Programming

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Example solution for the tasks in lesson 1 from course 4.0

This program is the most basic version of the game played with EV3 Kinesthetic and Memory Game. For the program to work correctly, there must be two touch sensor modules attached to port 1 and port 2. The other modules are not required from this program.

Examine how the program was structured and remember how it worked.

Software design principles DRY

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Remember how to work with MyBlocks

Creating My Blocks in EV3 Software

Adding Parameters to My Blocks

Output parameter

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Apply the DRY principle in the hinting module of the program

In another program, create a numeric variable with the name "Action" and give it the value 1. Then program the robot to hint its value the same way as the hinting module does for the variables "Step1", "Step2" and "Step3".

Create a MyBlock with the name "Hint" from the variable "Action" and the switch that checks and hints it.

Add an input parameter to the MyBlock and connect it to the variable "Action" in such a way that the input is saved in the variable.

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Return to the main program and replace the switches that hint the values of "Step 1", "Step 2" and "Step 3" with the MyBlock you've created. Test the program!

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Apply the DRY principle in the checking module of the program

In another program, create a numeric variable with the name "Action" and give it the value 1. After that program the robot to check it in a loop block "Game" the same way it did the variables "Step1", "Step2" и "Step3" in the main program.

Create a MyBlock with the name "Turn" from the variable "Action" and the loop block in which it's checked.

Add an input parameter to the MyBlock and connect it to the variable "Action" in such a way that the input is saved in the variable.

Replace all the loop blocks "Game" in the main program with your new MyBlock "Turn".

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Remember how to work with the rotation sensor

Rotation sensor - How does it work?

Motor Rotation Sensor - Switch Block

Rotation sensor - Wait block

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Change the condition of the switch that checks the touch sensor on port 2, so that it checks if the motor on port B is rotated more then 90 degrees.

Test the program. Do you notice any problems with it?

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Motor current power sensor

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Fix problem 1: Change the hints so that it is more specific. Use sounds, pictures and lights if you need to.

Fix problem 2: Program the robot, after it detects the lever has been pulled, to wait till the motor power drops to 0 and then to return the motor to its starting position. The robot should do this BEFFOR it checks if the lever was the correct action for that turn.

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Save your program in this task. You will need it in the next lesson.

Bonus Tasks

Program the game to be played with 4 turns.

Program sound "Touch" to be played as a hint for the touch sensor module and sound "Turn" to be played as a hint for the lever module.

Tasks to finish a class

Take pictures and make videos of your robots
Disassemble and arrange the robot
Arrange your workplace
- It is important to arrange the electronics of the robots on the cover of the box.
- Wind up the programming cable so that it is assembled.
- Put the robot cables next to the electronics.
- Wind up the mouse cable around the mouse.
- Wind up the cable of the laptop charger in a way that your teacher will show you.
- When you turn off the computer, leave it next to the robot box.
Turn off all programs on your computer
Exit FLLCasts
Shut down your computer
Put your chair under the desk.

2. Lesson 2 - Playing with levers

Introduction

Construction

Programming

Waiting for translation from Bulgarian

Waiting for translation from Bulgarian

Introduction

Construction

Programming

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