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- #1103
- 08 Feb 2019
An exemplary solution to the tasks in the section "Creating our own Alarm" and task "Add Status Light to your alarm. Program the brick to change the green light to yellow or red when the alarm goes off.":
An exemplary solution to the task "Program the pressure plate to ring the alarm when the phone is lifted off by using a wait block.":
Cut the wire - Is there an alarm when you disconnect the cable of the sensor?:
To solve this task, you should know how the touch sensor works. The touch sensor closes an electric circuit. Therefore, when we cut the wire, the program will see the sensor as if it has not been pressed.
Now have some fun! Try to cheat the alarm. Steal your phone without ringing the alarm or shutting down the robot.
You just have to put something heavy on the plate or press it by hand and then remove the phone.
An exemplary solution to the tasks in the section"Finding the direction of an object with Pressure Plates":
Courses and lessons with this Tutorial
This Tutorial is used in the following courses and lessons
Robotics with LEGO - Level 3.0 - Security systems
This is the fifth level of the Robotics with LEGO curriculum for students in fifth to twelfth grades.
In this level students will learn how to work with data measured by the sensors. The concept of Algorithm is introduced and the programs perform calculations without knowing the values beforehand. The programming blocks transfer data between each other via data wires. The robots are designed to address the problems of security systems. Variety of alarm systems are built and the physical principles of different security methods are considered.
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Lesson 1 - Smart security plates
Introduction: Museum Security
Did you know that some pieces of art, for example statuettes, have a really high price, sometimes reaching millions of dollars/euros? This is one of the main reasons why such pieces of art are so tempting for robbers. In order to prevent them from being stolen, various alarm systems for museums and galleries have been developed over the years. Nevertheless, when one has a clear goal, one becomes exclusively crafty, especially when talking about robbers. In this lesson we are going to focus on various security devices and the ways robbers can be caught/ hacked. Will we manage to come up with the most secure system?
Today we are going to build security devices for a museum with highly valuable exhibits. The aim of our robots will be to detect whether there is an intruder in the museum hall and whether the exhibit is on its stand. For the purposes of our lesson, we are going to use a mobile phone or the robot’s brick as an exhibit.
Later, we are going to use the already programmed stand to play Indiana Jones and try to steal the valuable statuette without being detected. Then, we will move to something more practical – namely, we’ll try to automate a store.
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