|Name of Activity||NXT Alarm|
|Keywords||alarm, sensor, security, NXT, proximity, ultrasonic sensor|
|Grade Level||4, 5, 6, 7, 8, 9+|
|Time||1 Hour Total|
|Brief Description||Build and program a security system using an NXT. The alarm should be triggered by the proximity (ultrasonic) sensor.|
|Lesson Objectives:||- To learn about programming using the proximity sensor.
- To apply programming to real life problems.
|Materials Needed:||One NXT brick per group
One or more proximity sensor per group
Assortment of pieces to attach proximity sensor
Computers running MINDSTORMS NXT software
|Preparation and Set Up:||Set up computers running NXT Software.
Arrange students in groups of two.
Distribute necessary materials.
|Necessary Background||Programming is used in real life situations. Programming is used in a wide variety of devices to enhance our lives in terms of safety, ease, entertainment, transportation, etc. This activity is a good example of a way that programming can be used in the real world.|
|Extensions:||Use multiple sensors to trigger the alarm. Have a different response for each
Build an NXT alarm clock or timer.
Attach the NXT alarm to a diary or box. Build something to keep people from opening the diary/box.
Program the NXT so that a user needs to enter a security code to turn off the alarm.