Here Comes the Sun - Lego

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Version 2. This version uses a Loop instead of the Timer Fork. This program canbe written in Level 4. This program is harder to understand and use than Version1. The number of loops needed for the car to complete one rotation must befound by trial and error.Here is program for capturing light sensor readings every hundredth of onesecond.©2002 The LEGO Group. LEGO, Invent & Investigate and RCX are trademarks of The LEGO Group.This page may be photocopied for non-commercial educational use. All other rights reserved.8
Testing the carsThe more complex algorithm works well in a wide range of settings as long as thelight conditions remain constant while the car is turning. The simple algorithm, byit very nature, is much more sensitive to shadows, glare, and other problems withthe lighting. It works best in a dim room with a single light source near the car,such as a reading lamp or a powerful flashlight.ExtensionThe position of the sun changes during the day. Modify the car so that if the lightshifts while it is parked, it will rotate to find the new brightest spot.Add just three commands to the original program for a solution to the extensionAt the end, right before Stop Data Logging, add a Wait for Dark icon followed bya Jump. Place the corresponding Land near the beginning, right after Start DataLogging.©2002 The LEGO Group. LEGO, Invent & Investigate and RCX are trademarks of The LEGO Group.This page may be photocopied for non-commercial educational use. All other rights reserved.9
Page 1 and 2: Here Comes the SunThe ChallengeInve
Page 3 and 4: UploadAdd a new page and upload the
Page 5 and 6: Teacher’s Notes for Here Comes th
Page 7: Sample ProgramsHere is one possible

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