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Earth Measurements Student Guide for Experiments #1 Through #6

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Earth Measurements Student Guide for Experiments #1 Through #6 Earth Measurements Student Guide for Experiments #1 through #6 Version 1.2 Warranty Parallax warrants its products against defects in materials and workmanship for a period of 90 days. If you discover a defect, Parallax will, at its option, repair, replace, or refund the purchase price. Simply call for a Return Merchandise Authorization (RMA) number, write the number on the outside of the box and send it back to Parallax. Please include your name, telephone number, shipping address, and a description of the problem. We will return your product, or its replacement, using the same shipping method used to ship the product to Parallax. 14-Day Money Back Guarantee If, within 14 days of having received your product, you find that it does not suit your needs, you may return it for a full refund. Parallax will refund the purchase price of the product, excluding shipping / handling costs. This does not apply if the product has been altered or damaged. Copyrights and Trademarks This documentation is copyright 1999 by Parallax, Inc. BASIC Stamp is a registered trademark of Parallax, Inc. If you decided to use the name BASIC Stamp on your web page or in printed material, you must state that "BASIC Stamp is a registered trademark of Parallax, Inc." Other brand and product names are trademarks or registered trademarks of their respective holders. Disclaimer of Liability Parallax, Inc. is not responsible for special, incidental, or consequential damages resulting from any breach of warranty, or under any legal theory, including lost profits, downtime, goodwill, damage to or replacement of equipment or property, and any costs or recovering, reprogramming, or reproducing any data stored in or used with Parallax products. Parallax is also not responsible for any personal damage, including that to life and health, resulting from use of any of our products. Internet Access We maintain internet systems for your use. These may be used to obtain software, communicate with members of Parallax, and communicate with other customers. Access information is shown below: E-mail: [email protected] Ftp: ftp.parallaxinc.com and ftp.stampsinclass.com Web: http://www.parallaxinc.com and http://www.stampsinclass.com Internet BASIC Stamp Discussion List We maintain two e-mail discussion lists for people interested in BASIC Stamps. The BASIC Stamp list server includes engineers, hobbyists, and enthusiasts. The list works like this: lots of people subscribe to the list, and then all questions and answers to the list are distributed to all subscribers. It’s a fun, fast, and free way to discuss BASIC Stamp issues and get answers to technical questions. To subscribe to the BASIC Stamp list, send e-mail to [email protected] and write subscribe stamps in the body of the message. This list generates about 40 messages per day. The Stamps in Class list is for students and educators who wish to share educational ideas. To subscribe to this list go to http://www.stampsinclass.com and look for the E-groups list. This list generates about 5 messages per day. Contents Table of Contents Preface ............................................................................................................................................. 3 Audience and Teacher’s Guides.......................................................................................................................................... 3 Copyright and Reproduction .............................................................................................................................................. 4 Special Contributors ............................................................................................................................................................ 4 Experiment #1: Temperature Transducer............................................................................................ 5 Parts Required....................................................................................................................................................................... 6 Build It...................................................................................................................................................................................... 6 Temperature Transducer..................................................................................................................................................... 8 Morse Code ..........................................................................................................................................................................10 Challenge! .............................................................................................................................................................................22 Experiment #2: Data Logging............................................................................................................ 23 Parts Required.....................................................................................................................................................................24 Program It.............................................................................................................................................................................25 Advanced Topic: Detecting a Double-Click ....................................................................................................................30 Learning to READ and WRITE, the Basics ........................................................................................................................32 Talking Thermometer, Morse Code Revisited................................................................................................................36 Challenge! .............................................................................................................................................................................44 Experiment #3: Temperature Probe for Micro-Environments ............................................................ 47 Parts Required.....................................................................................................................................................................47 Analog Temperature Sensor .............................................................................................................................................48 BASIC Stamp Pins, Capacitors, Review of the BASICs .................................................................................................49 Simple Resistance Detector..............................................................................................................................................51 Resistance Detector Using RCtime..................................................................................................................................55 Temperature Sensor Probe Using the AD592 and RCtime.........................................................................................57 AD592 Calibration...............................................................................................................................................................60 Talking Thermometer Revisited, Two Channels.............................................................................................................64 Automatic Calibration (Advanced Topic) ........................................................................................................................66 Some Earth Measurements Temperature Experiments..............................................................................................69 Challenge...............................................................................................................................................................................72 Earth Measurements Student Guide Version 1.2 • Page 1 Contents Experiment #4: Light on Earth and Data Logging................................................................................ 75 Parts Required .....................................................................................................................................................................76 Photodiode as a Light Transducer ...................................................................................................................................77 Photodiode and the BASIC Stamp as a Digital Light Meter ........................................................................................86 Temperature and Light Meter...........................................................................................................................................91 Light and Temperature Logger, Using RAM Memory....................................................................................................92 Experiments with the Data Logger ..................................................................................................................................97 Challenge! ...........................................................................................................................................................................100 Experiment #5: The Liquid Environment .......................................................................................... 101 Introduction .......................................................................................................................................................................101
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