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December 2001
Smarter Infrared Proximity Detection Rich Kappmeier goes to into great detail on how he implemented a reliable IR proximity detection system.
A Microphone Frequency Sensor Eli Kolberg shows us an interesting circuit for doing frequency detection using an A/D port on your microcontroller and a National Frequency to Voltage converter.
Interfacing the GP2D02 to a Microchip PIC Aaron Ramsey shows us how to implement a GP2D02 IR Distance Sensor using a PIC chip and a servo motor.
How to build a spinning sign Theodore Johnson explains how he built a spinning sign, including some really interesting ideas about rotating power connections.
Building a variable voltage power supply Ross Wolin has a project building a power supply with a variable output voltage.
Hot Links   Here are this months list of interesting links. If you find a cool one, send it to us and we will add it to the list of Hot Links. This list will change each month.
Standard Technologies of the Seattle Robotics Society   Just getting started? You might like to check out this link that documents some of the standard technologies that the Seattle Robotics Society suggests for those just starting out. This article explains a lot of different aspects about building a robot. Have a look!
http://www.oricomtech.com/projects/legs.htm   Dan Michaels has done some research about how animals move.
http://www.learn-c.com/technology_education_sites.htm#control   An interesting collection of educational links dealing with technology.
http://www.epanorama.net   A fantastic place to find all sorts of technical information on a wide array of subjects. This should be in your favorites folder.
Scheduled Events   Here is a list of upcoming events and tech sessions
October 20th   Our regular monthly meeting
Monday Night Chat   Every Monday Night, we have a chat session. Join us to talk robots, ask questions, or just hang out with the gang.


Quick Notes   Interesting bits of news and trivia
Authors Needed!   The Encoder is actively seeking authors to help write the Encoder. The key to growing in this hobby is communicating your experiences to others. The Seattle Robotics Society Encoder is one of the premier resources for amateur robotics on the Internet. Each issue is read by thousands of people around the world. Please consider sharing ideas with us. Check out The Encoder Writers Guide for information about how you can help spread the excitement!

For information about submissions or comments about the online Encoder, contact the Encoder Editor