 | | Re: Sonar question
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(...) The battery for the handy board is a 9.6V cell (8 * 1.2V cells in series.) A normal 1n400X diode will drop 0.7V each. (6 * 0.7 = 4.2) 9.6 - 4.2 = 5.4V (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Sonar question
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I'don't even bother using diodes at all I just use a 7805 voltage regulator that is well heat sinked and never had a problem with it -----Original Message----- From: ruizvic@mx1.ibm.com <ruizvic@mx1.ibm.com> To: handyboard@media.mit.edu (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: 2sonar
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(...) I haven't used the transducer multiplexor myself; I decided to just hook up a second sonar module to the HB in the same manner as the first is hooked up. It looks like using the multiplexor ought to be fairly simple, though. First off, in the (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Sonar question
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Hi to all, I would like to know what difference there are if I connect the 6 diodes between the Handy Board & the Polaroid Sonar Card. Can I connect the cards without diodes? I tested the voltage at the Catode at the end of the 6th diode and my (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Assembler math/PID
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Hello, I am writing PID code that runs on the system interrupt. I am finding that I have to rewrite alot of the great math functionality available through IC. Does anyone know of a way to use an IC function on a regular system interrupt schedule? (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | motor code questions
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Hi, I got my Handyboard up and going and was trying the following code for driving my motors. (Figure I would try known code before forking out on my own). The code I got from the 'Inspiration to implemntation' book. Anyways it does not seem to (...) (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
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| | sonar
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what program to control about 2sonar.jpg? how i adjust program (sonar.c) for 2 sonar in picture 2sonar.c? (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Hacking Servos
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Thank you all very much for your help :) Best, Andre. (...) ===...=== Andre Philippi - Applications Developer | Phone: 626-296-5016 philippi@corp.earthlink.net | Fax: 626-296-5113 Earthlink Network, Inc. | 3100 New York Drive (URL) | Pasadena, CA (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Hacking Servos
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Yeah, I remember seeing that one; I may actaully have the info at home... Anyway, an R/C servo has a hard stop to limit travel because the electronics use a simple potentiometer on the output shaft for position feedback. These pots typically have (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Hacking Servos
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(...) I put together a page with detailed instructions that has been used by a number of high school students without any problems. The robot is based on a Basic Stamp but the servo modifications are easy and work with any controller. (URL) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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