 | | Re: Good books about electronics
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(...) Mike, I would also recommend the book: "Electronics (A Self-teaching guide)" by Harry Kybett (1986 by John Willey & Sons) ISBN 0-471-00916-4. It is a very excellent beginning text. It teaches concepts and then you self test yourself every 2-3 (...) (27 years ago, 22-Apr-97, to lugnet.robotics.handyboard)
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| | Re: GPS
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(...) Yep. Me! There weren't any major headaches involved in doing it. Feel free to ask me questions. I may have to get my source from home in order to answer them though. Curt Mills, WE7U Senior Methods Engineer/System Administrator (...) (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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| | Re[2]: motors
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Thanks. I tries that. I even tried to use four of them in parralel. OK, here's what I've discovered...just to let you all in on it and maybe it'll help someone in the future. I pulled the leads from the motor header and powered the motors directly (...) (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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| | Handyboard to Vector 2X compass
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I'm planning to hook a Vector 2X digital compass to my HandBoard. I'm looking for any code for such and interface. It should be simple SPI stuff but I've never messed with the SPI before and would rather not re-invent the wheel. I've checked the web (...) (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motors
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Mar, You might want to try attaching a small (0.1uF) capacitor to the motor leads as close as possible to the motor. Use a ceramic or monolithic ceramic capacitor. That might reduce the motor noise your sonar board sees. Also remember that even (...) (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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| | GPS
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Hi, I want to connect a gps-receiver which provides NMEA-0183 data to the HB. Did anyone connect a gps to the HB before? Carsten (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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| | Using Step-Motors
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A couple people have expressed interest in how to use step-motors with their handyboards. I have used step-motors with my miniboard, and since both the handyboard and the miniboard use two L293D chips to run the motors, I am fairly confident that (...) (27 years ago, 20-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motors
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I haven't had the same poblems, but I have a theory as to your problem. There are two probabilities: 1) The motor is causing too much noise and is interfering with the sonar, or 2)The motor is giving off electrical noise (i.e. electromagnetic waves) (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
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| | motors
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Hi, I have some motor trouble. I have two motors. I have a polaroid sonar. When I run one of the motors, the sonar works. When I run the other motor, the sonar's detected distance jumps arround randomly. The randomness seems to be more at higher (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
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| | hbsonar
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I am trying to run 4 sonar sensors from the HB, and I'm not sure how to go about doing this. I have a copy of the code from the ftp://cherupakha.med...ntrib/kent directory, but I'm pretty bad with assemby language and I'm not sure what I would need (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
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| | Stepper motors driver circuit and .s19 compiler...
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Hi, I heard from fred that there is someone out there who had used stepper motors with the handyboard, I am doing something which need to use stepper motors. Therefore I need your help in this area, please email me how should I go about design the (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
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| | Stepper motors driver circuit and .s19 compiler...
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Hi, I heard from fred that there is someone out there who had used stepper motors with the handyboard, I am doing something which need to use stepper motors. Therefore I need your help in this area, please email me how should I go about design the (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Stepper motors driver circuit and .s19 compiler...
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Good Day All, I also would like more info on this. If not too much trouble, could it be posted to the whole board as well? Take care... (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Good books about electronics
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The ISBN is: 0-521-37095-7 I took the class at harvard that the book was written for. It was a good class. I learned a lot. I'm not so good with the analog stuff though... There is a student manual which is pretty helpful too. It's by Hayes and (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motor driver chip....
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SGS-Thomson makes the L293D and L293E: www.st.com/stonline/...s/1330.htm You can also build a custom H-bridge motor driver using the MAXIM 620&621 MOSFET drivers. Search for Maxim in a search engine. jm (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motor driver chip....
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(...) Depending on the manufacturer, you might be able to get the specs online, usually in the form of PDF files that are the datasheets for the chip. I know national semiconductor does this, and it's very fast and easy...otherwise, you have to try (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Good books about electronics
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By far the best book for all kinds of electronics is "the art of electronics" by Horowitz and Hill. There is not a lot of "what is electricity" (try a good encyclopedia). This book begins with basic network theory and goes from there through just (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motor driver chip....
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see the hb suppliers page for dealers who sell the l293d. (URL) your message you said: (...) n. (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | Good books about electronics
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Hi! I'm very new in this business. So I thought where could I get a good tutorial book about electronic components and the way they work. And most important - what is electricity and how it works. Can anyone advise me? mike (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | motor driver chip....
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hola, I was planning on using the L293D motor chips in a project that I'm working on. I'm going to use polaroid motors to drive a vehicle. I was wondering: -Does anyone know how I could get specs for this chip? -Are there other motor chips that (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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