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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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| | When will the expansion board come out?
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Hi, does anyone know when the expansion board will be available? Thanks, Duncan (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
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| | battery life and charging
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Did someone already try to program the handy board the way to enable it testing the battery´s status and - if necessary - driving to a "docking station" and reloading the battery? (Self-feeding-automatism) Someone an idea how to solve this problem (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
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| | Re: line following
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Chuck, Chuck, Chuck...not EVERYONE in engineering and robotics is male. I, myself, am quite definitely *not*, nor ever will be, male. Engineering is a co-ed field, and women have made their mark upon it. While there are few of us compared to the (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
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| | line following
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I have had great success with black tape on many different light colored backgrounds but I wasn't using discrete components for the sensors and emitters. Instead, I used Omron EE-SY313 amplified infrared photosensors, and plugged them right into the (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
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| | battery life
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(1) the memory should last about a month if the board is turned off, as several have noted. (2) please be aware that the serial interface will *DRAIN POWER FROM THE HB* if the interface itself is not plugged into power. thus do not expect anywhere (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Small gear suppliers?
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Try. Stock Drive and Sterling. (516) 328-3300 ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | gears
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Hello all, There is a company called Small Parts Inc. located in Miami Lakes, FL. They have been a good source for me in the past for all kinds of random stuff. I don't know if they have the specific parts you need, but they are a good shot, and at (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Small gear suppliers?
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We need some small gears for a gear train for a small DC motor. Does anyone know of likely vendors? I want decent quality gears, not plastic! Thanks. ***...*** * Greg Starr, Professor and Graduate Advisor * * Department of Mechanical Engineering ph (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: line following
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(...) The experience is good, I'm just not sure you took away the right lesson from it. :-) Everything Katt say's is true, when you are following lines detecting the line is sometimes not as straight forward as the description would have you (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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