 | | Re: Pseudocode
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I think what you may be wondering is how does the code do all this at once instead of sequentially as normal code runs. If you are not wondering this then I'll tell you anyway. The awesome feature of the handyboard is the pcode. The pcode is a (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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Cutting the trace is only ONE solution! I had the same problem and did not consult the handyboard FAQ on the web. This FAQ gives you some options if you don't want to damage your board. Another solution is to use your own custom H-bridge, or do like (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pseudocode
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(...) One thing to remember: the input is the world (through the sensors) and the output are the robots actions on the world. A program outline repeat turn on drive motors repeat read wall/obstacle sensor until sensor reads an obstacle stop motors (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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The HB gets reset due to the large current drawn from the motors. You should separate HB and motors power supply. What you need is to cut the trace (+ve motor power share with HB main power) nearby J13. Then, apply motors power supply to J13 and (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Pseudocode
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Hello, Im very new to the list and to the entire concept of all of it basically. but- i'll cut to the chase (its breif) Just learning c programming i ran across a chapter in the book which explains pseudocode and its impact. I dont know how many (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Handyboard and TTL ?
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L.S. I come across all nice little modules wich send out TTL signals like light sensors, clock modules etc. I would like to use a couple of them to spice up my robot but haven't got a clue what TTL is and how to use it. I tried to look on the (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | LEGO motors and the handyboard ?
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L.S. Recently I connected 3 standard LEGO motors to the Handyboard to power a 4 wheel driven LEGO model I build. With the standard LEGO (9v 7VA) adapter I can easily run 3 motors at once without any noticable slow down of any of them. But when (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | polariod sonar system
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does anybody have a circuit for a polariod sonar/traking system, I've got three polariod transducers in my spare's box and I desperatly want to use them on my 'bot. (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | mini ssc
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Hi, Has anyone successfully interfaced the handyboard with Minissc II servo controller by lynxmotion? I'm thinking about purchasing one, however is it cheaper to build one yourself? anyone did this? thanks, phet (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11
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The 68hc11s all have the same core processor. They are not all the same; they have different peripherals, pins, ports, etc. The a1fn is the a8 with the rom disabled. So it is pin compatible. Check out the pink book or www.mot.com for more details. (...) (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Homebrew Sonar
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Here's an idea for homebrew sonar that I keep mulling over but haven't built yet. If anyone builds one of these be sure and tell me if it doesn't work so I won't :-) Basically the idea goes like this: take a signal generator (like the EXAR chip) and (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Homebrew Sonar
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Check out (URL) There's some basic theory and 6811 assembly code in there for doing time-of-flight stuff with el cheapo 40kHz transducers we got from All Electronics Corp and some homebrew circuitry. Colby --- "King, Terry" wrote: (...) --- end of (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Homebrew Sonar
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(...) Check this site out, it might be what your looking for: (URL) pretty complete with theory, schematics, construction advice, etc.. I hope it helps. Terry King Terry.King@fmr.com (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | mc68hc11
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hi Are all chips in the mc68hc11 family alike? in other words, coulda mc68hc11a1fn chip replace any other mc68hc11 chip? Ore are the circuitry diffrent? Also, i was checking out motorolla's mc68hc11 website, and they had a 'hc11 referense and (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11a1fn
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(...) Check out (URL) for 6811 info, Motorola's own site with a wealth of good downloadable stuff. Regards Colin Barnard Miranda Robotics 'O brave new world that has such creatures in it' 54 London Road Teynham Kent ME9 9QN England (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11a1fn and sonar
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Hi, In addition to de reference manual I started reading a book called "Microcontroller technonoly, the 68hc11" by Peter Spasov (ISBN-0-13-583568-2). I think it's a rather good book. It begins with the fundamentals of microcontrollers. It handles (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | mc68hc11a1fn and sonar
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hello, everyone I have 2 questions: Does anyone know of any good books or sites about the motorolla mc68hc11 family? I'd like to understand on how this actually works and stuff. Is the Motorola mc68hc11 reference manual a good book for the job? Are (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | PCode
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Hello, I'm trying to decipher IC's command stream w/ the handyboard. I've downloaded the IC source, but before spend a lot of time munging the code, are there other documents describing the theory of the Pcode interpreter? I imagine it was a lot of (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | Re: IR and Sonar
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Try Radio Shack, Digikey, Mouser Electronics for IR stuff. Polaroid OEM Components Group. 800 392-1170 2 sonars for $99. It's a bit pricey so whether it's worth the money depends on you. It may be worth is just to get used to tinkering with (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Dual Hall Effect Sensor hook up
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I have the Micro 8SS27 dual hall effect sensor (received from Gleason Research), which I intend to use for a shaft encoder. Can someone help me figure out how to hook it up? Thanks. To get random signatures put text files into a folder called (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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