 | | Re: resistor pull-up help!
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the exp bd inputs plug into the inputs on the main HB. so you still have to remove the pullup on the main HB. just cut the short trace on the underside of the board between the signal input pin and the pullup resistor. f. In your message you said: (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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Actually Jake, I'm having a similar problem right now, with regard to loss of RAM capabilities. I've been testing a new Polaroid 6500 sonar (which now works!) on the HB and I've got it hooked up through the exp. board. I tried to run a simple (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | resistor pull-up help!
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Hi all, I'm trying to connect a pair of GP2D12 to my handyboard. I know there is an issue with the handyboard pull-up resistors and these devices so I figured I'll try to use the unused LEGO sensor connectors on my expansion board (I don't have any (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | RE: Required tools for assembly
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Bob: If you have major problems with the handyboard you would have better luck with a logic analyzer than with an oscilloscope, however, I have build two handy boards successfully without any of these tools straight out of the box. Just be careful (...) (25 years ago, 20-Mar-00, to lugnet.robotics.handyboard)
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| | Required tools for assembly
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Can somebody please tell if it is absolutely necessary to have an oscilliscope for the assembly of and H board? If so, what are my INEXPENSIVE options/suppliers? What is a logic probe? is it a 5vdc test lamp? Can I get this kind of stuff at radio (...) (25 years ago, 20-Mar-00, to lugnet.robotics.handyboard)
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| | handy board troubles...
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Hi, A while ago I shorted out my handy board which caused the ram chip to fry. I've since replaced it, and the board boots again, but I am now seeing other strange behaviour. The batteries are connected and the board recieves power, but when I turn (...) (25 years ago, 20-Mar-00, to lugnet.robotics.handyboard)
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| | Expansion board problems
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Hi Finaaly got my exp board working and now yet another problem. When checking sensors, every 4 secs or so I always get 255.(when printing sensor value to screen would be like : 2,2,2,2,2,2,2,255,2,...,255,etc., i knew its not the sensor because (...) (25 years ago, 18-Mar-00, to lugnet.robotics.handyboard)
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| | Sonar
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Hi I use a Polaroid sonar ranging modul with the HB and the expansionboard. It all went well, but by mistake i put the digital in from J12 to a digital out. Since then i get the result -1 and the sonar isn't clicking. I've tried with another sonar (...) (25 years ago, 18-Mar-00, to lugnet.robotics.handyboard)
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| | Reset of handy board
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hi, may i ask how much current passing through HB will cause the HB reset ?? i have a big problem on my HB, I power one Polaorid 6500 sonar, 1 servo and 2 hacked servos by seperated 6V 1300mAh NiMH battery with common ground, and power 2 GP2D02 by (...) (25 years ago, 18-Mar-00, to lugnet.robotics.handyboard)
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| | IR emitters !
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Hi ! Can we connect two ir emitters to the HB IRout port (female connector J7) for left and right obstacle detection ? If so ! how do we distinguish between the left IR led and right IR led transmission since I'm planning to use only one Ir detector (...) (25 years ago, 18-Mar-00, to lugnet.robotics.handyboard)
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| | Re: sonar
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(...) I don't think it matters much. I used a 'lytic and it works fine. If you have another kind, it probably wouldn't hurt to give it a try. -- Will +---...---+ | ^^ <^ ^> | | / òó ó°° \ | | / =Y= U \ | | Wendy, Will, Tatoosh & Tenzing | (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | Re: sonar
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Just wondering... in reference to the modification on the Polaroid 6500 sonar ranging board, there's been two different assertions. Should the 0.1uF cap be of a polarized (e.g. electrolytic, tant, etc.) or non-polarized variety (as stated below)?... (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | Re: windows nt and handyboard
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Thanks for all of you that sent me e-mail regards your experience with hb and windows nt. They are a pretty useful information and i am considering them. lourdes (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | programming for step motor questions...
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Hi, I would like to use step motors in my robot and have had success using the MC3479 stepper motor IC, it is simple to use, just needs a direction bit and a pulse, but I really don't know how to program my hb to do this. I mean I can figure out how (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | Getting the L297 into wave drive mode
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Hi I'm using the L297/L298 chip configuration to run 4-phase unipolar stepper motors. Currently I'm driving them in half-step mode but I'm not getting enough torque.. :( Has anyone successfully gotten the L297 chip into wave drive mode? I believe I (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | Re: source for assembled expansion bds?
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I got my assembled & tested expansion board via air mail from Patrick Hui of the Robot Store, HK ((URL) fairly quickly, and at an excellent price. Im not affiliated with his company in any way, but I've always gotten prompt, courteous service from (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)
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| | Speed.asm problem...
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Hello, I am currently using speed.icb/shaft.c (IC v3.2 library files) to count clicks on optical encoders for my two drive wheels using the Pulse accumulator and the IC3 interrupt. I noticed that there was an inconsistency in the _unassembled_ (...) (25 years ago, 14-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Non-polaroid Sonar
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Hi Everyone! If anyone gets the interface to work, I'd love to post it on my site along with the appropriate references and credits. It would be neat if the sensor works with the HB! Good luck! (...) ______ ______ ---...--- |_ _| |_ _| Kam Leang | (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | HB sensors....HELP??
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Hi Finaaly got my exp board working and now yet another problem. When checking sensors every 4 secs or so I always get 255. Checking a light sensor on my bot is now impossible, trying to track a candle left and right every time I getr back 255 It (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | source for assembled expansion bds?
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Hi I need to purchase several (6) assembled expansion boards. I have tried contacting Gleason for several days via fax, phone, and email, but they are not responding. I need these items immediately. Could someone recommend a place where I might get (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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