 | | 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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| | Re: Non-polaroid Sonar
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Hi all, I'm now building the ultrasonic sensor from kam leang's page, did anyone interface it with handyboard?? Can anyone give me some advice on driving it? thanks Frankie Lai 97139371d@polyu.edu.hk (...) to bit_set and bit_clear is not actually (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Non-polaroid Sonar
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(...) No, that's a very good question. It had me confused, too. The second argument to bit_set and bit_clear is not actually the index of a bit at all; it's a bit mask. For example, when you do bit_set( 0x1021, 3 ), the 3 becomes 0000 0011 in (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Polaroid setup w/ exp board...
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John Wynne wrote: <snip> (...) Making the connection to the transducer by hand will very likely damage the electronics on the sonar module board. It says in the Polaroid instructions never to operate the sonar with the transducer disconnected. You (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharge Battery
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(...) Actually, if you had stored them fully discharged then they would likely be as good as they day you bought them. That is the best way to store NiCds. However, if they are kept at a C/100 trickle charge to prevent open-circuit discharge, they (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Vector 2X driver
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Yes, I run my Vector 2X is slave mode using only IC. I don't worry about missing the last bit since the precision of the heading is only +- 2 deg. It's very simple to code up. -Scott (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Non-polaroid Sonar
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Thanks for your help :-D Just so I'm clear, ref pink book page 10-17. Does the "bit_set( 0x1021, 1 );" refer to bit 0 -EDG3B, and bit_clear( 0x1021, 2 ); " refer to bit 1 -EDG3A. This is what was throwing me, I always thought bits started at zero (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: windows nt and handyboard
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I am also using the icwin from newton labs and that works fine also. Although I have not tried it under win2k, which I must do soon. --peter (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharge Battery
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Im going to jump in here on this one and give an opinion. C/10 for a NiCd is a little much for a trickle charge. C/10 on NiCd's is usually considered more of a trimming type of charge following a higher charge rate of C or C/2 to put the bulk of the (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: windows nt and handyboard
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(...) Actually I am working with Linux, but I gave it a try and it worked just fine. I tested with MS Windows NT Workstation 4.0 Service Pack 5. Just open a command prompt and use this ic-version. (URL) There is no admin-account needed. Perhaps you (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Polaroid setup w/ exp board...
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Hello, I am trying to setup the 6500 polaroid sonar package, but am having a little difficulty. I've soldered a .1uF cap (electrolytic) into the C7 space on the ranging board, connected a 22g wire from J12 to input 7, etc., etc. My problem is in (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | windows nt and handyboard
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Hi, Please, someone that is working with the handyboard and windows nt can tell me if do you have any problem in communicating the serial port with the handyboard? Do you think that the handyboard could be connected by serial port with windows nt? (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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(...) OK, this is good to know. (...) Yes, *if* more drop is necessary, more rectifier diodes would be called for (i.e. relatively fixed voltage drop), not a series resistor (v=iR). (...) I didn't have any 5watt resistors handy, so I put a pretty (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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(...) Hi Fred, I don't claim to be an expert on these, but what I have read leads me to believe that this may damage the cells if left on too long. For common NiCds (800mah AA' for instance) C/10 should really be considered a fast charge and not a (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: problem with sonar
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A 470 microfarad electrolytic capacitor across the power leads to the sonar board will probably fix your problem. You can get a lot of current really fast out of one of those things. I remember charging them up and tossing them to one of my friends (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | problem with sonar
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Hi.. I have a problem with ultrasonic sonar power supply, hope anyone can help me.. thanks.. I run my sonar well with the exp. board using transformer, but i failed to run it together with 2 sharp GP2D02 IR, i think may due to 2.5A surge of the (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Hitachi LM052-L
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Jan, Do you have the expansion board? If so, have you tried removing it and seeing if the display works on the Handy Board by itself? What makes you think the display is damaged? What are the symptoms? Does IC still work, even though the display is (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Hitachi LM052-L
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Hello, my Hitachi LM052-L display is damaged. Does anybody know where to buy a new one or equivalent in Europe ? Or how to test which part is damaged of the handyboard display system or the display itself ? Thank You ! Jan Luijk Netherlands (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Q: 10 dc motors on handyboard?
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Does anyone know if handyboard can run more than four dc-motors? I want to be able to control a complex lego construction, with full control of all motors at once. The current flow shouldn't be to dramatic, I hope. I would also like to ask how it is (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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hi dennis, well, it's just a plain C/10 charge circuit. but i was under the impression that nicad's aren't damaged by that. it's possible i'm wrong :-). any other battery experts out there? fred In your message you said: (...) ly (...) ut (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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(...) I was guessing here - most chargers don't check for peak charge, since I didn't know if the Handiboard charger did or didn't... If the charger has a trickle charge of more than C/50 or C/100 then NiCds will be damaged eventually on a long-term (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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