 | | Re: Required tools for assembly
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I have a really nice, and very expensive (somebody gave it to me), Tech 2432A dual trace scope with storage. I have also built about 20 boards of various kinds, some of my own design. The scope has lots of dust on it, although it looks great on the (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Handyboard in mix with SSC II Servo Controller
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Hi, We are trying to conntect Handyboard to SSC II Mini Servo Controller so we can control more servo motors. Can anyone tell us how to connect these two pieces and work them together? Also, where is the serial output of the Handyboard, and ground? (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: recharging battery
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(...) You will need some good equipment, or you will need lots of patience and a good DVM. Here are the steps to rejuvinating old NiCds IF they can be recovered. If they have suffered the effects of overcharging (common) then they may not be (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Interfaced your Sonar with HB
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Hi Everyone! It looks like Frankie Lai has found a way to interface the sonar I have on my site to the HB. Here are his comments: (...) hihi, me again......I think you know already, but I would like to precise it. The echo line through NOT gate is (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Pull-up resistors
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I would like to attach a LM34 to my miniboard. In testing the LM34 at a room temperature of 60F, the device gives me a reading of .6V. The docs say that every 10mv=1F, so it seems to be working correctly. When I attach it to one of the analog ports (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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great, that's excellent! the key trick was pulling all the socketed chips. it's a weird but true fact that chips that don't have valid logic supplies can draw power in from their inputs pins (when the inputs are high) and operate off of that leeched (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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(...) I traced the lack of power to a dead wire between C5 and pin 28 of U14; soldering a small piece of wire between these connections fixed it. Thanks, everything works perfectly now! (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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that's possible, it's easy enough to test (just check continuity across F1). more likely that U14 croaked. is there batt pwr on its input side. f. In your message you said: (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | recharging battery
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hi all i have come across some old batteries and want to know the best way to charge them. the batteries are from mobile radios. motorola. 7.5V. 1200mAh. Nickel-Cadmium. can someone enlighten me on the best method to rejuvenate and charge these type (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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(...) Yes, that was indeed the problem. Upon removing all the ICs, the power to U14 disappeared. What could cause this, a blown fuse at F1? (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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| | Re: servo ports on Exp board...help?
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Hi again, I should have mentioned this in the first message. In our case, the motor that was causing the problems was a fan motor (to blow out a candle) and it was completely electrically isolated from all of the other circuitry. It had its' own (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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re: this problem with the memory contents not persisting, check the separate power supply to the RAM (U14). you might need to remove all socketed ICs from the board 'cause power can bleed to chips via input pins. also check that U12 the DS1233 is (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: servo ports on Exp board...help?
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Hi, We saw this exact problem last year. Our servos went so crazy that they actually destroyed their gears and had to be scrapped. The fix is simple, solder a capacitor across the motor leads. The motor causes noise on the lines which the servo (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | (canceled)
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| | servo ports on Exp board...help?
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Hi the servo ports on my expboard seem to work fine, but when the servos are'nt active ( init_expbd_servos(0); ) and a motor is turned on the ports go crazy , servos will turn eratically, with hacked servos they just move in one direction. Would a (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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(...) Sorry about this, I meant 32K. John (...) completely (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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(...) Yes! I apologize, I meant "..._without_ the RJ11 cord connected..." Is it possible a surge could have fried the RAM and now it won't hold memory? That was my contention, but I'm not sure... John p.s. RAM replacement question: Will any 64K CMOS (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Acroname robotics...
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(...) Acroname certainly seems to be the best source for the GP2D12 and Polaroid sonar. (...) I'm a fool, too. That's why I went with the fully assembled & tested Handy Board from Patrick Hui. The only things I had to add were the NiCd battery and (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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(...) ^^^^ Do you mean without? That's my problem; the board only holds its data if the cord is plugged in. (...) I've also got a servo which I can't figure out how to drive from the exp. board, but the problem of the RAM discharging happens even (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | Acroname robotics...
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I am looking to buy a Handy Board, Expansion Board, motors, GP2D12 sensors, Polaroid 6500 instrument package, and maybe the Eltec sensor. I will likely use Acroname, as they appear to have pretty good prices and I can save a few $$ on shipping. Has (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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| | 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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| | Re: Vector 2X driver
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I just bought a Vector 2X electronic compass for a project. In looking at it the manual, I see that if the 2X is run in slave mode I can clock out data from it at my leisure using any digital pins available on the Handy Board. This could almost be (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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no i disagree with this answer. the HB is designed to be left on normal charge indefinitely. the batts can get a little warm. if they are hot then something is wrong, but a little warm is nothing to worry about. when fully charged and with no load (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Non-polaroid Sonar
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In the sonar code from the web site, the rising edge detection on timer input channel 3 (TIC3) is set like this: bit_clear( 0x1021, 2 ); bit_set( 0x1021, 1 ); According to the little pink book, address 0x1021 is the Timer Control Register 2 (TCTL2) (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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(...) Ouch. You don't want to do that too much or you will torch (may have torched) your NiCds. NiCds do NOT like to be overcharged, it causes a problem called Voltage depression that many mistakenly call "memory effect". [snip] (...) Servos will (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Overcharged battery?
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actually this is to be expected. with no load, the diodes produce no drop. if you're worried, try hooking a DC motor (or other real load -- light bulb, 10 ohm resistor, etc). across the servo motor supply and then measure the voltage. you should see (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Overcharged battery?
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I've got a pre-assembled Gleason Research HB with expansion board, and have a couple questions. We've left it plugged in (on normal charge mode) for a week or so. I started to look at the specs to hook up a Futaba servo (6V), and found that with no (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Non-polaroid Sonar
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Greetings all, I've just finished building Kam Leang's sonar circuit as published on his web site, and it all seems to be working well. I am having a problem interfacing it to the handyboard however. I'm not entirely sure how to set bits high and (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Another assembly question
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the fact that the two LEDs come on and then go off suggests that you *are* successfully putting the hc11 into download mode. it also happens that the hc11 TxD pin is in what's called "wired OR mode" during bootstrap. this means that it can only (...) (25 years ago, 14-Mar-00, to lugnet.robotics.handyboard)
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| | Another assembly question
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I'm also at the point of trying to download to my partially assembled board for the first time. I'm able to put the board in to download mode (both led's come on for a short period of time then go off). When I start downloading the green led on the (...) (25 years ago, 14-Mar-00, to lugnet.robotics.handyboard)
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| | Servo Motor
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Hi I need to know how to use the servo motor controller pins on the expansion board to control a servo motor urgently. Can anyone kindly teac me? Thank you very much. KCR OEI (25 years ago, 14-Mar-00, to lugnet.robotics.handyboard)
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| | need help with HB batteries
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Hi all, I have some problems about selecting batteries for HB hope you can help me.. I am building a mobile robot which contained 12 GP1u58x IR, 2 GP2d02 IR, 1 Polaroid Ultrasonic sonar and 2 hacked servos (seperate 6V supply), what kind of (...) (25 years ago, 13-Mar-00, to lugnet.robotics.handyboard)
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| | Re: ICB files
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(...) You can get a MS-DOS / Windows-Version at: (URL) you find a useful Linux-version, please let me know. Dirk ---...--- Dirk Stueker Zietenstr. 36 26131 Oldenburg Germany Department of Computer Science University of Oldenburg Tel. & Fax: +49 / (...) (25 years ago, 13-Mar-00, to lugnet.robotics.handyboard)
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| | ICB files
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Anyone know where I could fine the AS11_IC.bat file? I need to do some assembly subroutines... (25 years ago, 12-Mar-00, to lugnet.robotics.handyboard)
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| | Re:Expansion Board Problems Solved!!!
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Haya Me again, After spending 2 and a half ours of probing, there was a bead of solder about the size of a hair and 3mm long bridgeing one of the multiplexeers pins to a pass through which was very close to it. After snapping the bead off, ureka! (...) (25 years ago, 11-Mar-00, to lugnet.robotics.handyboard)
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| | Expansion board problems
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Hi, Just finished my exp board, checked over all connections twice and looked for shorts, installed it, turned on the board and attempted to download the exp libs. Wellll when I turnned the board on to start downloading the LCD was just squares (...) (25 years ago, 11-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Any interest in spare 6.270 board parts?
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(...) I've had a number of replies to this, so thanks for your interest. If I'm unable to find a home for the parts, I'll post here again. -Tim (25 years ago, 11-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Hexapod servo supply
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I had a very similar problem with my robot. When the servos are under high load (ie holding up your robot) and you try to move them all at once, the current drawn is quite large. I never actually measured how large, but large enough to destroy a 1A (...) (25 years ago, 11-Mar-00, to lugnet.robotics.handyboard)
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| | Re: IR Sony Input?
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(...) The drivers and instructions for the Sony IR capability can be found on the official HB web site. I think it's in the Software Contributed section. -- Will (25 years ago, 11-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Expansion Board problems
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You have a short circuit somewhere. The first thing to check is to make sure you have the capacitors in the right way. Some of them are polarized, and if you put them in backwards, they sometimes short out, and sometimes they blow up. The next thing (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | IR Sony Input?
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Handy Board Users, Thank you for your response a couple of weeks ago concerning the Reference Voltage on the Handy Board A/D converter. I ended up scaling the output of my thermistor as you suggested. I do however have another problem. I am (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Expansion Board problems
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Hi, Just finished my exp board, checked over all connections twice and looked for shorts, installed it, turned on the board and attempted to download the exp libs. Wellll when I truned the board on the LCD was just squares across the top, but the (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Hexapod servo supply
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Hi all, I am now building a hexapod robot. There is something wrong on the servos preformances. Actually, my robot weights 1.6kg, and by calculations my servos can support up to 2.5kg with normal operations. But when I connected the 6v dc supply for (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Any interest in spare 6.270 board parts?
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Some years back, I got a set of "hard to find" electronics parts for the 6.270 board (from PK Oberoi, for those who might know who that is). I never got around to building the boards, and I'm doing my robotics stuff with the RCX. So, I thought (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar Assembly
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(...) Yup. Works great. However, you may want to use the attached version of the sonar sampling code in place of the code found on the HB web site. The only real difference is that this version takes three readings in rapid succession and then (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Sonar Assembly
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We're looking into buying a sonar ranging module from Acroname for use in our lab. Does anyone reccomend a particular offering of theirs? If we buy this unit: (URL) we will have to do to connect it to the HandyBoard are the wiring steps laid out on (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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| | Re: HandyBoard Assembly
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Eric, The pcode does load, or otherwise the beeper would not beep with the board reset. But you cannot communicate with your PC, which seems to be a very common problem with the newer and faster PC's. If you are using the freeware version of IC, try (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Re: GP2D02/GP2D12 w/o expansion board
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When using the GP2D02, you are using port A, pin 5 and port A, pin 0. That's where the PA0 and PA5 terminology comes from. I wrote that particular piece on the Acroname website, so I apologize for not being more clear. And yes, it is necessary to (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Re: sound generators
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Of course, the Handy Board has a piezo speaker built in. With the beeper and tone functions provided by IC, you can make all sorts of sound effects. You can make your robot sound like R2-D2 if you like. Also, Radio Shack sells piezo speakers. -- (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | RE: sound generators
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The Handyboard has one on it. Therfore, if you look in the manual's part's list, it should list where it's from. (...) This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Re: HandyBoard Assembly
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it seems like the HB is not able to talk back to your PC. make sure the TxD signal starting from the 'hc11 is leaving the HB properly at the RJ11, reaching the interface bd, and then being cvt'ed to -10v to +10v levels out the interface bd on its (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Re: GP2D02/GP2D12 w/o expansion board
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(...) Why does it make the ports useless for other sensors? If you need a pullup-resistor, you can still solder a 47k resistor directly to your sensor-connector between Vcc and Sensor in. Thus in my opinion the HB can be used more flexible without (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | HandyBoard Assembly
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I recently finished collecting all the parts for the handyboard and started assembly. I went all the way through the i/c board setup without a hitch. But when I got to assembling the serial comm circuit a few things went wrong. I assembled the (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Re: light sensors
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(...) among the easiest of all light sensors to interface to the Handy Board and the interface itself is pretty much straightforward. All it is a a variable I've tried a pack I picked up at Radio Shack and they worked easy enough. However, the ones (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | sound generators
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hi, Does anyone have a good idea about sound generating source. We are thinking of using Piezo transducers but don't know where to get them. This is for our product design course where we are designing a singnal indicator for an antenna. We would (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | transponder ?
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Anyone knows where to buy a V-SCOPE transponder for accurate positioning of HB robot or atleast where to get its datasheet so that I can find whether it can be supported by the HB. thanx, Sunil. (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | RE: light sensors
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Hope this will help. Have you consider using Cds(Cadmium Sulfide) cells from Radio Shack? They are among the easiest of all light sensors to interface to the Handy Board and the interface itself is pretty much straightforward. All it is a a variable (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | GP2D02/GP2D12 w/o expansion board
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From (URL) : "This example assumes that port PA5 on the Handy Board was connected to the input of the GP2D02 detector and that port PA0 on the Handy Board was connected to the output of the GP2D02 detector." What do PA0 and PA5 refer to? And when (...) (25 years ago, 8-Mar-00, to lugnet.robotics.handyboard)
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| | Can I use this light sensor?
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I don't know a lot of electronics, but have been tasked with figuring out which electronic components to purchase for a class which is going to use HandyBoards. I've been thinking of purchasing many of one particular infrared detector and using it (...) (25 years ago, 8-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Can I interface the Handy board to a PC to run there the robot's brain?
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(...) There are many applications where Interactive C won't work, some involving lack of memory, and some involving speed of execution. I ended up needing to switch compilers for both reasons, but mostly because of the speed. I do a lot of (...) (25 years ago, 8-Mar-00, to lugnet.robotics.handyboard)
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