 | | Line Sensor How-to
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Hello All! Anyone interested in a line sensor how-to for the HB? I've posted up a short article: (URL) fun. -kam (URL) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Mac Ic 2.8
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I run the commercial version of IC on a Mac color classic I got for $50. It works great and doesn't take up a lot of desk space. Plust there is a nice nostalgia factor. -Scott Harris (...) system (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Ic 2.8 system requirements?
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(...) Hi everybody, I have a little Mac Plus (68000!) which has got 1Mb of RAM and system 6.0.3 on it. Running only the Finder (no Multifinder!), I just discovered that I can run the INIT board and the IC applications with no trouble whatsoever. You (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Battery Charging Question
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(...) It is basically charged the same way and has all of the faults of he NiCd (voltage depression, etc.) but while it has a higher average capacity, it does not have as much current delivery (higher internal resistance.) The cells peak charge in a (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Battery Charging Question
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Hi, Yes, I read that too. But the pack was NiCd, mine is NiMH. According to some people, the charging methods between the two are different. I don't think I can charge NiMH pack like a NiCd pack (or can I??). -- Ray Aaron Dwyer (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | RE: Battery Charging Question
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Ray This is a post that Dennis Clark answered thoroughly for me just last week. By the way thanks for that Dennis, I think I forgot to before. (...) You will need some good equipment, or you will need lots of patience and a good DVM. Here are the (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Battery Charging Question
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Hi all, I was wondering if any battery expert can help me on this. A friend of mine gave me a NiMH battery pack for my HB expansion board AUX power supply. It is rated 6V, 3 AH (yeah, he gave me the spec.) but there is no charger. I know charging (...) (27 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Ic 2.8 system requirements?
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(...) Try this page. Surprisingly, it's on the Handy Board web site! I used to run this software on a Mac IIfx. Gary Livick Tiny HC11 products for your robot (URL) (27 years ago, 29-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Ic 2.8 system requirements?
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gads -- i think you can go with a 68030 mac and system 6.0.8. fred In your message you said: (...) stem (...) (27 years ago, 29-Mar-00, to lugnet.robotics.handyboard)
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| | Ic 2.8 system requirements?
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Hi Im currently using IC 2.8 and was wondering what its minimum system requirements are?(ram, speed,processor,system etc.) By the way Im a mac user so Is there acopy out there for a 68k mac? Thanx in advance and for quick responses? -Alex Ps- (...) (27 years ago, 29-Mar-00, to lugnet.robotics.handyboard)
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| | Using IC2/3 inputs w/interrupts in ASM?
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One of my students wants to use the IC2/3 lines for a function on his LEGO robot. He needs to write an ISR for this particular line. I've done this many times with the 6811 under the BUFFALO monitor, but I don't know the "side effects" likely if we (...) (27 years ago, 28-Mar-00, to lugnet.robotics.handyboard)
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| | How to hack the sonar module from a Polaroid 3500 Camera
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Anyone know how to hack the sonar module out of a Polaroid Sonar 3500 camera? Or got any good links? Thanks, Bill Denzel (27 years ago, 28-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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Oups, I thought this message was lost - Sorry about this (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Rebuilding Pcoder
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Hi, has anybody ever manage to rebuild a pcoder, using Kent Farnsworth's routines? I just tried, but I am usure about the compiler switches. Next to the startbutton I found the remark "rev. 1.2A", Kent just mentioned REV2 or REV 2.1 board. (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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(...) Just try printf("\n %f",4.1/4.1); and see the surprising result with the free version (2.). You should be really careful, when using floating point operations, 'cause there seem to be loads of these errors. I am not sure, if this problem is (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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(...) Actually I am using the free version, but you have to be very careful, if you need reliable floating point operations. For example try printf("\n%f",4.1/4.1); and have a look at the surprising result (2.). This is just an example, there loads (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: A few questions.
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Hi Todd, I'll answer the best I can. (...) As long as the relay doesn't require more current than the motor driver chip can handle. You can always bridge the motor outputs together for higher current. The motor chip has the built in diode, so you (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | (canceled)
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| | Re: A few questions.
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(...) I don't know about the other questions, but with Interactive C if you write a function called main it will be executed on power up. This just uses the reset interrupt, which can be set manually if you're using a different compiler/assembler; (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | A few questions.
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Can the motor outputs be used to close a relay instead of running a motor? As an example to control a motor that needs 120v AC? As far as the inputs go, are the digital inputs for switch type sensors (high or low value only), and the analog inputs (...) (27 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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The hardware is limited to 31.5' (~ 10 meters). The limitation is on the design of the receive amplifier's gain module (and noise floor). Generally scaling this to an integer of 32767 results in a precision of just over 1 tenth of an inch (or 1/3 (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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(...) Martin, I noticed a similar result as well. Maybe someone else can say for sure, but I seem to remember that there may be a way to slow down your interrupt counter, so that it won't overflow (a timer setup register). I don't have my 'HC11 book (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: sonar mapping with evidence grid
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(...) Yep, about 30 degrees. There's a pretty good article about how to deal with it on the Seattle Robotics Society web site: (URL) it out before somebody decides to delete it! One thing they don't really discuss in the article is how much extra (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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(...) That sounds correct. Someone else asked about that last year. Try searching the mailing list archives. The problem is not just that the result is an integer, but that it's a signed integer. You effectively only get 15 bits of information out (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Sonar
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Hi I've a Polaroid Sonar Ranging Modul. The longest distance I can mesaure is about 2,7 meters. In my opinion it's not the hardware, but as the result is an integer, so it can't be greater than 32768. Right? Has anybody developed another programm, (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | sonar mapping with evidence grid
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Hi, I have connected sonar to my HB and it is time to analyse the data. Is it true that the sonar range reading is in a cone shape at 30 deg. and not at point form ? I just can't find any information from the Polaroid home page. Is anyone there (...) (27 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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Ive used the serial routines on the Hb site with moderate success. You can send data byte by byte along the line through the interface board and back to your serial port. A simple way to test the incoming data is to run a terminal program on the (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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(...) I've done this. Kind of. I hooked up a Handyboard to listen to a GPS, and to send commands and data to a terminal node controller (an amateur radio modem) to send my position out over the radio. In order to do this, I told Interactive-C to (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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Here is a RS232 com driver that you can use to send serial data to other devices. It's on the Handy Board Site. (URL) is more info similar to the above, also from the Handy Board site: (URL) there is the attached from George Musser's Advanced (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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The commercial version of IC offers the ability to declare multidimesional arrarys (with freeware, you only can use single dimensiond arrays), commercial IC allows #includes, and the user interface is somewhat more robust, making debugging more (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Handyboard Upload
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Has anyone out there ever uploaded data collected by the Handyboard back to the PC? I need to get some distances measured by our sonar sensors back up to the PC for use in another application. If you can help me, I'd really apprieciate it. (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard in mix with SSC II Servo Controller
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Hi again, Don't be confused la. I think you had made a little mistake. In order to interface SSC with HB, the serial connection is not by the telephone line. The connections is done by connecting the serial data pin on the SSC. Remind you that it is (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | InterActive C 3.2 or Interactive C 2.8 freeware
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Hello Handyboard users and helpers, We are a group of new Handyboard users from Denmark. We are building a non commercial autonomus mobile robot (Programmed via PC)for a competition at a university. We need to know wether we can do with the (...) (27 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard in mix with SSC II Servo Controller
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Hi! I've tried connecting the SSC II to the handyboard through a telephone wire (and when that didn't work) through the configurating header at the upper right corner of the SSC II circuit board. I've downloaded the proper library to the handyboard (...) (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | dead hb - alive again
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hello. seems my dead handyboard problem of yesterday was a result of a bad adapter, not the board itself. a relief. thanks, claudia (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard in mix with SSC II Servo Controller
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Hi, There are several steps you should follow. 1..Download the 9600 serial driver form (URL) you that if you use SSC controllers, download the inverted version. 2...Refer to you SSC manual, connect the serial in pin to PA7 of handyboard, PA7 is the (...) (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | dead hb - overpowered?
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hello. i used the wrong dc adapter (15v) to power my hb today. i made the switch to the proper adapter (12v) fairly quickly, and things seemed fine - i was able to download the pcode. but when i rebooted the board, the power died and i've not been (...) (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | Re: resistor pull-up help!
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basically, yes. the inputs from the expansion board feed into the inputs on the main board. if you need a high impedance input, your best bet is to cut a trace on the main board and use one of those inputs. the exp bd takes over main board inputs 0 (...) (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | RE: resistor pull-up help!
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Hi, Are the general-purpose analog inputs in the exp board also connected to the pull-up in the HB main? To use that kind of sensors the only way is to cut the trace in the HB, no matter I have or no the ExpBoard? Thanks Jose Luis --- Original (...) (27 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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| | 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 (...) (27 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? (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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! (27 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: (...) (27 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 (...) (27 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? (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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: (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 | (...) (27 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)?... (...) (27 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 (27 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 (...) (27 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 (...) (27 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 (...) (27 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_ (...) (27 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 | (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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? (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (27 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 (...) (27 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 (...) (27 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 (...) (27 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 (...) (27 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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