 | | Motor Drivers
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I am trying to run a light with the motor outputs on the handy board. I looked up the spec on the L293D and it claims to be capable of 600mA constant and 1.2A peak. The miniature light I am using draws about 300mA. When the light comes on the handy (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: sonar mapping with evidence grid
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(...) home (...) I have read that it is not actually a solid cone angle, but a peak central lobe and a few side lobes. I think the best way to figure this out is to mount your sonar sensor on a rotatable head and go out to an open field. Place a (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Re: LED's
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[Derek Healy] spake unto the ether: (...) This is just an idea skeleton, but not too hard to flesh out, if you've worked with TTL. The Handy Board memory map maps some upper 32K addresses to I/O "ports". Look at the schematic and you can see which (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | LED's
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Hi, could anyone tell me how I might light LED's in sequence so that they would simulate a rev counter of an automobile & to also simulate the speed counter. I need to know how I might wire them up and how I might be able to program them using time (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Losing HB memeory
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Hi all, i am having some trouble with the HB memory. i have some calioberated values stored as persistent globals. after running the program few times the HB tends to lose the stored values. What could be the problem? Many thanks Fazal (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Diodes for Sonar Assembly
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yes, this is fine. the 5404s have a higher voltage rating, so they're "better". the 5401's are specified because they'd be cheaper and are already more than adequate. fred In your message you said: (...) I (...) e (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Diodes for Sonar Assembly
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On the official plans on the HB web site, it says to connect 6 1N5401 diodes for a voltage drop. Can I use 1N5404s instead? We got our sonar module the other day and are itching to try it out. After visiting various Radio Shacks I couldn't find the (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: IR decode disabling
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I came across the same line in the lib_hb.c-file, hoping to achieve more performance but as I was told by Fred Martin, the default setting is OFF. Dirk (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: sharp gp2d12 infrared ranging sensors (fwd)
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A little known fact is that this does NOT work on inputs 3, or 6. Cutting the leads on 1,2,4, or 5 works just fine. If you cut the traces on 3, or 6, simply put a solder bridge across the signal and 5V leads to put things back to normal. If you run (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Gleason Research
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Dear Joe Kopena: We are here and are sorry you have found any difficulty in getting a prompt response. We have no record of having received email from you yourself. We have recently faxed a quote to another party at Drexel. Perhaps your email was (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: sharp gp2d12 infrared ranging sensors (fwd)
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hi has anyone successfully used these with the handyboard? i know that we have to cut the lead from the 47k pull down resistor for the sensors to work, but once doing that (we confirmed that it was cut through an ohmmeter) it still doesn't read (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Gleason Research
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We haven't been able to get into contact with Gleason, they're not answering our eMails. Has anyone else had a problem? (24 years ago, 3-Apr-00, to lugnet.robotics.handyboard)
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| | array sizes
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Hi Does anyone know whether the array sizes in ic are limited in any way other than the physical memory constraints? thanks Ross (24 years ago, 3-Apr-00, to lugnet.robotics.handyboard)
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| | IR decode disabling
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Hi everybody, I try to disable the IR decoding, as it is written in lib_hb.c that it take 11% of CPU time, and that it is default ON. So I add the line at begin of main : bit_clear(0x39, 0b00000010); to disable it. I noticed no improvement, but when (...) (24 years ago, 3-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Non-volatile memory storage?
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(...) Hi, Brad, You may use one non-volatile memory to subsitute HY62256 directly. Our company has 32k non-volatile ram AS62256. Ellen Grandar Co. Shanghai, P.R.China (...) (24 years ago, 3-Apr-00, to lugnet.robotics.handyboard)
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| | RE: Non-volatile memory storage?
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Brad, I know in the Mobile robots book they used a Ram chip that had a built in battery back up, whether this would work in the Handyboard (Possible opposing voltage problem), or indeed where you'd get it from. Matt (...) (24 years ago, 2-Apr-00, to lugnet.robotics.handyboard)
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| | Non-volatile memory storage?
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Anybody know a way to store code in the non-volatile memory of the handy-board? If the board is not battery backed by the 12V pack I lose all memory in RAM. Thanks guys. P.S. I am also looking for a timing routine, a way to have a program run for a (...) (24 years ago, 1-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Question about uP's
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(...) I'm using an E9 part in a couple of Handyboards. When you set up the CONFIG register (I think most of the downloaders do this for you), you end up disabling the internal ROM and then it looks like an A1 part or so. Works great for me. I think (...) (24 years ago, 1-Apr-00, to lugnet.robotics.handyboard)
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| | ADXL202 use with HB?
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On Slashdot ( (URL) ) there is an article (URL) ) that talks about a tilt sensor/accelereometer that was connected to a Palm Pilot for gaming purposes. The ADXL202 (URL) ), from Analog Devices, seems to be a perfect sensor for a Handy Board based (...) (24 years ago, 31-Mar-00, to lugnet.robotics.handyboard)
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| | selling my handyboard and misc
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Hi, I'm selling a fully assembled handyboard(incl. adapter,nicad, and case) since it no longer meets the specs for my new projects and need some cash to help purcahse new parts. It is about a couple years old but still in great condition. Also I (...) (25 years ago, 31-Mar-00, to lugnet.robotics.handyboard)
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| | Programming Problem
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Hi everybody, I have a software problem hope any expert can help me.. thanks.. I'm using IC ver. 3.2 for my project, when I run the main() program, it said I have not enough stack space. One of my sub-function program also have the same condition (...) (25 years ago, 30-Mar-00, to lugnet.robotics.handyboard)
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| | 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) (25 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 (...) (25 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 (...) (25 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 (...) (25 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 (...) (25 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 (...) (25 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 (...) (25 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) (25 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 (...) (25 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- (...) (25 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 (...) (25 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 (25 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 (25 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. (...) (25 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 (...) (25 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 (...) (25 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 (...) (25 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; (...) (25 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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