 | | Vector 2x compass
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I'm still having problems with the Vector 2x compass. I tried resetting the compass as Tom Brusehaver instructed and I spent some time going over the schematic. It still doesn't work and I don't see any obvious problems. I will have access to an (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | Penn State FF robots
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Hi All, The Penn State Abington College (Abington, PA) entered 12 robots in the Trinity College Fire-fighting robot contest this April. The students were freshman and sophomore engineers involved in my mobile robotics course -- the contest was (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | Polaroid software driver
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1) Doesn't using motor driver chip pins 1 and 9 disable correct operation of that motor chip. That is, when you poke to those outputs, doesn't that effect the motor outputs of that chip? 2) Aside from the difficulties involved in writing assembly (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | zip archive of trincoll robot pix available
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good suggestion. i've put a link to a ZIP of all the pix at the pix page, (URL) 3.9 MB. kinda big, but oh well. this should also help re: the two messages i saw re: netscape not being able to load the pictures. i don't know what's wrong, the pix are (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: Photos: Is that you, Fred?
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Hi Fred, I have an idea! I was wondering if it would be too much trouble to zip all the pictures up into one file so some of us can ftp it. This way, all who want to see all of them at once instead of downloading each with slow modems can do it this (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | RE: GPS Sample Code
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(...) I am using a Garmin GPS-35PC. This thing looks like a computer mouse without the buttons. It is a 12-channel parallel unit, but has no display or keyboard. The only connections are 12VDC from a cigarette lighter plug and a DE-9 connector for (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: Photos: Is that you, Fred?
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(...) Whoa, Fred! I pull up that picture, your face appears, and my machine immediately reboots. What power! I don't understand it, I didn't think you looked that bad. :-) * Michael L. Ross/C33 | Lockheed Martin Eng & Sci Svcs Co. **** * Robotics (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: my fire-fighting robot
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(...) they are stock lego parts. you snap them together to make any length. call 800 527 8339 and ask for the lego technic catalog. -fred (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: my fire-fighting robot
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Hi Fred, I saw your LEGO robot picture that you put up. I am interrested on track threads on the robot. Could you tell how to get a hand on ones ? I do no think they are LEGO parts, are they ? They seem to be quite long as well. Thank you, -Pandit (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: Photos: Is that you, Fred?
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(...) OK, find me at (URL) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Photos: Is that you, Fred?
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Fred, Please could you tell me which one of the people in the photos is yourself? It's nice to have a face to think of when reading mails from people! Maybe some of you other "regular" supporters could tell us who you are? Richard (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x Compass??
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Greetings, I recently acquired a Vector 2x Compass from Jameco, a mail-order electronics supplier, for US$ 49.9x ((URL) A.A. de Oliveira assfalk@eece.unm.edu ---...--- Research Asst. et PhD student UNM EECE ACE Center (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: Trinty Firefighting
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(...) I used IR phototransistors. I picked them up at a local electronics surplus. They may have been mediocre in sensitivity as they could only respond to flame a couple of feet away. Putting a magnifying lens in front made a drastic difference, (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | my fire-fighting robot
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if anyone is interested, the robot entered by my team (steve ocko, brian silverman, and myself) is pictured at (URL) did the lego design, we all came up with the overall strategy, and i did the programming this year. it's really a two-year design; (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | how to see the flame
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some people use fancy sensor devices, but i have found that a simple CdS photocell or a phototransistor, with some kind of shielding tube to block ambient light, works quite well for seeing the candle flame. check out the pix -- lots of robots have (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: PCB for Handy Board
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I think Douglas Electronics sells it. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Vector 2x Compass??
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Is this the product's name? I am looking for buying a compass to hook up to the HB and I have seen this name many times on the list, but I don't recall seeing where I can find them... THanks in advance for any help, Yoni Garbourg << To succeed, (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Re: PCB for Handy Board
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Hi Don, I believe I have seen a pointer to a vendor that sells PCB for HBs from handy board web page under getting a hand on a HB. -Pandit ---...--- (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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| | Trinity Firefighting contest info needed...
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At the Trinity Firefighting contest, what seemed to be the best method for detecting the flame? I am planning on entering next year and I am starting to get my design together. was thinking of using a phototransistor with a filter over it so that it (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | GPS Sample Code
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Here is code I have used to talk between a GPS and a HandyBoard. I clipped these routines out of an old version of the code I currently use, so I can't verify that there aren't any bugs in this stuff, but it is simple code. Several people on the (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Trinity College and Peace Dale Robotic Park photo's on-line
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Greetings all, We took a bunch of photographs at the April 1997 Trinity College Fire-Fighting Robot Contest and Rhode Island School of the Future Robotics Park Exhibition (whew!). The pictures are now on-line at (URL) not organized yet, except into (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | PCB for Handy Board
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Hi all. I'm interested in building a handy board but I haven't seen anything on how to get the PCB. Would it be easier to order a kit with all the parts or should I buy all the parts on the parts list and buy the PCB seperately? Any suggestions (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Re: problem in Program
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(...) Oops... Thank you Tom. Terry King. Terry.King@fmr.com (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Re: Problem in program
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K> to running the printf right after "while (digital (15))". Try K> this: K> while (digital (15)) K> bk(2); K> printf ("Left object detected\n"); I think you want this to read: while (digital (15)) { bk(2); printf ("Left object detected\n"); } K> (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Re: Problem in program
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(...) Terry, Don't feel bad, I'm in the same boat on writing that code. But, thanks to everyone's help, I've been learning. Chris Hackett and Pandit Panburana had a good tip on fixing the problem with getting the printf message to LCD consistently. (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | The HB is alive!
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Hooray, my HandyBoard works! My kit from DMSC came in on Friday, and I (a very non-hardware guy) managed to assemble it, thanks to Fred Martin's handy assembly guide. I did run into trouble during step 4.4.2 and 4.4.3 (testing/debugging 'serial line (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x almost working...
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(...) J> Heres the latest: I am having problems interfacing the Vector 2x J> electronic compass with the Handy Board. I have successfully J> loaded Tom Brusehaver's program and it does write to the HB LCD J> but the compass position always reads 0. (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Re: Accessing 2nd line of display
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(...) I think I read somewhere that the display is treated as one 32 character line instead of two 16 character lines. (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Vector 2x almost working...
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Thanks to everyone's responses on the first question I posted last week. I almost have it working. :) Heres the latest: I am having problems interfacing the Vector 2x electronic compass with the Handy Board. I have successfully loaded Tom (...) (27 years ago, 12-May-97, to lugnet.robotics.handyboard)
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| | Board Synchronization Error
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Hello all, I am using Interactive C version 3.1 from Newton Research Labs running under Win95. When I try to download code to my HB I will often get the following error: C> load C:\HandyBoard\Intera...bs\hello.c Loading (...) (27 years ago, 11-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x Problems...
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(...) see the ICB linefeed caveat in the FAQ (URL) -fred (27 years ago, 9-May-97, to lugnet.robotics.handyboard)
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| | Looking to purchase Used Handy board
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Anybody have a working handy board for sale? I am interested in getting my kids involved and would to keep the costs down. If price is right, including manuals, etc I would mail a check to you. Larry Washburn (Live in Maryland) (27 years ago, 9-May-97, to lugnet.robotics.handyboard)
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| | Vector 2x Problems...
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I am having trouble using the Vector 2x Compass with my handyboard. I have the compass.asm file and the compass.icb file. I loaded the compass.icb file into the lib_hb.lis file so it would load automatically with IC. When I loaded IC, it said the (...) (27 years ago, 9-May-97, to lugnet.robotics.handyboard)
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| | Unsubscribe
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UNSUBSCRIBE Thank very much. Ben (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: Accessing 2nd line of display
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I *think* rather than /n if you type /m it should be in the second line....I don't remember which letter it is, nor do I have the robotics books near me. Or you can have however many spaces as there are (10? 15?) cursor blanks and leave off the \n (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: RF transmitters
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(...) A simple way to get rid of the DC component is to run the data through a scrambler on the TX side, and descrambler on the RX side. This has been done successfully in 9600 baud amateur radio TNC's. 2 or 3 chips on each end of the link is all it (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | RF transmitters
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(...) We did use 900 Mhz Radio Shack RF headphones (cat # 33-1145), which gave us a reasonable analog transmission (the transmitter took L+R RCA audio in, and the we connected in place of the speaker on the receiver). We could get 9600 baud through (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | RE: (no subject)
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(...) If anyone can find Proxim RXA-1000 radios (900 Mhz, Direct Sequence Spread Spectrum), I wrote code for a Handyboard to program the synthesizer. You have to program two registers serially, and then must program one of those registers each time (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Spread Spectrum
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<bold>Fred Cass,FCass@nextwavet...m,Internet writes: </bold><x-quoted>I would also be interested in hearing if there are any inexpensive (<<$500), easy to implement wireless comm solutions. Perhaps spreadspectrum 900mhz, or RF...</x-quoted> By (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid Ultrasound
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Polariod OEM Components Group (617) 386-3965 ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: (no subject)
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Fred Cass, Seems like I remember reading in NUTS and VOLTS, or somewhere, about Randy Sargent and his partners involved in a competiton, using a Radio Shack AM transmitter on their robot. It gave details on how they interfaced it. Sounded pretty (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid Ultrasound
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(...) Try (URL) is where I bought my sonar transducer and ranging board for $50.00 +5.00 S/H. It came within a week and the quality is great. Keith Keith Soldavin kas219@email.psu.edu (URL) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Accessing 2nd line of display
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Howdy, One simple question. Is there a direct way to access the 2nd line of the display. Something like: printf("first line\n"); printf(?????); /* move cursor to second line */ printf("second line\n"); Thanks, Clay Timmons ctimmons@asic.sc.ti.com (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | RE: (no subject)
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(...) I would also be interested in hearing if there are any inexpensive (<$500), easy to implement wireless comm solutions. Perhaps spreadspectrum 900mhz, or RF... Thanks, -=Fred Cass=- (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Polaroid Ultrasound
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Where do people get their Polaroid or equivalent ultrasound sensors... the kind which are ready to be used, with circuit and everything...? Sincerely, Yoni Garbourg << To succeed, Atificial Intelligence needs 1.7 Einsteins, two Maxwells, five (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I think I know why it is so quiet...... There is only 3 weeks of school left! Exams and finals are coming up soon. well, I do have a question: Has anyone tried making a larger robot, like bigger than your average dog? I'm thinking about it, and (...) (27 years ago, 8-May-97, to lugnet.robotics.handyboard)
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| | Re: Data, are you out there?
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(...) Sounds about right. Some displays are worse than others. I just happened to get one with a contrast that wouldn't work well until I did the above mod. As I recall, out of the first there pins, one is +5V, one is GND, and one is the contrast (...) (27 years ago, 7-May-97, to lugnet.robotics.handyboard)
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| | Data, are you out there?
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HELLO.....Hello........llo....... Is anyone out there? I've been on this board since the beginning of the year...this is the quietest I've ever seen it. I sure miss reading all the questions and comments. Has anyone tried adjusting the contrast of (...) (27 years ago, 7-May-97, to lugnet.robotics.handyboard)
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| | Mobil Robotics Jones/Flynn book.
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I have a Mobil Robots book for $25. If interested respond to kvclark@juno.com (27 years ago, 6-May-97, to lugnet.robotics.handyboard)
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| | (no subject)
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(27 years ago, 6-May-97, to lugnet.robotics.handyboard)
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| | Problems controlling RC Servos
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Some time ago I tried the use of the HB to control a RC Servo using the single servo control software that was available in the HB web page. At that time I made it work and everything seemed to work fine. Yesterday I tried to do it again. (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | Re: I think I blew my HB :(
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(...) All I know is I lost all functionality, i.e. program no longer ran. I poked for the problem, found I had 5V, and then found Ray Butt's Tcomp. I just opted for the easiest solution. It was a natural evolution for me, because I needed to be 'E1 (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | Re: IR o/p
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(...) some questions on the IR transmitter..... This is what i get on my scope when i connected the +ve to the (...) ------||-------||---...----||---- (...) 40KHz, ie(25microsec) is it the time period of the high (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | Bot Base FOR SALE
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Unfinished BOT BASE: $25 (includes shipping) Mobil robot base simular to the Rug Warrior. made out of 2 6 inch clear Acrylic plastic circles. 2 modified servos with rubber airplane wheels. and ping pong ball rear caster. Respond and ill send a email (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | Re: I think I blew my HB :(
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So you only recovered the power supply? Everthing else was bolwn up? I tested my motor chips and they appears fine so far as I can tell. I also had external circuitry with some cmos logic (inverters) and they were fine too so I imagine the latches (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | Re: I think I blew my HB :(
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(...) I did the something similar, with the same results. I poked around a little, but ended up buying a Tcomp (E1 based board from Ray Butts) and gluing it to the HB as a power supply. This meant using a new programming environment, but it only (...) (27 years ago, 5-May-97, to lugnet.robotics.handyboard)
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| | UNSUBSCRIBE
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UNSUBSCRIBE Thanks - john (27 years ago, 3-May-97, to lugnet.robotics.handyboard)
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| | (no subject)
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UNSUBSCRIBE (27 years ago, 3-May-97, to lugnet.robotics.handyboard)
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| | Re: HB is a winner!
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Thanks for all the congrats! We used all 16 sensor ports, and whenever we had to unhook them to fix up the robot it was a big hassle. The wires that hook up to each sensor port were fed through holes in the body of the robot. We thought of making (...) (27 years ago, 3-May-97, to lugnet.robotics.handyboard)
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| | Re: HB is a winner!
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(...) What I did (and am doing) for that was this. (Note: I am neither a computer person nor an electronics person--I know a minimal amount of each) I bought a 20-pin connection thingies, the type that *can't* break apart. I used an X-ACTO knife to (...) (27 years ago, 3-May-97, to lugnet.robotics.handyboard)
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| | I think I blew my HB :(
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Help! I put 12 V into the power header by accident for about 1 second. Now when I turn it on, all I get is the BATT, PWR, 1R, 2R, 3R, 4R lit and the LCD just has the 1st line all lit. I tried to put it in bootstrap and stuff, but everthing I do the (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Re: Problem in program
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Thanks for the responses on my code problem, I shall try all the suggestions. My apologies to Chris on the baffling code, as a newcomer to C or IC, I'm in a major learning curve (like at the first bend :) ). And sorry about the formatting, All the (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Re: Problem in program
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Hi Terry, From looking at the code shortly, I believe the problem is at (and at the right side, .. as well). (...) The detection of from digital input 15 works and move the motor back ward until it does not detect no more thing. The print statement (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Re: Problem in program
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(...) Terry, Try putting a sleep(.1); statement after the printf statements the board may be working to fast to read the LCD. Terry Gathright 669@worldnet.att.net (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Re: DMSC problems
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Dear Handy Board & Interactive-C Users, Digital Micro Systems is pleased to offer Interactive-C v 3.1 online. We have been accepting online orders since Thursday, April 24, 1997 at: (URL) has been working closely with Newton Labs to bring this new (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | DMSC problems
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Has anyone had any luck ordering IC online from DMSC? I ordered mine last week, and the seven days is up with no response, and no permanent license key. I can't seem to find any e-mail address for customer support other than webmaster@, anyone know (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Re: digital output
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(...) You might try using PortD (the header poking out of the lower right side of the LCD) /* set DDRC */ poke(0x1009,0x3c); #define PD2 0b000...000100 /* aka MISO */ #define PD3 0b000...0001000 /* MOSI */ #define PD4 0b000...00010000 /* SCK */ (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | HB is a winner!
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I just wanted to share my enthusiasm for the HB! Yesterday I took a robot I was involved in creating to a the first American Nuclear Society Robotics and Remote Systems Division Student Robotics Competition. I am glad to say that the HB was the key (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | digital output
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Has anyone used any external devices with the HandyBoard that require a digital output from the microprocessor, such as pin PA6 or PA7? Currently there is an IR transmitter on PA6, and we want to use such an output to open/close a gripper of a robot (...) (27 years ago, 2-May-97, to lugnet.robotics.handyboard)
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| | Problem in program
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Greetings everyone! I'm working on a navigation program that has a funny quirk in it. I'm hoping one of you IC pros can explain my error. As far as reading the info from the sensors (RS 40 Khz IR module) and activating the motor ports, it works (...) (27 years ago, 1-May-97, to lugnet.robotics.handyboard)
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| | Re: IC Question
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(...) I haven't tried this, but there is a dos command which will allow you to display a file 1 page at a time. Try the "Type" command then "file name" you want to see, followed by a pipe (| shift-backslash), "more" command, then enter. If this (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | Re: IC Question
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I was just wondering if anyone knew of a better way to see all of the functions when you type list functions on the DOS IC screen. On my P166 it is nearly impossible to press the enter key and then the Pause button before all of the functions have (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | my IR wont work
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Hi all, my IR just doesnt budge.... I poke(0x1000, 0x40) at the C: prompt and connected the oscilloscope to the IR LED. The oscilloscpe showed a straight line at about 5Volts. I tried using Radio Shack IR sensor card and but didnt find any trace of (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | Re: IC Question
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Imagine me... answering somebodys IC question....Anyway, in response to Bill Conroy's question, when using the IC dos version, there is a way to see the entire "list function". After running the command, hit the "Pause" key and this will stop the (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | Re: IC question
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Are you sure you are using the Handy Board libraries? Make sure that you are set up to load "lib_hb.lis" and NOT "lib_r22.lis". -Fred (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | interfacing HB w/Mini-SSC
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Fred (or anyone), I'm working with a group trying to interface Scott Edward's Mini-SSC II with the HB. By directly connecting the SSC to a computer and running a simple QBASIC program, we verified that the SSC works correctly when it receives proper (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | Expansion board
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Is there a tenative date that the expansion board will be released? If it is still in the works I would like to make a suggestion for the design. Along with the other functions already described (ie. sonar connection, more analog inputs, ect...) I (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | Re: IC question
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Bill, If you use the windows IC you won't have this problem. As for the Dos version, I had the same problem, but never figured out how to either slow it down or pipe it to more. My suggestion, just use the windows IC. :) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | IC question
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Is there a way to get IC to list a page worth of functions with the command: "list functions". Now that I have successfully communicated with the board, I am writing control code for it. I have the motor circuits under program control and am now (...) (27 years ago, 30-Apr-97, to lugnet.robotics.handyboard)
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| | program needed
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could someone send me a copy of a simple light sensor program for my handyboard or fill me in as to where i may get a copy?? thanks (27 years ago, 29-Apr-97, to lugnet.robotics.handyboard)
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| | Connecting a Sharp GP1U58Y
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Hi. I'm trying to connect a Sharp GP1U58Y 38KHz IR detector to one of the analog inputs. The problem is that the device outputs a voltage and doesn't seem to be pull down transistor device so the internal 47K pullup seems to be messing it up. Any (...) (27 years ago, 29-Apr-97, to lugnet.robotics.handyboard)
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| | part number for ceramic resonator X1?
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Hi, the parts list for the Handyboard doesn't list a part number for a ceramic resonator, only for an 8mHz crystal. Does anyone know the number for the substitute ceramic resonator? Thanks, Duncan (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Can't seem to find Sharp IS1U60...
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Hi, I can't locate the Sharp IS1U60 IR demodulator anywhere. Everyone seems to be out of stock or requires a minimum order. Has anyone had any luck getting one of these recently? Thanks, Duncan (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Learning IC
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Greetings everyone! When it comes to programming in IC, sometimes I think I'm starting to learn something and other times I feel like a complete idiot. I think it's mostly syntax thats killing me. And things like while within a while....and the ! == (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Motor Driver Chips
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The current still goes through the chip. 1 amp max. But now it will get more hot cuz you disipate more power accross the integrated transistors with the higher voltage. I think Fred mentioned that there was a thermal shutdown. (Is this true?) But I (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | RE: 6220-01 Undeliverable message attached
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The attached reply could not be delivered to the following recipients because of incomplete addressing information. Please contact your cc:Mail administrator. *"HandyBoard" <handyboard@media.mit.edu> at SSWGATE (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | RE: 6220-00 COVER MEMO: Undeliverable message attached
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---...--- ---...--- Soft-Switch Cover Memo ---...--- ---...--- Date: 04/28/97 Time: 10:01 Distribution ID : CCMAIL.EMAR.6220 ---...--- -- The items described below were sent as separate distributions: -- ---...--- ---...--- (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) R> Before I purchase the $50 vector 2X compass, I want to know if it R> is compatible with the version 1.2 handyboard. I would also like Yes it is. R> to know how many handyboards ports are needed to interface with R> the vector 2X compass. If (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Motor Driver Chips
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With external batteries driving the motor outputs(12V), does one have to worry about the 1amp rule of the driver chips, or can the chips still support a loas of 1amp before gong haywire? Sincerely, Yoni Garbourg << To succeed, Atificial Intelligence (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Before I purchase the $50 vector 2X compass, I want to know if it is compatible with the version 1.2 handyboard. I would also like to know how many handyboards ports are needed to interface with the vector 2X compass. If possible, I would like to (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Sonar problems
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thats the way i have it sorry typed analog when i should have typed digital any other suggestion are more than welcome thank you bryan wiabel offrds2@aol.com (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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Greetings all, This is the periodic reminder on how to be removed from the Handy Board mailing list: Write to me, Fred Martin, fredm@media.mit.edu, and ask. Also, please note that the Media Lab sysadmins changed some internals of the mailing list (...) (27 years ago, 28-Apr-97, to lugnet.robotics.handyboard)
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| | Stuph!
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Hello! I ralize this was already spoke about before, but I've lost all my emails from before 4/20/97, due to a crash with my Eudora program, but could anyone tell me on personal experiances on getting the handyboard top talk? and links to suppliers? (...) (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | Re: HB connectors
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I have seen them at active electronics in Woburn... -Jeremy (...) jag@world.std.com jag@brownout.com (URL) mailto:jag@brownout.com (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | Re: digital output?
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Use the SPI bus. Look at the HB HP FAQ for details. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and (...) (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Sonar problems
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Digital Port 0 <- ECHO ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (...) (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Communication problem
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This drove me nuts, I tried DL and HBDL both gave me numerous different error messages. I finally told win95 to shutdown and restart in MSDOS mode. Then using the DL program, everything now works correctly. It is quite a rush to finally see the (...) (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | UNSUBSCRIBE
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UNSUBSCRIBE (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | input capture interrupts?
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I would like to use the PortA input capture interrupts. Has anyone succeeded in writting code using Interactive C that accomplishes this? If so could you post or send me some sample code? Thanks Raj (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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| | digital output?
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I need four digital outputs to signal external circuitry. What's the best method? I would prefer something that does not require any additional address decoders or anything. Raj (27 years ago, 27-Apr-97, to lugnet.robotics.handyboard)
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