 | | Radiometrix address
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Radiometrix Ltd. is at lemosint@ma.ultranet.com Contact Danny Lemos 508 798 5004 ___...___ Chad Pennebaker, President mailto:chad_pennebak...ouglas.com ** Creators of the Douglas CAD/CAM System for Macintosh PCB Design ** Douglas Electronics, Inc. (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Wireless Handyboard Link ?
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I obtained the RF wireless kit ( HP Series ) from Lynx Technologies a while ago, and I have not had any success yet. My guess is that the handyboard is unable to "Synchronize with the board" with the half- duplex communication provided by the kit. I (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | GP2D02 Interface Question?
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Attached below is IC code for a GP2D02 rangefinder. This is a slightly enhanced version of code from Bjorn Astrand. My question relates to the use of TMSK1 in the code. From reading various M69HC11 documents, I think (???) that I know what bits are (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Downloading problems
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The other day I posted to this board that I was having downloading problems with a HB which once had none. Simon very kindly E-mailed me reminding me about the proper phone cable. Seeing he was the only one-I-by necessity have become an expert. (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Re: motor ports
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Russell, Just a suggestion from experience. Before you invest a lot of time developing hardware to expand the capability of the Handy Board, I suggest you write the program. Just "stub out" the motors you don't have with dummy subroutines, or for (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Generic expansion board?
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Has anyone ever created a generic expansion board for the HandyBoard? What I mean by generic, is a board with say a .10 grid hole pattern and some power and ground traces . A board or boards like this with custom circuitry, could be stacked on top (...) (28 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Anyone have the HB in continuous powerup?
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Hi all, Is anyone using the HB in a continuous powered up situation? Any problems with it? Also, Anyone know how to use a Timer circuit (Date & Time) with the HB? I'd like to have timed (Daily/weekly/monthly) events. Thanks! Gerald (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | The Onboard memory Circuit
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I have some questions about the handyboard memory: 1) Does it matter if i use a 70ns Eprom instead of the 100ns one? 2) Can you use EEproms or FlashRoms instead of the Eprom ? 3) Can i use more memory than the 256 KB ? And is there a exchange (...) (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | RE: Motor Ports
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Russ, This would not suffice. The PCODE would need to be changed as well. The end result of the motor interface routines in C in LIB_HB.C is that RAM locations 0x0E, and 0x22-0x25 have the direction and speed pattern info for each of the four (...) (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | Re: UCOS
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I'm also very interested in using UCOS in HB. IC is very slow and have very stupid multitasking. Until now I find only basic HB library for ICC11 ((URL) library is at ftp://ftp.imagecraft.../libhb.zip It may by usable with UCOS. ===...=== Andrew (...) (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | improper removal from list.. i apologize.
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please remove jackedin@earthlink.net from the handyboard mailing list.. this is not the proper way to ask, but am aware of the trouble for the admins to remove a user. i cant access earthlink, any other way than fetchmail at the moment.. thanks and (...) (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | list
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Plese remove me from the e-mail list (28 years ago, 12-Jan-99, to lugnet.robotics.handyboard)
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| | Fw: 360 degree ranging
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I'm building a theory about how to make a 360 range finding system. It only needs to be accurate out to, say, a foot or 18 inches. basically it's a "before you bump" bump system. I've thought of using a series of IR emitters/detectors in a circular (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | 360 degree ranging
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I'm building a theory about how to make a 360 range finding system. It only needs to be accurate out to, say, a foot or 18 inches. basically it's a "before you bump" bump system. I've thought of using a series of IR emitters/detectors in a circular (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | Re: TI SN754410
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(...) There is nothing wrong with using fuses (or circuit breakers) on motor circuits. This can protect the chips, AND the motor. (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | TI SN754410
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Hi, this must have been asked before. But where can I get the TI SN754410 from On-line ordering if possible or a UK supplier. I managed burn one out on my Handy Board at the weekend :o( is there a way to protect these chips from motors that take too (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | RE: HB and Acceleration
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Hi Philsky; I've seen videos of some of these "serious amateur" rocket launches, and from that I would say acceleration is your prime concern, followed by shock and vibration. I'm assuming you will substitute a lightweight 9V lithium battery for the (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | Re: HB and Acceleration
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(...) Most likely not, Max, unless I save up a lot of money and get a daVinci organizer or something like that and write up a donwlink program... :-) There's this thing here in Wisconsin (And in Michigan and Iowa) called "Rockets for Schools" It (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | cant control motor speed
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dear fred and readers my motors is 30V. i am using the external batteries as instructed on the website. but i cant control the motor speed using the command: motor(0,...) i then remove the external batts and supply power to the other power pts(top (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | DL problems
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I put together the HB shortly after it first became available. This is key because it worked-downloading and all. I put it down for a year because of family problems but all that time left it plugged in because of the Ni-cad. I feel that should (...) (28 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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