 | | Re: Clearing the LCD
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I've always used printf("\n\n"); hope it helps! --philsky (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Help with Power Scheme, Please...
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Hi Everybody, I'm trying to hook-up the Handy Board, an R/C car chassis, and a wireless camera together, and here's what I was planning to do about the power... +---...---+ +---...---| Handy Board +------+ | +12v +----+-----+----+ | | +---...---+ | (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Re: TI SN754410
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Try here: (URL) luck, - - - Nick - - - (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Re: TI SN754410
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(...) I don't know of a supplier for the SN754410, but the originally specified L239D is readily available from: Maplins (code No. AH80B) for 3.99 UKP inc VAT, or Farnell (code No. 699809) for 5.04 UKP + VAT Both of these companies have UK websites. (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Clearing the LCD
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Hi everyone, Quick question! What's the IC command to clear the LCD? Thanks for the help in advance. Bill Denzel Senior Mechatronics Student California Polytechnic State University San Luis Obispo (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | FingerBoard Users?
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I want to add a minimal board as a slave to my HandyBoard. My choices seem to be the FingerBoard, MiniBoard, and BOTBoard. At this point the FingerBoard is my first choice. Is there anyone here who has used this board? Any comments? Pros and cons of (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Help with cables
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milind, To check your phone cord, hold the ends together so that the wires are away from each other. Look through the clear connector. The wire colors should line up in this orientation. There is a little more to the DB-25 issue. "Null modem" vs. (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | assembling the pcode
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hi i've recently modified the pcode.asm file to make the timer interrupt occur at 2KHz, rather than 1KHz. does anyone know how i'm supposed to assemble/compile this pcode.asm file into the pcode_hb.s19 file that will be loaded into the Handyboard? (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Re: TI SN754410
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(...) If you can't find the TI chip try doubling up on the L293D by piggybacking them on top of each other for added amps. You can use one L293D with an additional L293 on top of it (the 'D' has protection diodes that you MUST have). You may need to (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Help
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thank you for the apt and quick reply. if you could tell us what is the difference between a straight through cable and a null modem cable it would be great( we are using a 25 female to 25 female connector) and how to identify the difference between (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Dear Friends, We, at VESIT ,Bombay,India are making a rover which is capable of navigating itself and avoiding obstacles.For this,we are using the handy board.The soldering work has been completed and we are now trying to use 'download software' (...) (26 years ago, 14-Jan-99, to lugnet.robotics.handyboard)
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| | Serial interface
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Re Serial interface problems in Bombay When I assembled the inteface board, I made the mistake of putting a male connector on the interface board. I had the same problems as you and this turned out to be the obvious cause.... so double check all (...) (26 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Digital troubles
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Hi all, I am assembling a handyboard and things have gone well until I got to the section 7.1.1 in the assembly manual. I assembled the digital inputs, and when I used the function testdigitals(), the start button is the only one that will register (...) (26 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | troubleshooting
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The interface charger board is soldered and the max232 chip has been tested works perfectly and the green led SER glows on shorting the pind of max232 and the J3 socket. But when the host computer is connected and the proper downloaded is connected (...) (26 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | Re: serial interface trouble
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SHETTI.NITIN.MANGESH wrote: <snip> (...) The most common problems seem to be with the types of cables and the serial port settings. Make sure that you are using a straight through cable (not a null modem cable) to connect the HB to the serial port, (...) (26 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | RE: interface problem
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This can take a long time. Start by making sure that the cable is correct. You can do this by changing the Rx and Tx lines. If this does not help de Maxim serial driver can be faulty. Last check the solder joints.I once looked at them and could not (...) (26 years ago, 13-Jan-99, to lugnet.robotics.handyboard)
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| | 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. (...) (26 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 (...) (26 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 (...) (26 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. (...) (26 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 (...) (26 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 (...) (26 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 (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (26 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 (...) (26 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 (...) (26 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. (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | Motor Ports
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Hi all, Is it possible to add more motor ports to the handy board by simply copying the existing motor drive circuit and putting them on the expansion header where the extra chip select lines are. if so what changes would be needed to make IC (...) (26 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | motor ports
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Hi all, Is it possible to add more motor ports to the handy board by simply copying the existing motor drive circuit and putting them on the expansion header where the extra chip select lines are. if so what changes would be needed to make IC (...) (26 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | Expansion board motor outs???
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I just wanted to verify something before I went and purchased the expansion board. Are the HB's motor outputs still available when using the expansion board. It is unclear in the doc. Thanks, Aaron (26 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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| | Wireless Handyboard Link ?
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Hello, I am investigating createing a wireless serial link between my PC and handyboard. The cheapest solution I've found is the RF module from Lynxmotion. Does anyone have any experience with this, or perhaps suggestions for simpler or more (...) (26 years ago, 11-Jan-99, to lugnet.robotics.handyboard)
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