 | | 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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