 | | Re: Help with Power Scheme, Please...
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The main problem I see is with how you label the voltages at various points in the circuit. If you have a 12 V battery, the low voltage end is usually called zero volts and the high voltage end is called +12 volts (although the numbers are just (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | HBL: EPROM Microcontrolers
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FROM: Cesar Mello / cmello@cpovo.net Hi friends, Sorry if this subject isn't much related to the Handy Board, but I'd like to know something about the HC11 Eprom based microcontrollers, like the MC68hc11a8p. Does it have any means of booting from (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | HBL: EPROM Microcontrolers
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FROM: Cesar Mello / cmello@cpovo.net Hi friends, Sorry if this subject isn't much related to the Handy Board, but I'd like to know something about the HC11 Eprom based microcontrollers, like the MC68hc11a8p. Does it have any means of booting from (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Mobile robot QT demo in my HP
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I have Quick Time movies of my robot going about life! visit: www.cooper.edu/~mar Background: As a Masters student I created a mobile robot using the Handy Board. Many of you may remeber me bugging you with questions. :) Well, that all payed off and (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | CD-ROM used as Audio CD player
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Hi, I'd like to control an IDE or SCSI CD-ROM with my HB in order to play audio CDs (ff, rew, shuffle etc.). Did anybody do that before? I'll appreciate any hint! Best regards, Alf (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | 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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