 | | Douglas Electronics Expansion Board.
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I ordered the kit the first day I could. I got it last Friday, and put it together over the weekend. The douglas board comes with NO assembly instrictions! These are some notes that ought to make things easier for others: RP1 & RP2: The both have a (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) Just thought I would add that it *is* possible (if a bit slow) to read an analog signal w/ a digital port by timing the decay of the signal thru a RC circuit...not a particularly precise method, either. < Watching for the Fedex guy bringing my (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) A digital port can't have the capability of an analog port, since it has only one bit of information with which to work. (A 256-value analog port has eight bits.) You could perhaps hook an analog sensor up to a digital port using some sort of (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: IC PROBLEM
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yes, you are having lib conflicts. you should get the latest at (URL) latest has _raw_analog in the .icb file and NOT in the lib_hb.c file. re: synchronizing probs, try running IC in a full screen DOS window, or boot your computer in DOS mode. the (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Scrolling through the LCD messages by the knob
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Hi Gustav, ich habe für mein HB ein Menüprogramm geschrieben, mit dem man mehrere Menüpunkte durchscrollen kann (Parametereingabe etc.) Falls Du noch interesse hast, sag Bescheid dann kram ich mal den Sourcecode bei mir wieder aus ! Tschau Bernd (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: cant control motor speed
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Hi Jeremy, Question: Do you use 30V for your Motor ? (external) IF NO: I´m testing several Motors from copier-machines (12V-24V) with my HB. Some motors didn´t work properly with PWM. For example Motor 24V I´m using ist with for 12V Motor (0,100) (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Repost: CD-ROM used as Audio CD player
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Hi, there must be somebody out there (except for you, Phil, thanks for your answer!) with useful informationon ;-) (...) Best regards, Alf (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Dear Mr Fred Martin/friends, The handy board assembly manual speaks of a custom testing software needed to test memory. I want it urgently to test memory ICs used on the handy board to find whether they is working properly. If you know where it can (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Readings
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yes, memory wires should be oscillating, back and forth betw 0 and 5 volts. this is not floating; floating implies not connected. re: your other DL probs, usually, it is a bad connection on the PCB. try continuity checks on the memory subsystem. (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | ROVER
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Dear Friends, I had written to you about a rover we are making at VESIT-Bombay -India.We had encountered some problems regarding downloading the pcode_hb.s19 file.I thank you for the advice that you have offered us in this context. If we now (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Readings
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Fred- You left it unclear in an explanation to another letter. You were answering the fellow from India as to what readings one should see when useing a logic probe on the memory chip. You said that if one was stuck at 1 or zero-it might be (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Piezo Spkr Volume
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Is there any method of increasing the volume (amplitude) of the piezo speaker on the HB? Mine is extremely faint and can only be heard within a few inches from the board. (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Expansion board Library
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Greetings, I have assembled my expansion board, mounted on the main board,running IC v3.1. Have downloaded expansion board libraries zip files,unziped and are inC/:Desktop/IC/ir/l...sion-libs. I have not been able to load expansion board files. Do I (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Handyboard for sale?
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If anyone has a handyboard w/wo an expansion board for sale. I would like to talk to you Jessemc@mail.utexas.edu (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion board motor outs???
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if this wasn't answered... yes, all DC motor outs are still available. fred (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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i am sorry, but i have never readied that software. to debug, use a logic probe and check all of the 28 pins of the RAM chip. address, data, and enable lines should be flashing when the HB is turned on. if you see a line stuck at 0 or 1 that might (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Processor load
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1) Is there a way to print the actual processor load onto the screen ? or another way to see for example how much load a program causes ? 2) Does anyone know what resistors i need to produce a voltage divider to measure the voltage of the battery (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | digital and analog port on HD
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Hi, I want to use the digital port as an analog port input. How should I convert the digital port to analog in using programming way ? I do not quite understand the explanation on the technical manual handout. if possible, how to convert the analog (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Polaroid 6500 Ranging System
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I recently purchased a 6500 ranging system and have connected it to the HandyBoard (HB) 1.2 Expansion Board. I am using IC ver 3.1 from Newton Research Labs and loaded the sonar.c code module provided through the MIT website. The HB passed all (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: help again
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check that the RxD line on the hc11 is properly pulled up to +5v through R15. also, make sure you are *HOLDING DOWN* the STOP button until the BATT light goes off. this wasn't clear from your msg. finally, try getting the HB into boot mode with the (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Grounding robots
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(...) By ground, I just meant the HB ground. The important thing is just that everything in an electronic system share the same ground; voltages are relative, and the ground is just the shared reference point--the point arbitrarily defined to be (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Continuous charging
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Graham, J. Todd wrote: <snip> (...) If you use zap charge mode, you'll end up cooking your batteries unless the HB draws just the right amount of current. If you use any motors or other high current devices connected to the HB, trickle charge mode (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | help again
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thanks to the immediate responses from the mailing list I was able to remove the connector bug from my handy bosrd and now my interface board is complete. But the handy board does not enter the download mode The sitution is as follows: Once I (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | RE: gpu5x??
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Step 8.2.1 of the Handy board Assembly insructions has code that lights a motor port LED when a TV remote is aimed at the infared demodulator it says to type the following at the IC prompt: while (1) {if (4 & peek(0x1000)) fd(0); else bk(0);} (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Capacitors Voltages?
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May I know the voltage of the capacitors for the Handy-Board partlist. Or where can I find out (web site)? Thank u. (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: CD-ROM used as Audio CD player
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Never done it before, Alf, but here are a few hints. First off, learn about the IDE interface. These CD-ROM drives are cheaper than SCSI. Also, try to find source code for a CD player on-line, and examine it to see how it works. Last, why not just (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: gpu5x??
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Hi I have those infrared sharp devices "Gpu5x or something like that" how can I get it to light an led when it sees the transmitting infrared led? A schematic or page to go to would be much appreciated ! thanks -Mike (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: RESEND--Re: Help with Power Scheme, Please...
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Thank you for your help :) Just one more questions, please... How can I ground a mobile robot ? Best regards, Andre. (...) | (...) | (...) | (...) | (...) |------+ (...) ===...=== Andre Philippi - Applications Developer | Phone: 626-296-5016 (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Motor output LED
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Hi all! I got a question. Whenever I connect the motor outputs to a scope (I wanted to read the output of the HB), the LEDs light up even with the output off (ao())... Can anyone explain this to me? Thanks. Keith (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | RE: RESEND--Re: Help with Power Scheme, Please...
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In the example, are there any advantages or disadvantages in using a voltage regulator (such as a 7805) to dropping the voltage from 12v to 5v as opposed to using a diode string? Also, I guess no one had an answer on the earlier question of running (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Scrolling through the LCD messages by the knob
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Simon, This shouldn't be too difficult to create...but it could be a real waste of memory unless it is real important issue. The reason why is that you would have to save the messages in memory. You'd have to decide if you wanted to fill all the (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Scrolling through the LCD messages by the knob
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(...) Yes, and it is totally trivial to do so. I don't have my sources here at the moment, but it is roughly like this: c = readknob(); /* or whatever the cmd is for reading it */ if ( c < 64 ) { print "a"; } else if ( c < 128 ) { print "b"; } else (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | RESEND--Re: Help with Power Scheme, Please...
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I apologize for having sent the following with extra line-feeds in it; Here it is again: 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 (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | Scrolling through the LCD messages by the knob
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Hi, i am looking for a program to use the knob for scrolling through messages. i really need this, because i have to output more than 32 chars (and there isnt enough space for a larger display ). i have read about using the knob for scrolling on the (...) (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | UCOS
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Has anybody tried to use HB with the ucos (the real time OS developed by Jean Labrosse)? Thanks. Aldo Gentile aldo@lacapital.com.ar (26 years ago, 15-Jan-99, to lugnet.robotics.handyboard)
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| | 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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