 | | What a day.
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Well I wanted to demo my new robot it was cool, but the day did not turn out to well. I think I switched the phone cables. When I tried to connect my interface board with the HB, it would not run IC. I then tried to download a new PCODE_HR.S19, but (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | (no subject)
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1. Is it possible to expand the 32K RAM of the Handy Board? If so, how? 2. We will be using two shaft encoders (HEDS5500 from Hewlett-Packard) for our project. How can we interface the shaft encoders to the Handy Board? What inputs do we use? Does (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Power Supply
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I'm using the 1.2 volt NiCad's wired in series to give me 9.6 volts. If I want to get rid of one or two of the batteries, will the handyboard still run at 7.2 or 6.0 volts ? What is the minimum voltage that the handyboard will run on, 5V ? I dont (...) (28 years ago, 27-Jan-97, to lugnet.robotics.handyboard)
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| | Unsubscribe
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Please drop me from the list. I can't handle the volume. Ken Owen (28 years ago, 27-Jan-97, to lugnet.robotics.handyboard)
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| | as11
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Can anyone tell me how to get the Motorola freeware assembler for the HC11, to run on a PC? Thanks Richard Whitehead (28 years ago, 27-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Mobile Robots book
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I recieved my copy in a special deal from a book club that catered to electronics enthusiasts. It was a kind of Book-of-the-month club. The name escapes me at the moment. Anyway, you got to choose 3 books for like $5. Then you just had to buy one (...) (28 years ago, 27-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x again
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(...) You'll need 3 input and 2 output lines. One input and two outputs are available at the SPI port, (right side of board, J6?). Find two more discrete inputs on the Handyboard and you're set. All the other inputs on the V2X can be hardwired high (...) (28 years ago, 27-Jan-97, to lugnet.robotics.handyboard)
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| | Vector 2x again
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I know this topic has come up time and time again, but from all the previous postings I still am unsure of some things. First of all has anyone be able to get the vector working *without* using any other microcontroller board (using only the (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | Re: -POWER-GLITCH-
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Make sure your downloader is configured to download "pcode_hb.s19" and not any of the other variants (eg pcode_r22.s19). Avard, please send me an email and let me know if this solves your problem. -Fred In your message you said: (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | Re: memory not remembering...
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Ben -- the pin 27 R/W line of the RAM should be connected directly to the R/W line of the 6811. I don't remember the pin # off hand -- it's 7 i think -- but just check the schematic. check the continuity first on the board. if that's ok, then check (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | memory not remembering...
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I'm stumped. In the process of assembling my first handyboard, I have just reached the stage where I install the memory (all previous checkpoints passed). The computer successfully downloads the bootstrap, sets the config register correctly, and (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | -POWER-GLITCH-
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My handyboard is experiencing some kind of a -POWER-GLITCH-. At least that's what is displayed just before the board shuts itself off. How did this happen, and what can I do about it? Thanks in advance. Avard Fairbanks (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | Re: IC loop
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(...) There are a number of ways to do this in C. If you get the code that comes with the Handyboard, they have msleep(500L); which sleeps for 500 milliseconds (L for LONG Integer) and then returns to the calling program. My code is at work, but I'm (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Mobile Robots book
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(...) True. I ordered one, then another a few weeks later at $4.95. About two months ago I tried to get five and they were out of stock. They won't post their phone number and it isn't included in their newspaper-like catalog that I now get every (...) (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | IC 3.1
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Has anyone used IC 3.1 yet and does anyone know when it will be available for Windows 3.11 or win32? Thanks. Keith Soldavin kas219@email.psu.edu (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Mobile Robots book
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(...) Yes, Edward R. Hamilton Booksellers has been sending me thier list periodically now and I never saw the Mobile Robots Book in it. I guess it's a good chance that they probably will not restock it. (...) (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | 8MHz crystal
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The 8MHz crystal is no longer listed in the Mouser Catalog (part #332-5080). When I look in the DigiKey catalog, it lists several 8 Mhz crystals with different load capacitances (18pF, 20pF, 32pF, and Series). Does it matter which I get? If so, (...) (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | Mobile Robots book
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Hello: Sometimes back there were posts here that the Mobile Robots book could be obtained from a bookseller in CT for $5! However, later appends said that this booksellers stock was exhausted. Are there any other discount book sellers around? (...) (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | thanks
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This is just a quick thank you to all those who replied to my plea for book information. I'm on the right track now. Gracias! Dave (28 years ago, 25-Jan-97, to lugnet.robotics.handyboard)
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| | books
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Hi all, What is the best way to get my hands on a copy of Mobile Robots: Inspiration to Implementation? My local book vendor wants me to wait two months for it. I'm hoping to find a faster solution. Thanks, Dave (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Please subscribe me to the handy board mailing list. Thank you very much. Michelle Conway ***...*** * Michelle Conway * wake up late and honey put on your * * Doyle 213 * clothes and take your credit card * * x3343 * to the licquor store, well (...) (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | (no subject)
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You are unsubscribed. For future reference, the way to unsubscribe is to write to me. fredm@media.mit.edu. -Fred In your message you said: (...) (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | LM052L LCD Display
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I have just had no success at all finding this part in the UK. I even talke to Hitachi UK and was told that if I wanted any it would have to be 100+ with a 20 week lead time! Now, I have an alternative fitted and working so there is no desperate (...) (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | bipolar steppers
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Suggestions Anyone???... Was wondering if anyone has an alternate solution to stepping a bipolar stepper? Currently.... I'm using an H-Bridge (driver if you will) SAA1042 (by Motorla) which is then getting its pulses from 1 of the motor outs on the (...) (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Can anyone tell me how to unsubscribe from the handyboard mailing list? thank you in advance, Zlatko Horvat (28 years ago, 24-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Problems with downloading
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Tom: Your tests, specifically the fact that the HB's PWR LED comes on after download fails, demonstrate conclusively that the HB can *receive* data from your PC. This proves that the downloading software is able to open the serial port properly, and (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | Problems with downloading
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I'm trying to download the pcode_hb.s19 file to the handy board and I'm having a very hard time. I using win95 on a P5 and 200mhz. I setup the com port settings at 110 and no data flow. When I run the hbdl program and try to download the file I get (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | RE: dual servo update
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(...) I use Futabas. The 32.768 mS interval is convenient because the 68HC11's 16-bit timer on a 2 MHz clock overflows at that time, allowing easier programming of the TOC functions. Has anyone found the upper limit on the time interval for Futaba (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | Re: IC loop
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Hi Wade, You can use the "seconds()" function which reports elapsed time, plus a variable to keep track of when the loop should end: void main() { float end_time; end_time= seconds() + 20.; /* go for 20 seconds */ while (seconds() < end_time) { /* (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | IC loop
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Hope someone can help, I have just written my first code for my bot. All I have done so far is make my bot go forward in about a 4 foot square area. I am now wanting to put a loop in the code so that it will continue for a certain length of time or (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | bipolar steppers
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Was wondering if anyone has an alternate solution to stepping a bipolar stepper? Currently.... I'm using an H-Bridge (driver if you will) SAA1042 (by Motorla) which is then getting its pulses from 1 of the motor outs on the Handy Board. The (...) (28 years ago, 23-Jan-97, to lugnet.robotics.handyboard)
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| | RE: dual servo update
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Mike writes : (...) The limit is specified by the product manufacturer. Futaba servos don't guarantee they will hold unless they see a pulse every 20mS. The Tower Hobbies servos are a bit more lenient. If you have the servo manufacturers data sheet, (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | Re: LCD screen
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(...) I ended up with a display that did this very thing (A Rolm display I think), and what I did was to cut the contrast lead coming out of the LED connector, and then solder a 20k pot to the GND, +5V, and Contrast leads so that I could vary the (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | Re: LCD screen
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Garth The contrast of the LCD can be adjusted. The third pin from the left side of the LCD, labeled VR on the HB is the contrast adjustment. You can cut this pin from the male header than connects to the HB. Solder a small trimmer pot with the wiper (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | Re: LCD screen
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I have seen cases where an LCD display was destroyed by excessive heat. I used to be in a car rallye club, and we had several timers destroyed by being left in a hot car. Could your board have been exposed to high temperatures during your travels? (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | Handy board use in Micromouse
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Hello, I am new to this group, so I may be repeating previously answered question. I wanted to know if anyone has looked into using the handyboard for building a Micromouse. Comments on their experiences and ideas would be appreciated. Tejesh (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | LCD screen
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After turning on my handy board after some traveling with it (and loading IC, etc) I have found that the contrast of the screen is very high. If looked at straight on the screen looks black (well, all black squares), but if looked at from an angle, (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | RE: dual servo update
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(...) I send my servos commands every 32.768 mS, and they work fine. I don't know what the limit is, but I don't think that 20 mS (50 Hz) is critical. * Michael L. Ross/C33 | Lockheed Martin Eng & Sci Svcs Co. **** * Robotics Department | 2400 Nasa (...) (28 years ago, 22-Jan-97, to lugnet.robotics.handyboard)
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| | Sharp IS1U60
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hi everyone, i bought 8 sharp IS1U60 IR detectors from Sterling Electronics.. (refernce "mobile robotics-inspiration to implementation) They have a $25 minimum purchase, the parts are reliable and are still working well for me. They cost $3.25 a (...) (28 years ago, 21-Jan-97, to lugnet.robotics.handyboard)
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| | dual servos
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Good Day, A consensus seems to be emerging among those who know more about pcode interrupt structure than I. The printf function does indeed disable the interrupts and run that way for quite a long time. Thus, the servo twitching seems to be mostly (...) (28 years ago, 21-Jan-97, to lugnet.robotics.handyboard)
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