 | | differential steering
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Hi, I what to built a four wheeled robot which uses differential steering. Have somebody an idea to transfer the motion energy from the motor powered back wheels to the front wheels? Jens (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: before I reinvent the wheel
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before I reinvent the wheelI haven't actually done this, but I'm pretty sure the theory is ok... On the handyboard web page is the pa79600 icb file which lets you use port a bit 7 as serial i/o. I have successfully used this to control some (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | before I reinvent the wheel
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Has anyone used their HP48 to talk to a handyboard? (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | Using 12V supply with Expansion Board?
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Hello 'Botter, I think I am about to ask a stupid question but as a precaution, will the Expansion board be "ok" with a new 12V motor supply rather than the 9.6V connected to the Power Expansion header (J13)on the HB since the Expansion board and HB (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | (canceled)
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| | Re: Shaft encoder
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(...) The shaft encoder library routine available from the Handy Board web site works great for me. Just follow the links to Software, then Libraries, then Shaft encoders. Good luck! -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | RE: OVER 1 AMP
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You can also stack a few of the original chips to make em work in parrallel. (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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Oh yeah, one more thing, how about connecting a 5 ohm resistor in series with a DC motor and there are 2 amps flowing, then the resistor is dissipating 20 watts of heat. Now I could have a higher value for the resistor, like 7, 10 ohms, I think that (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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Thanks everyone for your help, Now, I recieved two good answers for my problems. 1) Built an H-Bridge 2) Use the LMD18200 Now has any one any documentation on an easy H bridge that I could build without wasting much time? The same goes for the (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | Shaft encoder
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To anybody, I have build a shaft encoder. Where can I get the software driver to evaluate the encoder data? Thanx, Jens (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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Do you know where the Caps Lock key is on your keyboard? Look for it, there is a little diode lighting up when it's on. If you see the little light, please do me a favor and before typing your email press the caps lock key once. GET IT? THANKS FOR (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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(...) Yes. (...) Built my own H-bridge. (...) No, they would burn up. (...) Yes, it would burn them up. It is much easier to build and H-bridge. (...) A simple common collector H-bridge made out of TIP120 and TIP125 power transistors will handle (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: [OT] decoding the LEGO #9738 IR Remote Control
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Matt - - Downloaded Max Davies' files, ran them on my HandyBoard ... decoded the IR signal from both RCA and GE TV/VCR remotes with no problem, but with the LEGO remote it says "RC-5 NOT SUPPORTED". I guess that RC-5 is an IR encoding protocol ... (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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HAS ANY ONE USED MOTORS RATED OVER 1 AMP WITH THE HANDY BOARD? IF SO, HOW DID YOU GO ABOUT INTERFACING WITH THE HB? DID ANYONE USE THE L293 D/B, OR THE SNJ74 ? IS IT A BAD IDEA TO PIGGY-BACK MORE THAN TWO OF THESE CHIPS IN PARALLEL, SAY 3 OR 4? THIS (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Purchase 6811s
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BG Micro has 'em. go to www.bgmicro.com, click on "Shop Online," and search for "68HC11". fred In your message you said: (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Purchase 6811s
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Anyone know where I can purchase some MC68HC11A1FNs. A Motorola web-site or something. - Thanks (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | [OT] decoding the LEGO #9738 IR Remote Control
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Hello All: This LEGO IR remote control (#9738) is making me crazy!!!! For those of you who haven't been reading this thread, what I want to do is the following: The LEGO IR remote control is GREAT for use with 'bots using the LEGO RCX for brains. (...) (25 years ago, 19-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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I'll vouch for the efficacy of the Fascinating Electronics board. I got one years ago after reading the series in Electronics Now/Radio-Electronics using it as a weather monitor. It works fine connected to an HP48 calculator for control of I/O as (...) (25 years ago, 19-Sep-99, to lugnet.robotics.handyboard)
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| | noice
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Hi everybody, I'm a novice in the field of microcontrollers, and I'm trying to use the handyboard with ICC11V5 and NoICEV2.5.2. The compiler gave me no problem (thanks to a search on this list archive!) but I can't get NoICE to work. Has anybody on (...) (25 years ago, 17-Sep-99, to lugnet.robotics.handyboard)
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| | Re: HandyBoard and Jini
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(...) Since the HB does not support Java/RMI/TCP etc it's not likely that you'll see Jini on the HB any time soon. However, it would be fairly straightforward to create Jini proxies on a host computer that act on behalf on the HB functions. I plan (...) (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Boolean operators in IC
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Booleans work the same as in most languages. If you want to test for a certain condition or set of conditions, then break it down into things that can be answered as true or false. You can use equalities, such as: if (sky == blue) printf ("you're on (...) (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Re: proximity sensors
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(...) (URL) (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Boolean operators in IC
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Hi all, Can any body please explain me how to use Boolean operators in IC with some simple example as I could not find any example. Thanks. Kind Regards, Javaid Iqbal (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Wheelchair
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I just got my hands on an electric wheelchair for $20... any ideas? Has anyone interfaced a wheelchair to a handyboard before? I'm not sure if I want people riding on it, but I'm thinking I can mount a vacuum cleaner under it or something ;-) -phil (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Educational industrial robot
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Dear Handy Board list member: I am looking for an industrial robot built for education purposes. I know that some place there is a company building them but I lost their address. Thanking you in advance, I remain Augusto Bahia E-mail (...) (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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| | Re: proximity sensors
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for most of your handyboard micromouse needs go to (URL) (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: proximity sensors
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Dennis I got this back from that URL: (URL) Terry King ...In The Woods In Vermont (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: proximity sensors
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(...) Well, just on the subject of proximity detectors, I have a couple of projects on my web page that use IR LEDs to do proximity detection. I have the code for the PIC based solution posted and a couple of different circuits, including one for (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | proximity sensors
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hello, I am a fourth year EE student at the University of British Columbia. For my team project, we have to construct a robot which is able to learn a maze and then find the quickest way to navigate through it. I was thinking of only use infrared (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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One manufacturer of such a device is Fascinating Electronics of Oregon. They make a device that hooks to your serial port, you send it "commands" and it answers. The board has a/d inputs digital inputs and outputs a relay output, etc. It works by (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Debugging the memory circuit
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Ed -- there is an old utility, mon.exe, that might work. it's at ftp://cher.media.mit...os/mon.exe there's a cmd line flag to put it in extended memory mode. fred In your message you said: (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Debugging the memory circuit
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Thanks Fred, Yes, we have several working ones that download and boot just fine. In fact we're going ahead with these, but it means we don't have 1 bot per student. Since the download appears to work, and just the boot does not, I'm stumped. It's (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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Re: Parallel Port... if you want to see how to get 8 input bits, all straightened out, see: (URL) is also a program called SEEBITS that allows you to easily see all the input bits and set the output bits on and off. I am working on a "Parallel Port (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Handy Board list now a LUGNET newsgroup
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The tail end of my message got cut off. All I wanted to say was, "I think it'll be worth it. Yours, Fred" :-) BTW, one nice feature of LUGNET over handyboard@media is that messages get distributed a LOT faster when they come from LUGNET. Fred (...) (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Handy Board list now a LUGNET newsgroup
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Dear all, As announced, the Handy Board mailing list is now also a LUGNET (LEGO Users Group Network) newsgroup. What does this mean to you? It depends; if you are lazy, it can have no effect at all (maybe this is what you want :-). Or, if you are (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Debugging the memory circuit
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Hi Ed -- it *could* be that the desktop you're using isn't set up right to download to the HB's. do you have a known good HB you can use to test the download? alternately, there are some serial line debug instructions at (...) does not boot (...) (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...? [DAT]
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I am currently using my parallel port for the same application. I am not sure how specific your question was, but the output voltage is 5Vdc. However, remember that this is a logic level which means it will not give not give you more than ~20mA ( I (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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| | HandyBoard and Jini
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Hi Has anyone tried Jini on HandyBoard? If so, Can anyone send the links for those websites ? Thanks Kalyan Mulampaka Software Engineer e Information Services ___...___ (25 years ago, 14-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Java VM - Beta2
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wow,i've just had a look at the site and I have to say it sounds very good. When I get some holidays I'll have a look at porting some ic code across and see what I can make happen :-) Adam ----- Original Message ----- From: Peter Gasparik (...) (25 years ago, 14-Sep-99, to lugnet.robotics.handyboard)
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| | Java VM - Beta2
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For those who are interested, the Java VM Beta 2 has been released. Major improvements include: - garbage collection - floating point - demo applications for HB with and without expansion board (URL) (25 years ago, 14-Sep-99, to lugnet.robotics.handyboard)
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