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 | | Re: IC on Tcomp?
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| Good question. In principle, the answer is yes. The base requirements for running IC are the 6811, 32K ram, and a serial port. In practice, no one has modified the pcode for a "generic" system configuration. One tricky part would be disabling the (...) (28 years ago, 17-Sep-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Assembly language and the handyboard
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| (...) Ed -- are you referring here to IC's mechanism for linking to assembly language files, the "IC Binary" interface? It's really not too hard to use, and allows users to create assembly language programs that are callable from IC using the C (...) (28 years ago, 27-Oct-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Downloading problems
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| The memory circuit is probably flaky, or, you zapped a 6811 address line output. If you haven't already tried, swap the 6811 with a known good one. If that doesn't work, examine the ram chip addr, data bus, and select signals with a logic probe when (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Help with member profile / password
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| (...) Frank- Thanks for the reply! In my opinion, the LUGNET rules for passwords are the most restrictive that I have ever encountered (including password selection for classified military computer systems). Granted, the LUGNET rules and password (...) (20 years ago, 11-Jun-04, to lugnet.admin.general)
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fred
(score: 1.028)
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| | Re: Motor control
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| (...) Yes, and speed control is built in to the Interactive C motor function. motor(0, 100) turns on motor 0 at full speed; motor(0, 50) is half speed, etc. While we're on the topic, I am considering changing the speed argument, because in actuality (...) (29 years ago, 16-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Questions, questions, questions......
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| (...) The Handy is like the 6.270; both have dig out latches going to the motors. The RW drives the motor ctrl pins directly. A re-write of the system PWM routines could provide finer than 8 levels of control, even w/o needing HW timer lines. (...) (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | 6811 Downloader MCL, version 1.1
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| hi cappy & others (sorry non-mac people), i've put up a revision of the Mac 6811 Downloader MCL. this version checks that everything's copacetic before dumping the .s19 file into external RAM. in other words, it checks that the desktop is properly (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | RE: any video of LEGO fire fighting bots?
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| Joe, Certainly there have been instances of lego robots in the contest. The department at Trinity College sponsoring the competition sells videos of the competition each year. I have several of those from years long past. I bought them from the (...) (17 years ago, 5-Dec-07, to lugnet.robotics)
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fred
(score: 1.028)
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| | Re: download problems
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| The motor state is insignificant before the board has booted. I.e., the fact the motors are on the red direction means nothing; it's just the random state of the motor output latch when the board turns on without a program. The LCD screen should not (...) (26 years ago, 3-Jun-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: voice synthesis
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| (...) [snip] RC Systems, Inc. makes a low-cost ASCII to voice board that provides far better performance than the now-discontinued General Instrument speech chip set many are familiar with. The RC Systems product is a small board with a CPU and a (...) (27 years ago, 1-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: HB assembly errors.
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| (...) OK, this indicates a particular problem. If the BATT LED is fully lit, it means that system voltage is less than 4.5v. Typically, if you are powering your system from the SIB, this indicates some kind of board short. I would remomve all (...) (28 years ago, 19-Oct-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | Re: 600 mA Limit
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| (...) from the L293D ground? yes, this would be correct. Well, there would be 2.4 amps running through the chip's power source, into the motors, and into ground. ...totaling 4.8 A runniing throught the entire chip fro m a power dissipation (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: 6 servos
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| This multiple servos thing is reaching FAQ status, and here is how I plan to deal with it. Scott Edwards Electronics sells a cheap ($30 kit, $45 assembled) servo board that drives 8 servos. You can gang them to get 32 servos or even more. The boards (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: trouble with memory
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| well, the dim flashing of either yellow charge LEDs should not worry you. all this means is that the Handy Board is drawing some power. if you have the wall adapter plugged into the Interface/Charger board, simply switch it to "Zap" mode. now, onto (...) (27 years ago, 11-Dec-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Sonar questions (technical ones!)
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| Good questions!! (...) The polaroid number/widely quoted number is 0.9 MILLISECONDS PER FOOT -- or 1.11 ft/ms. hence the conversion matches! I think also I have this wrong on my HB sonar page! This confused me for a while too. (...) Yes, this is (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Assembling the HandyBoard
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| (...) The whole issue of null (inverted) connections vs. straight-through is incredibly confusing, because you must take into account the gender of the connector (male pins or female pin sockets) in determining whether it is a null connection. Start (...) (28 years ago, 27-Dec-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | HB web site design changes
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| Hi all, Those of you running Internet Explorer on Windows 95 or NT have probably noticed that the table of links running down the left column is hard to read -- light blue (or purple) links on a medium blue background. Those links are supposed to be (...) (27 years ago, 19-Jan-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | re: magnetic card readers
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| dear german, i think what's going on is that you are asking very open-ended questions that require a lot of work to compose a helpful response. if i remember right, your earlier question was with regard to networking using the spi port of long (...) (27 years ago, 10-Aug-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Mac DL problems
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| ok, i think you've established that the hardware is working properly. the fact that you can get IC to boot and talk to the board is strong proof of that. the zterm test demonstrates that the mac can send chars out; the IC example proves (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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