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 | | blown L293's
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| Bill, I think the moral of the story is: DO NOt use 3v motors with the Handy Board. They draw too much current. Use motors rated at least 6v, even that can be a problem. I should put this in the manual somewhere... See (URL) to buy more L293's. (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Ooops.
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| It's unlikely you killed the MCU, there are 1k resistors in series with the RxD and TxD lines. Go to the assembly manual, and run through the series of tests that verify proper operation of the Interface/Charger Board. (URL) your message you said: (...) (27 years ago, 17-Nov-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Bootstrap download mode
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| see if you can get it to go into download mode when you don't have the phone cable plugged in. if this works, then you have some kind of probl with your serial connection. make sure you have a normal modem cable, and a telephone style RJ11 cable (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: using external batteries
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| the label on the diagram says "cut motor trace here" with an arrow that points to a dark band. if you look at your HB, it won't have a dark band. that's where you need to cut. slice through the green-coated trace where that dark band on the picture (...) (26 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: encoders and analog ports
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| are you using the .icb version of the analog driver? make sure you are using the latest set of libraries for the HB from the web site. i'm just guessing at this point. next follow up, please provide a listing of exactly what lib files are being (...) (25 years ago, 10-Jul-99, 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: The Oakland
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| Awesome!!! I posted a little while ago regarding innovative designs, and this one definately qualifies. I *love* the use of the boat parts for this MOC. Not only do we see boat parts here, we also see them used a la SNOT! Overall a great design, and (...) (20 years ago, 19-Apr-04, to lugnet.space)
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fred
(score: 1.028)
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| | Re: Pic16c84 programming with Handyboard
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| David -- The MAX662 chip I used on the last beta rev was not the magic bullet I hoped. Not only is there possibly the rise time problem you mention, but when the thing turns off, it outputs 5v. The PIC needs a swing from 0v to 12v to enter program (...) (28 years ago, 5-Nov-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Sony IR decoding routine!
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| ic is very sensitive to linefeed termination in icb files. if you are runnnin on an ms-dos system, i believe it requires unix style (e.g., ctrl-j) termination, rather than ms-dos ctrl-m ctrl-j style. try removing the ctrl-m's from your copy of the (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: sony-ir.icb problem
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| (...) First, check the FAQ before posting! One solution to problems with ICB files are already answered in: (URL) is a copy of the answer for your convenience. If this does not solve your problem please follow up. -Fred I'M USING MS-DOS AND IC WON'T (...) (28 years ago, 2-May-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: addendum
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| Ahah. due to the arcane way printing to the lcd screen is implemented, all interrupts must be turned off each time a character is written to the lcd. apparently this conflicts with the servo routines. i'll look into it and see if there is a (...) (28 years ago, 21-Jan-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Neglection of U8 on Parts List
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| Bill is right, U8 is a '374. Peter, where exactly are you looking that you don't see U8 listed? It's there at (URL) post URLs if you're trying to help me maintain the site. Thanks. -Fred In your message you said: (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: error with freeware DL under Windows 95
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| The recommended downloader when running Windows 95 is HBDL.EXE, *not* DL.EXE. HBDL is available from the HB Software Resources page. (This is pretty clearly stated in the HB Tech Ref... if you don't have a copy you should get it, from the HB Tech (...) (27 years ago, 26-Apr-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: free memory
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| I don't remember exactly, but the memory map for IC is something like: pcode itself: 8K used user compiled code + global program data: 16K available user process stacks and runtime locals: 8K available ---...--- 32K total memory this is ball park. (...) (27 years ago, 26-Aug-97, 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: How to use the addition analog port ?
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| these aren't actually additional ports. if you look at the PCB wiring you'll see that they're just connected to regular inputs 0-3. these extra connectors will be used by the expansion board. please look for an official notice regarding the exp (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: HB Expansion kit
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| (...) yes. this was omitted from the assem instrcts and i've added it now. (...) look at the parts list for things that are referred to as "xx-pin male header". these have a part number; e.g., J3, a 14-pin male header. look for J3 on the PCB (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Windows 6811 downloader
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| is now available, contributed by Vadim Gerasimov, an MIT Media Lab student. This will be a boon to users who have been struggling getting the fundamentally broken DLM to work. Get it from the software resources page of the HB web site ((URL) (29 years ago, 8-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: No heartbeat when switch on
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| did you try reloading the operating program, pcode_hb.s19? use hbdl on windows or 6811 downloader mcl on macintosh. this program (pcode_hb.s19) must be resident on the HB at all times. it sounds like for whatever reason it got corrupted. this isn't (...) (25 years ago, 13-Jul-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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