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 | | Re: Handyboard Expansion Board
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| Actually, unless Fred has changed the way the sensor connectors work he was quite clever in that the spacing of the I/O connectors is exactly dip switch width. Basically you can plug in a DIP switch into the I/O header and get as many switches as (...) (27 years ago, 22-Aug-97, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: 68HC811E2 CONFIG Problem
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| Hi Fred, thanks for the answer. Oh yes I try'd all, that is possible with the pcbug342 but without success. A very good tip comes now from Adrian Susianto about the "64 cycles" after reset (thanks Adrian). I remember, that I read about this in a (...) (27 years ago, 2-Apr-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: HB Memory...
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| This is what Fred Martin wrote in a earlier message to this mail list. This is the approximate breakdown of the HB memory space. User program object code + user global variables: 16320 bytes available Runtime pcode OS: 7936 bytes Used stack space (...) (26 years ago, 17-Jun-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | data acquisition
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| this message is especially for Fred Martin: is there any way to retrieve a large integer array (1000 or so elements) from the handyboards memory, and save it in a file on the PC? thank you. Justin D. Gullotta.. , Engineer, Rensselaer Polytechnic (...) (26 years ago, 5-Jul-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | The HandyBoard Mailing List
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| Howdy Fred and all others, I still enjoy the HandyBoard mailing-list a lot. So much that I would like some easier way to use it. Is there a reason this group is not on a news server (too)? In my humble opinion this would allow faster responses. And (...) (26 years ago, 12-Oct-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: motor port problem
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| hi Fred, Why there is 2 holes each for the positive and negative supply on the pin jack (J13)? I thought that just insert one hole each for the positive and negative supply only. I need to know why the J13 is designed for 1x4 holes before i decide (...) (26 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Replacing L293D with L298H
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| Hi Fred and others, I very desperate to debug the problem that took place in my HD. When I download the P_code, it is successfully downloaded. However, when the next instruction ask to reset the board, no words of sentence appear on the LCD. Only 16 (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Handyboard power supply
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| Hi Fred and other, I intend to use grandcell rechargable batteries to supply the HD. Each battery is 1.5V . If I supply 7 batteries of total 10.5V to the HD , is there any problem ? rgds, phillip (26 years ago, 5-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: Expansion Board Files
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| Fred; Here is the copy of expsens,c---...--- At the lines in the hb was having problems with there was a small square figure at the starting point outside the comment*\ and\* for some reason. Any one else having a problem????? Thanks Terry ---...--- (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: Re: R4 Resistor
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| "Fred G. Martin" schrieb: (...) i have had the same problem, so i havent installed the ir-circuit yet. the mistake is in "The Handy Board Technical Reference" (July 12, 1998) PDF File ... On page 46 ( i am not sure) is a Part Listing: it says : .... (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Noise on the handy board
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| Fred and handyboard experts, I have assembled two handyboards and I am now helping 15 other people build theirs at San Jose State University. I found a problem on the first two I build that I belive causes the Sharp GP2D02 not to work. The school (...) (25 years ago, 31-Jul-99, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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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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fred
(score: 1.004)
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| | More Motor Controller Question
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| Thanks Fred. That got me going in the right direction. But...... When I poke a value into $7000 I can see the corresponding input pin on the l293 react. But it will not stay in the position that I set it to. It will return back to the initial state (...) (25 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: Fred Meyer Clearance
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| In lugnet.loc.us.ut, Mike Quesnell writes: --snip-- (...) WHAAAT?? the shopko in layton had those for $9.99 (i picked one up for jeremy but they are all gone now). by the way, thanks for the tips, mike! ..joseph g (25 years ago, 8-Feb-00, to lugnet.loc.us.ut)
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fred
(score: 1.004)
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| | Re: Overcharged battery?
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| (...) Hi Fred, I don't claim to be an expert on these, but what I have read leads me to believe that this may damage the cells if left on too long. For common NiCds (800mah AA' for instance) C/10 should really be considered a fast charge and not a (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Re: Bendible Objects?
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| Thanks, Fred! That was fast! :-o Putting .emacs in C:\ fixed the problem (I even see the font in colors :-)). Now onto bending a piece of straw/hose from my Mindstorms Vision Command Set! BTW: d'you have any idea on how long (ldraw units) this part (...) (23 years ago, 18-Nov-01, to lugnet.cad.dat.parts)
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fred
(score: 1.004)
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| | Re: Over Charging
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| Fred, We had the same problem and traced it to the resistor. We can try the ZAP mode, but for future reference we would like to know the value you used to replace the 47 Ohm 1/2 watt resistor. Any chance we could get that information? Thanks, Dan (...) (22 years ago, 11-Sep-02, to lugnet.robotics.handyboard)
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fred
(score: 1.004)
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| | Red tub is at Fred Meyers tomorrow!
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| The ad shows the red tub, 4400 for $9.99 tomorrow. Price is only good for 5-11AM. They also have all Lego 25% off at this time period. -- Rosemary Regner, PE R Squared Digital Media rose@r2dm.com www.r2dm.com (21 years ago, 27-Nov-03, to lugnet.market.shopping)
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fred
(score: 1.004)
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fred
(score: 1.004)
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fred
(score: 1.004)
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