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 | | 6.8 nF Capacitor
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| Can any body tell me if a 6.6nF capacitor will do to replace the 6.8nF in the IR Transmission circuit (Fred?) ?. Thanks in advance. John Hatton (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
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fred
(score: 0.175)
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| | Re: handy board troubles...
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| gary -- it's an interesting bug. as you say you've got two 2-dim arrays, i can surmise that you're using Newton Lab's version of IC. In which case, they'd be the ones to address this problem. re: mailing list, it's now administered through LUGNET. (...) (25 years ago, 16-Apr-00, to lugnet.robotics.handyboard)
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fred
(score: 0.175)
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| | Re: Age limitations
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| (...) as (...) No I did read the whole message. What I'm trying to do is get you to re- examine the reasoning that led to the feeling the group had to be adult only. So far, the only issues which I can accept as legitimate which have been raised are (...) (24 years ago, 4-Jul-00, to lugnet.org.us, lugnet.org.us.nelug)
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fred
(score: 0.175)
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fred
(score: 0.175)
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| | Re: Motors spinning at startup
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| I have been having the same motors spinning on powerup "problem" with my Handyboard. I tried various capacitor combinations on my modified servo motors to no effect. Fred M. finally provided the answer: (...) In short, there is nothing wrong with (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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| | Re: Site change suggestion
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| In lugnet.cad.dev.org.ldraw, Travis Cobbs writes: <snip> Great thread. A few points off the top of my head, no order... <user hat on> Fred Gloeckner's comments aside (let's face it, he's way smarter than most of us at using these tools) LEdit is (...) (24 years ago, 29-Jun-00, to lugnet.cad.dev.org.ldraw)
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fred
(score: 0.174)
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| | sonar and overflow
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| Greetings all, Has anyone managed to work out some code which checks the overflow bit for the counter used in the polaroid sonar code? At the moment mine distance readings seem to be maxing out around 1.5m or so, and I'm not sure if it's the timer (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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| | minor update to new random.c
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| Field testing in a real class is the best way to get bugs out of code :-) My summer robotics class discovered a couple of "misfeatures" in my new random.c pseudo-random number generator library: (1) the rndrangei(), rndrangel(), and rnd() functions (...) (24 years ago, 28-Jun-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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| | Re: Motor Drivers
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| 300 mA shouldn't be a problem. are your main batteries low? alternately, are you sure it's 300 mA at 9v? can you measure it somehow. fred In your message you said: (...) (25 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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| | Re: 5V of trouble
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| those two things together strongly suggest that your crystal isn't running. any chance you can get a scope or logic probe to verify this -- measure the E clock output of the 'hc11 (pin 5). also, check that you've properly installed a 2.2 megaohm (...) (25 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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fred
(score: 0.174)
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| | Re: Diodes for Sonar Assembly
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| yes, this is fine. the 5404s have a higher voltage rating, so they're "better". the 5401's are specified because they'd be cheaper and are already more than adequate. fred In your message you said: (...) I (...) e (...) (25 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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fred
(score: 0.174)
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| | Re: Does anybody actually know Mr Justus?
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| (...) I think we're in agreement. We (the people of lugnet) would argue that it's a different piece. But the people at lego may see it differently. Obviously, this piece wouldn't work with the other pieces designed for use with the medium slope (...) (24 years ago, 21-Jun-00, to lugnet.lego.direct)
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fred
(score: 0.174)
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fred
(score: 0.173)
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fred
(score: 0.173)
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fred
(score: 0.173)
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| | Re: Alternate Sources for Pneumatic Tubing?
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| The best I've found for replacement tubing is from a hobby shop that carries model air planes (the really big ones). The fuel tubing they use is perfect, bring a pneumatic cylinder w/you for an exact fit. They have "T"s too!!! Tube isn't cheap tho, (...) (25 years ago, 11-Mar-00, to lugnet.technic)
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fred
(score: 0.173)
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| | Re: L3Lab is so awesome!
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| In lugnet.cad, John VanZwieten writes: I must have been thinking of TL2Lab :-) (...) Is there a program called T2Lab? If yes, what does it do? I've noticred that Ldraw is lomited in that there is pretty much only one OS that will run it, and include (...) (25 years ago, 21-Apr-00, to lugnet.cad)
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fred
(score: 0.173)
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| | Re: L3P won't work on my computer
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| (...) to (...) should be no problem with the command line stuff. The only thing I can think of is that the set LDRAWDIR=(wherever ldraw is located) doesn't work. I put it in the autoexec, but still, l3p just shows the "help" message, or the commands (...) (25 years ago, 21-Apr-00, to lugnet.cad)
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fred
(score: 0.173)
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| | Re: resistor pull-up help!
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| basically, yes. the inputs from the expansion board feed into the inputs on the main board. if you need a high impedance input, your best bet is to cut a trace on the main board and use one of those inputs. the exp bd takes over main board inputs 0 (...) (25 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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fred
(score: 0.173)
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