Subject:
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Re: LEGO Computers & Logic Gates
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 16 Mar 2004 19:20:48 GMT
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Viewed:
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1861 times
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> > I've tried to do it mechanically. So far I've made NOT, AND, NAND, OR,
> > NOR, a basic NAND latch (flip-flop) and a clocked NAND latch.
> >
> > Full details can be found via the LEGO link at my webpage:
> >
> > http://www.goldfish.org.uk
>
> That is cool Martin! The only thing I'd probably try is doing a NOT gate with
> just a lever, like a 3L liftarm. May reduce backlash a little.
>
> It would be interesting to investigate a way to make them with a +V input of
> some kind - maybe a motor somehow - that does the switching of the output,
> similar to the compressor input of the pneumatic models. If that could be
> done, it might make much larger circuits viable.
Thanks for the comments. The 3L liftarm is a good idea. I did originally
try something similar, but went with the rack and pinion system instead in
the end.
At the moment I'm trying to simplify the gates to the extent that I don't need
any cogs at all. If I get that sorted, then the problem of gear slippage
vanishes and we're back to developing only some sort amplifier that you and
other have suggested. Although I'm not exactly sure of what you mean by
using a motor to get a +V input?
Cheers,
Martin
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Message has 2 Replies:
 | | Re: LEGO Computers & Logic Gates
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| (...) Oh that was just my way of saying "amplifier" LOL. Getting an external power source (+V is electronics talk) to power the output rather than just the input. ROSCO (20 years ago, 16-Mar-04, to lugnet.technic)
| | | Re: LEGO Computers & Logic Gates
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| (...) This is the same thing as the amplification issue mentioned in other posts. In our pneumatic gates, we can sometimes use pressure directly from the pumps as inputs to pneumatic switches, thus providing the "amplification" people are talking (...) (20 years ago, 16-Mar-04, to lugnet.technic)
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Message is in Reply To:
| | Re: LEGO Computers & Logic Gates
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| (...) just a lever, like a 3L liftarm. May reduce backlash a little. It would be interesting to investigate a way to make them with a +V input of some kind - maybe a motor somehow - that does the switching of the output, similar to the compressor (...) (20 years ago, 14-Mar-04, to lugnet.technic)
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