Subject:
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Re: Pneumatic logic diagrams
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 9 Aug 2005 19:13:08 GMT
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Viewed:
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6931 times
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In lugnet.technic, danny staple <orionrobots@gmail.com> wrote:
>
> Hi People,
>
> I really appretiate the circuits Mark has put up, they are very
> instructive, and between you you guys are taking Lego pneumatics
> before I have seen it go before. But - in your diagrams, you do not
> label the components - which make them hard to discuss or follow.
>
> If you have seen electronic circuits, its not unusual to apply labels
> like c1, c2 for capacitors, r1, r2 for resistors and such.
>
> So can I propose using the following labels?
>
> V1/V2 for the valves
> cp1 for the compressor pump
> cy1/cy2 for the cylinders (regardless of size)
>
> The other suggestion is, so you can make it clear where the
> compressor/intake is, place the net for this along the bottom or top
> of the circuit (again like you would do with power rails in an
> electronic circuit). It adds an additional level of clarity.
>
> I have a few thoughts on the operation of these circuits which I am
> gathering, but I thought this would benefit you. It would be great if
> diagrams like Marks could be drawn for some of the other devices too -
> as they really do aid understanding.
>
> Cheers
> Danny
> --
> http://orionrobots.co.uk - Building robots and communities
Thanks for taking a look at clarity of drawings. I have made some improvements
since I drew that one - I now use thinner lines for the straight bits to
represent flex tube. This reduces the balloon effect in the model, so its use
is desirable wherever possible.
I usually refer to cylinders and switches by their function, so the P+P robot
has grab, wrist, extension and elbow. Numbering them would help, though I have
to find a way to put a big enough number in a standard place on each switch. I
generally refer to switch ports as left, middle and right, as if looking towards
the port side of the switch (is the smooth side the starboard side :-) )
I represent the air supply by the small compressor pump, notable by its single
port at the bottom. I try to avoid too many crossovers of lines, just like in
circuit diagrams.
Visio has been a great help, and I now have a template of the parts to use.
I prefer to express the logic in '0's and '1's, since it is a finite state
machine. My designs intend to move only one set of cylinders at once, so as to
avoid race conditions or lock-up states.
Look out for more diagrams soon! They do take a while to draw though!
Mark
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Message is in Reply To:
 | | Re: Classic timing circuits and XOR gates (long)
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| Hi People, I really appretiate the circuits Mark has put up, they are very instructive, and between you you guys are taking Lego pneumatics before I have seen it go before. But - in your diagrams, you do not label the components - which make them (...) (21 years ago, 9-Aug-05, to lugnet.technic)
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