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| are drawing normal schematics a dying art? |
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| Berni:
Making a good readable schematic is an art in itself. But its difficult to write a strict standard in how to draw schematics in such a way. Sure there are some general guidelines of power on top, ground on bottom, signal flow from left to right..etc But things are not always so black and white. Different ways of laying things out is needed depending on the scenario. Sure a schematic with all net labels connecting stuff is bad, but then again having a schematic where everything is a line with no net labels can be even worse. Things with large numbers of nets can turn into a spaghetti maze that you have to chase around with your finger to even find what goes where. It's about using sane judgement in where to use net labels and where to run lines. Or when lines are used there are various ways of grouping them together that can make it much easier to follow, but there is again no solid rule on how to do it. Part of it is definitely the rapid pace of development these days. In the 70s the design of a piece of electronics involved a large team of people that worked on it for pretty large time frames. They all needed to understand each others documentation. Even more importantly the schematic being turned into a PCB was read by a human being, not a computer where the CAD tool simply turns the schematic into a netlist. So the person drawing a nice schematic actually saved a good deal of work for the 2nd person that had to turn it into a PCB. Hand drawing a nice professional looking schematic is also a lot of work, so the person drawing it puts a lot more thought into the layout (like sketching it out first) so that once they do go for the final clean drawing they will get it right first try. |
| james_s:
--- Quote from: m3vuv on November 15, 2021, 12:49:51 pm ---looking at some circuit designs online it looks to me like a lot of ppl are using this Fritzing thing,i find them horrid,look like sommat out of a 2yr olds scribbleing book,whats ppls views on it?,give me a proper schematic any day!!. --- End quote --- Fritzing diagrams remind me a lot of your grammar, I can barely read it. I can't stand Fritzing diagrams myself but they are really only used by beginners, mostly maker types, any real engineer and most mid range hobbyists use proper schematics, they haven't gone anywhere. |
| Miyuki:
Oh, thanks, I did not know it is called Fritzing It looks like a great way to explain to non-technical people where to put what wire :-+ It is a totally different thing that schematics |
| VK3DRB:
--- Quote from: Berni on November 16, 2021, 08:17:20 am ---Making a good readable schematic is an art in itself. Sure a schematic with all net labels connecting stuff is bad, but then again having a schematic where everything is a line with no net labels can be even worse. Things with large numbers of nets can turn into a spaghetti maze that you have to chase around with your finger to even find what goes where. --- End quote --- Altium allows you to you harnesses in schematics. Harnesses are OK if used wisely and the engineer does not go over-board ('scuse the pun). I have seen harnesses grouping harnesses grouping harnesses! And with harnesses' signal names changing between sheets. The engineer who created it made such a mess, there were Altium harness errors he left in the design, then he left the company. I ended up fixing the errors, and in doing so I found two instances where where one digital output was driving two GPIO digital inputs in a processor. I do use harnesses myself but rarely. Altium made a mess of harnesses in my opinion. Changes to harness names is not trivial. I think that engineer is like some sharp coders who make a point of writing pointers to arrays of pointers which point to pointers so that the appointed engineer points out he doesn't see the point. |
| amyk:
--- Quote from: T3sl4co1l on November 15, 2021, 11:43:45 pm --- --- Quote from: ebclr on November 15, 2021, 11:18:05 pm ---The old legible and structural view schematics is an art, Today's schematics are like a component datasheet, just show pin names and numbers only, no connection, no structural view, no nothing. Even power isn't there, It's pure garbage. Or we are old, and the new generation just like that #$%% --- End quote --- To be fair, the old generation never had to deal with 2,000 pin vacuum tubes. Modern problems require modern solutions. :) Tim --- End quote --- For laptop schematics and such where components have hundreds or thousands of pins, I can see the utility. But using that style for something much simpler is adding complexity where there shouldn't be any. When both ends of a net are on the same page, try to connect them with an actual wire. |
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