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A beginners question

donrecardo

Hi , I have just started trying to learn Eagle .

I know what I want to do but dont know the correct terminology to describe it so please forgive me describing it in my own worrds .

 

On schematics I can place my components and run wires from pin to pin as needed , but that doesnt always look good

and its certainly not the way I have seen other schematics done  .

Most schematics I have seen will have all the sections of the circuit drawn as sub assemblies , for instance , all the decoupling caps are

often shown in one block with a little " tag" saying VCC and GND on them ( I dont know the correct term for this tag or label or whatever)

but I know this means they are connected to the VCC and GND nets

 

My design has 3 ICs each with 16  outputs  to drive 16 RGB leds , one IC for each colour .The outputs will go to connectors on the edge of the board where the LED strings will connect up

but I dont want to show those connections as wires tangled all over the schematic  I want to put a "tag" on each IC output  like Red1 , Red2 ,,,,,,,, Red16

Green1, Green2,,,,,,,Green16 etc.  and then matching tags will be on the connectors that they match up to drawn on a different part of the schematic

 

Doing the " tags" for Vcc , Gnd etc is easy , they are in the supply library , but how do I place a Tags that I can name myself such as Red1 etc 

 

I suppose if I knew the correct terminology for " Tags" I would see it in the menu and not need to ask for help

 

Cheers

Don

  • On 02/10/13 17:54, Don Recardo wrote:

     

    Doing the " tags" for Vcc , Gnd etc is easy , they are in the supply

    library , but how do I place a Tags that I can name myself such as Red1

    etc

     

    I suppose if I knew the correct terminology for " Tags" I would see it

    in the menu and not need to ask for help

     

     

    In Eagle, unlike some PCB-CAD tools, you don't have to place "tags"

    (sometimes called IOPORTs or off-sheet-connectors) to do this. Instead,

    you simply assign a name to the net. All nets (green lines) with the

    same name are inherently the same net. To make it clear to the reader,

    you place a LABEL on each net section. These labels always show the name

    of the net, so if you place one on a newly created "unnamed" net

    (actually all nets are always named, but...) then it will show N$27 or

    similar.

     

    P.S. You said you ran "wires" between your components. You should not do

    that with the "wire" tool because what you want are "nets" placed using

    the "net" tool. The differences aren't that dramatic or obvious but the

    right tool will do the right thing (automatically stop at pins,

    automatically add junctions) where the wrong tool won't.

     

     

  • Its OK

     

    I worked it out by myself .  I clicked on " LABEL"  and then "XREF" and that seems to be what I needed

     

     

    Don

  • in reply to autodeskguest

    Sorry it seeme our posts crossed

     

    I had  meant to say use the net button not wires ( I saw that in a tutorial video ), but thanks for your reminding me

     

    It confirmed what I had found out to be right

     

     

    Cheers

    Don