Author Topic: A lot of repeating component structures  (Read 6196 times)

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Offline obiwanjacobi

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A lot of repeating component structures
« on: June 03, 2012, 05:20:07 pm »
Hi

I'm building an audio matrix. The circuit consists of 3 main building blocks: the input buffer, the output buffer and an audio switch. I just need a lot of them.

Is there a way to draw the schematic for it without doing the actual copy-pasting yourself. I'm thinking if there was a way to define a module and I could repeat that module...

Any help is most appreciated.
Marc
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Offline andersendr

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Re: A lot of repeating component structures
« Reply #1 on: June 05, 2012, 12:29:38 am »
Marc, You could create the consist of parts as one library item.  Then when you add that item to your schematic you will get all the parts for that block.  The only downside is that I am not sure if you will be able to move the footprints of the individual parts within that library item when it is placed on your PCB without going back and editing that library item.  I have never tried this so I am not sure.  Hope that helps.
 

Offline obiwanjacobi

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Re: A lot of repeating component structures
« Reply #2 on: June 11, 2012, 03:21:36 pm »
Could you give me a hint how to do that?  :-\

I am not very Eagle-fluent  ;D

BTW: I'm running Eagle 6.0.0.0 Light (free version).
« Last Edit: June 11, 2012, 03:24:43 pm by obiwanjacobi »
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Offline 8086

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Offline obiwanjacobi

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Re: A lot of repeating component structures
« Reply #4 on: June 11, 2012, 06:27:50 pm »
http://www.instructables.com/id/How-to-make-a-custom-library-part-in-Eagle-CAD-too/

I was under the impression that a 'consists of' part is not just another library part.
If it is, I can not find a way to draw existing symbols on there...
I can do Add Symbol which brings up an empty symbol dialog but I see no way to import from other libraries...
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Offline 8086

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Re: A lot of repeating component structures
« Reply #5 on: June 11, 2012, 06:33:01 pm »
I think you can open the part you want from it's library and copy/paste it into your library part
 

Offline andersendr

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Re: A lot of repeating component structures
« Reply #6 on: June 12, 2012, 01:33:15 am »
Well basically you just add multiple parts/drawings/schematic symbol/PCB footprints to one library item. 
 

Offline obiwanjacobi

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Re: A lot of repeating component structures
« Reply #7 on: June 13, 2012, 02:47:19 pm »
Overwhelming ...  :-\

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Offline david77

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Re: A lot of repeating component structures
« Reply #8 on: June 20, 2012, 12:59:01 pm »
Looks like fun  ;D.

Are all those IC's op-amps or bilateral switches or both?
Obviously I don't know what you want to do exactly and I don't know your circuit but I have a feeling you may be overdoing it a bit there... No criticism, just saying  ;).
 

Offline obiwanjacobi

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Re: A lot of repeating component structures
« Reply #9 on: June 20, 2012, 02:31:20 pm »
The 8-pins are the opamps ( 8 ). The bulk is 4066 (64) and some 4094 shift regs ( 8 ). The audio switch has 2 resistors per 4066 IC the rest of the R's and C's is for the input and output buffer opamps, oh and bypass caps of course, one for each IC...

I scaled down the schematic to a 4x4 audio matrix which still is a lot but manageable. I though I first get some experience with the layout and build a 8x8 later on. That and my free Eagle version does not allow me to layout such a big board. I'm thinking of switching to SMD to make the board smaller. I always stayed away from SMD, but last week I hand-soldered my first SMD IC - a 10 pin tiny uMax package - which was not half the trouble I thought it would be...
« Last Edit: June 20, 2012, 02:35:49 pm by obiwanjacobi »
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Offline david77

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Re: A lot of repeating component structures
« Reply #10 on: June 20, 2012, 02:40:16 pm »
Ah, I didn't see the DIP 8 packages under all that mess at first.

I'm in the process of designing a 12x5 audio matrix at the moment, only I'm using mechanical switches. That's what threw me looking at all those IC's  :).
 

Offline obiwanjacobi

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Re: A lot of repeating component structures
« Reply #11 on: June 20, 2012, 02:55:46 pm »
Ah, I didn't see the DIP 8 packages under all that mess at first.

Hehehe  :o  8)

Are you using relays? Wow, that's 60 relays, isn't that very expensive??

Here you can see my schematic.
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Offline david77

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Re: A lot of repeating component structures
« Reply #12 on: June 20, 2012, 03:00:06 pm »
No, no! That would break the bank. I've got a batch of these old fashioned switches, like they were used in radios or test gear:



Got them cheap on a local flea market.
I thought about 4066's and digital control, but decided against it.

Looking at your circuit that's exactly what I plan to do, not that there're many different ways of doing it  ;).
I want to use this for my HiFi setup at home - I'm sick of crawling behind the racks through dust, cables and cobb webs to change plugs.
« Last Edit: June 20, 2012, 03:12:54 pm by david77 »
 


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