Freeware electronics CAD

R

Renan

Hello,

I'm looking for a freeware CAD program to draw electronics circuits.
Anybody knows any such program?

Thanks.
 
R

Roger Johansson

Renan said:
I'm looking for a freeware CAD program to draw electronics circuits.
Anybody knows any such program?
Click to expand...

You probably need a spice program and the best is
LTSpice/SwitcherCAD III, here

http://www.linear.com/company/software.jsp

Others have given links to circuit board layout progs, if that is what
you want.

Normally you develop the circuit in a spice program, and that is also a
drawing program to draw circuits with. Later you may want to make a
circuit board, then you use a circuit board layout program, like Eagle.
 
D

Daniel Mandic

Roger said:
You probably need a spice program and the best is
LTSpice/SwitcherCAD III, here

http://www.linear.com/company/software.jsp

Others have given links to circuit board layout progs, if that is what
you want.

Normally you develop the circuit in a spice program, and that is also
a drawing program to draw circuits with. Later you may want to make a
circuit board, then you use a circuit board layout program, like
Eagle.
Click to expand...


I´ve got rid of Eagle. Their official (internet) ANTI MIcrosoft
outsays... I am not going to support such a company.
Well, one person (private)...that´s normal. But a serious company???
Flaming against MS with absolutely wrong arguments, at all!! ;-)

Not serious.



Yes, LTSpice is a very good freeware. I would suggest to bundle it with
'FREEPCB'

http://www.freepcb.com/home.html

the best Freeware Elektronic CAD I have ever seen. Better than Eagle
Shite (Eagle is too expensive and too weak programmed, due to weak and
coward programmers).

FreePCB is MOST RECOmmENDABLE!!!!!




Best Regards,

Daniel Mandic
 
D

Daniel Mandic

John said:
Cadsoft Eagle Layout Editor.
Freeware version limited to 4x3.2 inch size and 2 single layers.
More than ample for experimenters.
http://www.cadsoft.de/
J Free
Click to expand...



With that version you can only fart.



The Full Version is better. But FAR,
FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR,
FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR,
FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR, FAR,
FAR, FAR, FAR, away from FREEWARE.




Best Regards,

Daniel Mandic
 
R

Renan

At date 01 Jan 2006 23:12:06 GMT, Daniel Mandic ([email protected])
wrote in article <43b861c6$0$16883$91cee783
@newsreader01.highway.telekom.at>, for newsgroup alt.comp.freeware:

I´ve got rid of Eagle. Their official (internet) ANTI MIcrosoft
outsays... I am not going to support such a company.
Well, one person (private)...that´s normal. But a serious company???
Flaming against MS with absolutely wrong arguments, at all!! ;-)
Click to expand...

I don't see any "ANTI Microsft outsays" on their site.
Yes, LTSpice is a very good freeware. I would suggest to bundle it with
'FREEPCB'

http://www.freepcb.com/home.html

the best Freeware Elektronic CAD I have ever seen. Better than Eagle
Shite (Eagle is too expensive and too weak programmed, due to weak and
coward programmers).
Click to expand...

Will try. Thanks!
 
R

Roger Johansson

Renan said:
I will need both.
Thanks!
Click to expand...

I should be honest and tell you that I don't use LTSpice myself, the
interface is not intuitive enough. I prefer EWB version 5c. It has a
better interface but it doesn't have the speed and precision of
LTSpice. Real engineers see EWB as a toy, as some cheap crap, and the
pros would never use EWB.

But I am more interested in having fun than in creating very good
circuits. EWB is not freeware and it is not for sale anymore ;-).
Customers who bought the newer versions of EWB wanted a copy of EWB
5.0c together with the new program, because the new program was
useless, and the company gave them the old program for free if the
customer demanded it, but I doubt they are still doing that.

You need to train for half an hour to use LTSpice, EWB is very simple
to start using immediately. Things look like a normal workbench, you
drag out the oscilloscope on the work area to use it, use the controls
just like on a real oscilloscope, wires are made by drag-n-drop from
the contact points. Push the power button to give power to the circuit
and see what happens.

Later versions of Electronics Workbench are based on a new engine and
have had problems with many bugs. Nobody has ever produced a better
spice prog than EWB5c if we value the user interface highly.

If I ever need to design a serious and complicated circuit I will use
LTSpice as a complement, to check out what happens in a really good and
modern spice simulator.
If I really worked with electronics I would learn to use LTSpice.
 
D

Daniel Mandic

Roger said:
I should be honest and tell you that I don't use LTSpice myself, the
interface is not intuitive enough. I prefer EWB version 5c. It has a
better interface but it doesn't have the speed and precision of
LTSpice. Real engineers see EWB as a toy, as some cheap crap, and the
pros would never use EWB.
Click to expand...

That´s a Masterpiece of Electronic Software! Made in Germofornia :)))))
But I am more interested in having fun than in creating very good
circuits. EWB is not freeware and it is not for sale anymore ;-).
Customers who bought the newer versions of EWB wanted a copy of EWB
5.0c together with the new program, because the new program was
useless, and the company gave them the old program for free if the
customer demanded it, but I doubt they are still doing that.

You need to train for half an hour to use LTSpice, EWB is very simple
to start using immediately. Things look like a normal workbench, you
drag out the oscilloscope on the work area to use it, use the controls
just like on a real oscilloscope, wires are made by drag-n-drop from
the contact points. Push the power button to give power to the circuit
and see what happens.
Click to expand...

Great Group-support. Look YAHOO. LTSpice.
Later versions of Electronics Workbench are based on a new engine and
have had problems with many bugs. Nobody has ever produced a better
spice prog than EWB5c if we value the user interface highly.

If I ever need to design a serious and complicated circuit I will use
LTSpice as a complement, to check out what happens in a really good
and modern spice simulator.
If I really worked with electronics I would learn to use LTSpice.
Click to expand...


Yes, and its compatibility to FreePCB (1.3 now) makes it perfect. Just
export from LTSpice with Pads2000 Format and go on with a nice
partslist in FreePCB.


Although, FreePCB is difficult to understand (bez it´s so easy), but
when wir?ng starts.... what a plaeasure! Zooming in! CAD!!!
Great Program.



Kind Regards,

Daniel Mandic
 

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