Hi all,
Anyone got recommendations on any software that is free of charge for creating wiring diagrams for arduino circuits?
I was just going to download some and try them out, but thought I'd see if anyone was able to recommend any first
Thanks!
LTSpice is professional, free and not only allows you to make high quality schematic diagrams, it simulates the resulting circuit behavior. It does not model microprocessor behavior, like Arduino.
Avoid Fritzing diagrams at all costs.
I like Express Sketch. It is free, easy to learn, easy to add custom parts to and has PC board design.
Thanks, will check them out 
Hey gang-
I'm curious to learn more about this LTSpice app?
I tend to use/prefer Eagle for my PCB designing.... but having a simulator might be nice as well..
Are you talking about drawing out the schematic so it looks nice, or designing a schematic that will be turned into a PCB design?
A lot of people like Fritzing, but I think it's dreadful. It does produce diagrams that look really pretty, and are kinda nice for, like, classroom instruction - but not serious design work.
For PCB design, a lot of us use Eagle (that seems to be the most popular), though the learning curve is rather steep, to say the least - it's a cad program, which means your expectations about how interfaces are to behave have to go out the window (the schematics you get out of Eagle will also look like utter shit if you don't make a point of laying it out neatly).
Yeah sorry I didn't make it clear in the first post, I am referring to simply a graphical circuit design, not a PCB track design software
ExpressPCB is good for that, I often use it to create drawings for discussion here in the forum.
http://ewww.expresspcb.com/ExpressPCBHtm/Free_cad_software.htm
Example attached.
(altho that example should also have AVCC connected to +5V, and not just a 0.1uF cap to Gnd.
Aref only needs a 0.1uF cap to Gnd).
Thanks all
ExpressPCB has done the job 