[sdiy-interim] Reverse engineering printed circuit boards

[Tony K]

Hi group,

  I've been cloning/repairing/learning about music designs by 
painstakingly tracing and drawing circuits and reconstructing them 
but it's not practical for larger designs.I Googled  the subject and 
found some places that use very expensive high resolution A3 scanners 
and what not to reverse pcbs and was wondering if anybody has tried 
this on home equipment ?

I'm mostly interested in cloning for personal use at this point.
I did something like this a while ago - what I did was scan a pcb and 
used that as a background in AutoCAD (I think) and placed pads and 
traces down. I used a cheap scanner and the scaling was off - very 
frustrating. I've been shopping around for a decent A3 scanner but 
I'm not sure what to look for exactly in terms of accuracy. Which 
programs (pcb) allow you to import images and use as backgrounds to 
lay pads and traces over ?

I don't want to spend too much money on equipment to do this, and if 
it's prohibitevely expensive I will just use my old method of reconstruction.


Tony K


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