Hah! I'm glad to know I'm not the only one that does this! I've done the Moog MG-1, even though it had to be scanned in two sections. It's already been etched, and I'm doing a similar thing with it that I am with my x0x build, comparing more available modern components against the originals. At least in this case, I have the original synth to compare results. I'm also in the drawing phase of the Paia Fatman board, making it so that I can add features via a smaller daughterboard, as well as making some things a little larger and re-arranging them so that it'll be easier to etch at home. The Fatman also uses some components that are no longer available, so I'll probably re-route some things to use parts that are still current.bcbox wrote:I didn't accurately describe exactly what I was doing. It was a messed up unit, I was fixing the VCF and VCO and replacing all the electrolytic and tantalum caps. It was a good opportunity to remove all the components from the PCB and get a good scan of it so I could accurately clone the PCB. Much easier than working from the layouts in the service manual.And damn, that's quite a strip down job you are doing on that 303! What on earth is wrong with it that requires all that work?
One of the cool things about the drawing software I use is that you can import a .pdf file as a background image, and draw directly over. Scan image, save as .pdf, import, and you're ready to clone, then hack, modify, etc. Another cool thing is that if you flood the vacant areas with "copper", it'll actually print the flood out also so that it'll be there when you photo or toner transfer a prototype (I have yet to find a way to get Eagle to do this). The coolest thing though is that's it's cheap! As in, free, unless you want to upgrade to be able to make a board that has more than 700 pins.