On Mon, 8 May 2006 16:45:35 -0700, Chops wrote: > Um. Do people version-control their board files, complete with > something visible on the board? that seems like it would be a > good idea :-( Of course we do. Every PCB I design has both the bare circuit board part number and revision in the copper. It's on the film (gerber files) for the PCB too. I have lots of products with multiple revision levels that accumulate over the years and without these markings it would be difficult (or at least very error prone) to determine if you have the correct PCB/artwork/gerber files for a given production run. Matt Pobursky Maximum Performance Systems -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist