I've just uploaded my latest PCB. It's a prototyping board for the
Siemens MC55 GSM modem module. The tricky part about it is the Hirose
DF12 50 way socket for the MC55, it's tiny with 0.5 mm lead spacing.
I've used that sort of spacing with ICs like the Philips LPC2016 ARM,
but it took some time to get the transparency right - I had to reduce
the pad widths slightly to get adequate clearance between them.
Hirose makes even smaller sockets with 0.4 mm lead spacing, I doubt if
I'll be able to manage those, unless I get the artwork printed on a
really high-res printer.
The pic is here:
http://groups.yahoo.com/group/Homebrew_PCBs/files/PhotoEtching/Leon/Leon