I'm surprised no one posted this:
Ladyada is an accomplished PCB publisher. From what I can see, this is
a daughterboard for an SD card, with an SMD card connector and a
voltage level shifter.
It is fascinating to watch her work. As most experienced Eagle experts
know, routing is the Real Work, and the autorouter is for sissies, just
like vias are. After all the work is done, she has only three.
See how she wriggles the lines through, sometimes changing the layer of
some signals up to four times. She does not hide the GND airwires and
changes the shape (and layer!) of the GND plane several times. I always
do the GND plane dead last and hide behind via's to patch the different
She doesn't avoid "acid-traps" (90º angles in traces) either, although
she has set the 45º angle in routing.
She does go back to the schematic, but mostly for naming signals, and
gateswapping. I often leave signals unconnected, only to attach them to
the most convenient PIC pin after routing the wires.
No movement of components either, and a very neat schematic. My
schematics are a mess, since they are optimised for routing, so all
chip symbols have their pins at the proper sequence.
Note the attention to detail when she makes the silkscreen: this is a
board that will primarily be used by others, so she adds lots of signal
A must-see for everyone here.
Eur van Andel firstname.lastname@example.org