We only had the bare minimum of copper, which didn't leave a lot of room
for the pick-and-place machine to err. Increase the footprint size for
the TVS diodes.
Signed-off-by: Sean Cross <sean@xobs.io>
Enlarge some pads, to allow the PCB house to stay within tolerances.
They say that pads must be 0.23mm to ensure the laser doesn't escape the
pad.
Signed-off-by: Sean Cross <sean@xobs.io>
Modify the `fab` layer so that it defaults to having footprint
identifiers, and places the designators in an area that makes sense.
Signed-off-by: Sean Cross <sean@xobs.io>
This has more copper, which might make hand-soldering easier. Though
this PCB isn't going to be hand-soldered.
Signed-off-by: Sean Cross <sean@xobs.io>
Add a footprint from KiCad for the power regulator we'll use.
It refers to a 3D file that doesn't exist, so we'll need to find that
first.
Signed-off-by: Sean Cross <sean@xobs.io>
The Kicad default footprints seem volatile and unreliable. Going
between two machines that both have "Kicad 5.0.0" installed results in
incompatibilities because KiCad has renamed their footprint libraries.
Also, for some reason it's going to Github to get footprints instead of
using local copies.
Copy every model and footprint we use into a local tomu-fpga.pretty.
This lets us ensure we can work offline, and also allows us to modify
footprints, e.g. by adding a "Pin 1" marker.
Signed-off-by: Sean Cross <sean@xobs.io>
