Soldering and first pcb with Eagle

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developing first pcb in eagle:

see attached picture.

i placed components on bottom see red , blue going different pins of bottom part?
can solder bottom component on either side? or have solder both sides, or side route leads to. (red=solder bottom, blue= solder top)

the arduino mini pro vcc pins connected eagle, does(n't) matter?

left pads (octagon) taken header file , right round pins lcd.
inside octagon showing square layer (51tdocu). different size pads handled same way round pads, or why use octagon shaped pads?


red top-side, blue bottom.  if have through-hole components doesn't
matter side traces run.  the software assumes double sided board plated-
through holes.  if designing single sided board + through-hole components
you should use blue traces.

you should edit power/gnd traces thicker (40 or 50 thou), , maybe learn groundplanes and
polygons.


Arduino Forum > Using Arduino > General Electronics > Soldering and first pcb with Eagle


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