Board Design and Layout

I've done a lot of board level design.  Hardware design is where the rubber really meets the road in a project.  PCB layout is an important part of this. 

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 I use CadSoft Eagle, both for schematic design and printed circuit board layout. Eagle includes an autorouter for quick routing of non-critical areas, but allows a tremendous amount of flexibility in manually designing a well thought out board.   Eagle on Linux has been solid and reliable for me, and I'm fast with it now.  I've also used Viewlogic, Pads, Synario, and even Tango for schematic and PCB design.  

Careful board layout is important power electronics.   Between spacing for tracking distances and minimizing loop
area for magnetically coupled EMI, it can be a headache.

I've done a lot of critical layout work in analog and power circuits.


                                                
Digital board for a brushless motor control circuit

Not my favorite design, but it looks kinda snazzy.
 RF buffer probe, minimum size
and on RF laminate to reduce
radiation and loss

 
           
Interface Card                                    

Interface Module with critical analog and high voltage spacing
  The big fat lines are actually differential pairs on the real board.