Data Sheet

PCB Layout
135
Routing to the left of the right hand pads of the Processor
We now need to place a via before we can connect to the SMT pad on top copper. As described
above you can either double click the mouse at the point you wish to place the via or you can
press the spacebar to float a via and then guide the placement point with the mouse before left
clicking to commit. The latter method has the advantage of allowing you to butt the via as
closely as possible against the pad thereby minimising the stub track length on top copper.
Placing a via by pressing the space bar
Quite a lot has been covered in making these connections and, unless you are fairly skillful,
there has probably been some finger trouble along the way. We’ll continue with the other
connections from the J2 connector to help familiarize ourselves with the techniques we’ve
introduced.
Pin 2 of the connector should follow an almost identical path to pin 1 and again we can start
placement on bottom copper (check the layer selector before you start placement; the space
bar will toggle the layers). We can easily hug the track we have just placed by moving the
mouse parallel to the path we want to travel but over the original track as shown below.
Tracks will also hug other tracks