Data Sheet

LABCENTER ELECTRONICS LTD.
108
The middle mouse will zoom you in and out as you place components (as will keyboard
shortcuts F6 and F7)
Right clicking on a component once placed will present a context menu option, allowing
you to move, rotate or delete the part.
Changing the snap settings to a finer grid will allow more accurate positioning at the
expense of more precision being required to select the part.
If you place a part in an illegal position (e.g. over another part) you will get one or more
design rule violations. For now, simply move the part to a legal position – we will look
more closely at design rules in the next chapter.
DRC errors
Once you feel comfortable with placing and moving parts, feel free to move on to
the next section. We will load a board with all the parts placed before we discuss
design rules and routing.
Mounting Holes and Pad Styles
Before we move on to look at connectivity considerations we should complete the physical
layout by placing mounting holes for the board. In our case we want to use pad with 3mm hole
and a diameter of around 0.18in and to position them conveniently for mini-locking PCB
supports. The first thing we need to do is switch into circular through hole pad mode and scan
for a suitable pre-supplied pad in the Object Selector.
Select the correct pad style for mounting holes