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Step 10Adding Pads
At this point if you want to copy another package from an alternate library you can
use the copy command with the following syntax in the command window.
copy packagename@libraryname
and the package will magically appear, but being man a first principles I'll show you
the long way.
As mentioned earlier one must be careful to make sure one adds elements to the
appropriate layer. Our pads (i.e. balls) for example will belong to the top layer.
In the command window type smd, this command will be used to create the pads. By default
the top layer will be selected. In the Smd drop down box will not have a circle by default
in that box type "0.55 x 0.55", and make the roundness 100%. I also placed a second cross
hair as a reference guide 7mm up and 7mm over know that is the over all size of the chip.
One measurement that is missing is how far from the edge are the pins. Being a slave to
symmetry I made the assumption that the center of the ball would be .8 mm away from the
edge. With properly spaced grids, using the mouse to place pads can be very quick accurate. Alternativly, in the command window if you can type
(x-cord y-cord) and the pad will be placed where you want it. Place the pads as well
as you can, and it should look like this when you are done.
Hints: It may be easier to make the origin the center of the device and
just give the coordinates to place the pads (3.2 0) (-3.2 0) ... etc
use the copy command with the following syntax in the command window.
copy packagename@libraryname
and the package will magically appear, but being man a first principles I'll show you
the long way.
As mentioned earlier one must be careful to make sure one adds elements to the
appropriate layer. Our pads (i.e. balls) for example will belong to the top layer.
In the command window type smd, this command will be used to create the pads. By default
the top layer will be selected. In the Smd drop down box will not have a circle by default
in that box type "0.55 x 0.55", and make the roundness 100%. I also placed a second cross
hair as a reference guide 7mm up and 7mm over know that is the over all size of the chip.
One measurement that is missing is how far from the edge are the pins. Being a slave to
symmetry I made the assumption that the center of the ball would be .8 mm away from the
edge. With properly spaced grids, using the mouse to place pads can be very quick accurate. Alternativly, in the command window if you can type
(x-cord y-cord) and the pad will be placed where you want it. Place the pads as well
as you can, and it should look like this when you are done.
Hints: It may be easier to make the origin the center of the device and
just give the coordinates to place the pads (3.2 0) (-3.2 0) ... etc
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Feb 7, 2007. 7:16 AMjcomuzzi
says:
Something that took me a while to figure out here: If you want a pad with holes, use the "pad" command rather than the "smd" command!
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Nov 2, 2009. 2:21 PMatheel
says:
I don't know how to put the measures of my package. I just can't find the command line. Can you help me with this, please?
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