How to Make a Custom Library Part in Eagle CAD Tool
Introduction: How to Make a Custom Library Part in Eagle CAD Tool
The eagle cad tool is a great thing. It does have something that I see as a draw back. That is that you need to pick a package for your part while you are still working on the schematic phase of a project. I assume Cadsoft, the makers of eagle, have their reasons. Although eagle comes with an extensive part library, some times the part you want is not in the package you want,
and other times neither the package or part you want is in their libraries. In these cases you are you are left with two choices. First, pick a similar part that already exists. Second, make your own part. I suggest creating your own library. If you have your own library it will be easier to share your work with others. Each aspect has its own set of layers that you must keep straight. Again you are left with two choices. The easy way, in which you copy a similar part and tweak it to match your specifications. This is of course in contrast to making one from scratch.
For this instructable we will design a part used in the IMU for the PSAS rocket. The object of our affection is the ADXRS150 gyroscope from Analog Devices. So we want agrid size that will make it easy for us to place these balls. Withoutthe multiple the grids are too small to be displayed. Note the lines will now be 1 mm apart. leave the display on and the style lines. Your screen will have a dizzying amount of grid lines on it.