I am trying to create my own package in Eagle 6.6. I have to place holes at specific angle of 36 degrees.

I need to place 10 holes on the circle with an angle of 36 degree to each hole.

The package I am trying to create as shown below:

Original package dimensions

I have created a circle with 5 mm diameter. The first hole I placed at position (0 2.5) so its top and bottom hole also like (0 -2.5). I am confused about how to place next hole at an angle of 36 degrees. I had placed 10 holes on the circle but those are not at correct angle to each other.

The package I am creating as shown below:

my package

Can someone help me with this?

  • 2
    \$\begingroup\$ Not sure how you do this in Eagle itself but if you got stuck you could probably make a spreadsheet using the parametric equation for a circle and manually type in all the points. \$\endgroup\$ – PeterJ Aug 5 '14 at 9:20
  • \$\begingroup\$ That's exactly how I would do it. I'm not an eagle expert but I don't think you can define angles, electronic cads are quite primitive. \$\endgroup\$ – Vladimir Cravero Aug 5 '14 at 9:48
  • \$\begingroup\$ The open source Geda package "PCB" can place components or rectangular pads at arbitrary angles, should you ever need to. But I concur that for placing round holes as here, a spreadsheet is probably the way to go. \$\endgroup\$ – Brian Drummond Aug 5 '14 at 11:56

x = r cos(angle), y = r sin(angle).

Now, cos(18) = 0.95. sin(18) = 0.31 . From that you can calc the positions of the four holes above and below the horizontal midline. Proceed similarly for the other four holes, using (18+36) degrees.

  • \$\begingroup\$ Yeah, I don't think there's a workaround, really. EDIT: There may be a ULP script for this, though. \$\endgroup\$ – Dzarda Aug 5 '14 at 10:33

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