I need some help creating the dot pattern and I’m assuming grasshopper is the way to do it.
The speaker mesh follows a curve at the bottom and slowly transitions to a straight horizontal line in the center. I need the circles to follow the curves and fit the overall circular shape.
Where can I find some resources to get me started and has anyone made something like this before?
So the image shows what you don’t want? Better to show what you do want, eh?
Reminds me of this post three weeks ago:
So I adapted it. Boundary is slow with so many circles so I disabled it in the GH file.
Tricky to adjust ‘Step’ and ‘Spheres factor’ sliders to have it look good… 
This version produces something closer to the image. Holes are aligned on curves that “bend” more at top and bottom. I had some trouble with off-by-one errors setting ‘Step’ and ‘Radius’ sliders independently. It’s still possible for small circles (“holes”) to cross the large circle.
P.S. I almost forgot about the ‘Sep’ slider at the lower right.
Added two things:
Yes that image is what I would like. I wasn’t expecting someone to build it out. Thank you Joseph.
I had to build it to answer your question. Reminds me of a story…
A woman once came to Mahatma Gandhi with her little boy. She asked, “Mahatma-ji, tell my little boy to stop eating sugar.” “Come back in three days,” said Gandhi. In three days the woman and the little boy returned and Mahatma Gandhi said to the little boy, “Stop eating sugar.” The woman asked, “Why was it necessary for us to return only after three days for you to tell my little boy that?” The Mahatma replied: “Three days ago I had not stopped eating sugar.”
― Ram Dass, Be Here Now
What you built worked great. I was able to use the sliders to get the design I needed.
I’m such a noob I have to ask this: How do I cut this into an existing surface?
I’ve watched some tutorials that said to convert it to a mesh and then I totally get lost. Are there any courses you would recommend to get me started?
I strongly recommend that you read this page (it used to be pinned above all other threads 
) and follow the guidelines, especially #3:
3. Attach minimal versions of all the relevant files
P.S. You don’t need a mesh for this.
B&O speaker.3dm (397.6 KB)
Grasshopper Speaker mesh.gh (24.2 KB)
It’s good to know that a mesh isn’t necessary.
This is my modified grasshopper file. The rhino file shows a red surface that I want to cut the perforations with. The purple circle is where the perforations stop. How do I cut an existing surface? the online tutorials are only showing me how to do it with a surface that was built with grasshopper.
The code is so mangled I didn’t recognize it any more, in part because it appears you used version ‘22c’, clearly labeled “DEPRECATED”, instead of the better version ‘22d’. That’s too bad.
I didn’t bother trying to fix it or trying to find a solution that doesn’t take 4.8 minutes to run 
Nice!
I converted the pattern to curves and baked it. Then manually cut the holes out.
This is great. Now I know how to have grasshopper so it. I’ll have to look at the other file you sent. When I opened all of them this one seemed to give me the look I was going after.
Thank you again! I appreciate the help.
What Why not bake the new brep to replace the old? Version ‘22d’ is the correct one to use, the particular pattern you like are parameter settings. 
This implements version ‘22d’ integrated with your Rhino file. It uses a different method to cut the holes that takes only 17.8 seconds (red group) instead of 4.8 minutes. Still, the slow SrfSplit component should be disabled while manipulating parameters.
Unfortunately, the Rhino file is not precise. The circle is very close but not centered at the origin. ‘Layer 01’ (red) should be hidden to see the holed brep.
P.S. R8 like the Rhino file: B&O speaker.3dm
