I recently made myself a ring light. While uploading photo’s today, I found some test shots that you might find interesting:
A Philips headphone microphone box cracked open:
The MEMS microphone through a microscope:
You can clearly see the membrane of the microphone. Also notice the two gold wires going to the IC on the left. Interesting stuff!
Like this? You might be interested in my latest project. It's a desk light made completely from a single sheet of printed circuit board. Check it out:
