Android-based Vintage Phone

Step 4 Preserve the Ringer

I really wanted to keep authentic vintage ringer. Unfortunately, I couldn't leverage any of the original designs: old electromagnets took up all space in the finder box. So, I had to throw everything away and design ringer mechanism from scratch. I mounted original metal ball (that hits the chimes) on a pivoting platform that it driven by a small servo motor. The motor has an ellipse on its axis. This ellipse rotates and pivots the platform. I think the diagram explains it a bit better.

I used Inkscape to create 2D design. I must mention that using this tool very much feels like a torture. I really hope I'll be able to find better affordable tools for my next project.

One the design was ready, I've submitted it to Ponoko for laster cutting. Laser-cut panel arrived couple weeks later. Arrived panel could be seen on attached picture. Another picture shows how components actually looked.