Ah, that was yours! I thought that looked like and elegant solution. Then I will order, and try with a boost converter.
I'll start looking into power saving modes too, like you did. I'm planning to trigger the ringing with an NRF24L01 - hopefully that doesn't exclude a power saving mode. (I'll take a deeper dive into the files you put in your post)
@6v6gt What are you using your bell for?
@PerryBebbington Thanks, I'll check out the facebook group!
@Paul_B Could rewiring for parallell further enhance the ringing?
The next step of this project is to shut off ringing and trigger sound files to be played through the handset when lifted off the hook. The earpiece is still functional (connected with and audio jack) and has a great "crackling" sound to it 