Blogger Yaymukund has created a random tune generator using an old rotary phone, which plays a tune every time someone picks up the handset.
To create the generator, all components were wired to a D92732 circuit board, which was powered by a Teensy, a battery pack and an audio breakout board.
Yaymukund commented that the most expensive part of the process was the actual phone, which cost £65, mainly because it is an antiques and commands a ‘need it but don’t have it’ price.
He added that the project could have also used a SLIC module to preserve the original look and feel of the phone, while also making it ring.
