Interfacing these displays with anything besides a phone has been a problem ... of [twl]’s board displaying the output of a Raspberry Pi below. If you look very closely, you’ll notice ...

It lets you connect a vintage rotary dial telephone to a Raspberry Pi so you can lift the handset, dial a number, and have an AI-driven conversation reminiscent of traditional phone calls.

The Electromagnetic Field 2018 hacker camp in the UK will have its own GSM phone network ... of which each one is a Raspberry Pi 3 B+ with a LimeSDR Mini. Development of the system was undertaken ...