That, along with the necessary electronics needed to make the dial interface ... of how her Rotary Cellphone came together, but also raw schematics and links to all of the original design files ...

The 1970s called and they want their rotary dial cell phone back. Looking for all the world like something assembled from the Radio Shack parts department – remember when Radio Shack sold parts?

He used the RasPi’s GPIO pins to read pulses from the rotary dial – a functional dial is always a welcome feature in rotary phone hacks. An old USB sound card was perfect for the microphone ...