For those interested, here's a Sparkfun project from 2005 on converting an actual rotary phone into a portable cellular phone: https://www.sparkfun.com/tutoria

For those interested, here's a Sparkfun project from 2005 on converting an actual rotary phone into a portable cellular phone: https://www.sparkfun.com/tutorials/51 https://www.sparkfun.com/tutorials/51 You used to be able to buy them too: https://www.sparkfun.com/products/retired/286 https://www.sparkfun.com/products/retired/286