This one caught my eye on twitter - a Redditor has converted a 1961 Western Electric Model 500 telephone into a rotary cell phone using Arduino.

The fact that you can build a cellphone around an Arduino is pretty neat. But we’re drawn to this project more as a testament to the advancement of hobby electronics. An [Average Joe] can bui… ...

David Mellis has created his very own cellphone using an Arduino GSM shield, as with any phone, on the Arduino GSM Shield cellphone allow you to store numbers ...

Have an ancient cell phone sitting around? Tinkernut shows you how to make use of it by turning it into a smartwatch with an Arduino brain. Using a Nokia 1100, Tinkernut walks you through pulling ...

If you've ever wanted to make a cellphone for yourself out of parts from the likes of hack-friendly Aduino, now is the time. Though you're not going to be winning any beauty contests with this ...

Cell phones are easy enough to come by these days, but if you've ever wanted to just build your own, Instructables user xiaobo__ shows how to do it with an Arduino. The little DIY phone isn't ...

But Mellis wants to change that. “Making a cell phone seemed exciting but also challenging–which I thought would reveal more about the possibilities and limits of DIY practice,” he says ...

London-based roboticist Evangelos Georgiou wants to offer an open-source platform for helping Arduino hobbyists take their projects mobile, thanks to a remote controlled robot called the RK-1 that ...

It’s safe to say that few people still use rotary phones on a daily basis. Hell, most of us don’t even use landline telephones anymore. But just because these classic phones are no long… ...