Antique Phone Resurrection Using Raspberry-Pi @Raspberry_Pi #PiDay #RaspberryPi

It’s not just an old rotary phone, it’s an old-timey rotary phone. A Raspberry Pi re-fit on two olds and a timey. That’s Here’s more from Mark Lister via hackster.io:

Last year I bought an old telephone (made in about 1895) from an auction. It was of course completely incompatible with modern phone systems so I removed the insides, threw in a Raspberry-Pi and converted it into a mobile phone. The original handset works for the sound and microphone too. I squeezed in a GSM hat (which holds a SIM card), a USB speaker and a UPS card. I managed to connect it to the rotary dial with the existing wires directly onto the Pi GPIO and write code to convert the pulses into digits that I could send to the SIM card to dial with. The speaker is there to play an mp3 sound of an old telephone ringing.

See project!


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