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Last update: Mon Oct 15 22:56:20 2018
SeaPhone and memoriesThis is an artistic project: no real use in life, just be nice, sit, question or surprise you maybe?
Basically I tried to reuse the maximum of the phone:
Reusing a rotary phone
Rotary dialThat's the fun part: 3 wires, 1 input at GND and 2 outputs. Use a pulled-up pin to read, something happens when the pin becomes low.
① when you start sweeping the dial it gets low, maybe as a warning that dialing will happen.
② One low for each digit (10 for the zero) once the dial swipes back to its original position.
You'll find all of this explained in details in this Instructable (thanks for sharing mate).
Input of a "4": pulses are ~36ms long separated by a ~16ms gap
EarpieceA simple microphone and speaker, 2 pairs of wires, one for each. Unscrew the mouth/ear to see the wire colors. For mine it was black for ear, white for mouth. Is it a standard?
ElectronicsNot much there, you got a few resistors, big coils if you're in need. They make perfect electromagnet I assume. The bell system is one: an arm with a permanent magnet that is placed between 2 bells and next to the electromagnet. When the later inverts its magnetic field rapidely, the arm is pulled or pushed, banging the bells. Simple and efficient. But anyway scavenging stopped here for me.
Exploded view of the phone, missing the dial though.
You can see the MP3 player, with its SD card and some wires.
While running, the mp3 player shiiiiiiiines but you can't see it once all assembled, and I'm too lazy to take the leds off if it's not visible. Will do though if it becomes a problem.
All content on this site is shared under the MIT licence (do what u want, don't sue me, hat tip appreciated)
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