I recently picked up one of the most icon phones from the 50s and and 60s - the Ericofon
This got me thinking of a cool project. I want to have the Ericofon working as a bluetooth handset. The phone should be stationary in my home and be able to connect via bluetooth to my iPhone. When I pick up the Ericofon and enter a number using the rotary dail, the iPhone should then call that number. Also, when I have an incoming call on my iPhone, I should be able to answer it using the Ericofon.
At the end of the phones cable is an old danish 3-pin phoneplug which can be converted to the more commonly used RJ11 interface. The dail method is ‘pulse dialing’, and not the newer DTMF technology:
How can I use the RJ11 interface with the arduino? I’ve searched around the web for a couple of days and found a few others that want to do a similar project but no-one seems to have got i working with the ancient RJ11 technology. Since this phone is an antique, taking the phone apart and modifying it is not an option.
Thanks in advance,
KasperSvendsen
EDIT:
I came across this product that essentially does what I want but it's rather expensive. Also, the fun part of doing a project is gone
If you open the case and install your bluetooth inside.
the Arduino would be able to decode the pulse dial
the cord would really only need to be for power.
or, are you thinking of making a wall adapter that will power the phone and use the phone as it is, and all the new electronics in the wall ?
I do not think that the Arduino can handle the voice and conversation aspects, but there are lots of bluetooth, hands-free devices that could be used as a basis of design. only difference is the speaker. you want an earpiece, they have a larger speaker. simple alteration.
It should be quite easy to fit a Pro Mini and a Bluetooth adapter inside that handset, indeed use the RJ11 for power supply (use a spare 5V phone charger).
