Not possible. You can't conect a Pico 3.3v logic to an analog telephone line.h
i want a raspi (preferable a pico) two wires in form the doorbell, two wires out to the telephone jack in my fritzbox.
perhaps some components to get the power/current right, but nothing more
So the pi must generate the of-hook mode and the dailing of the tones
my questions:
1: is this even possible on the pi/pico/zero?
2: Where to start looking for code?
3: better/other solutions?
(No "of the shelf" products, way to expensive for me)
4: how can i generate the "off hook" and dialing signals?
I hope someone can help me with this
rgrds
Henk
You need circuitry to do that. That is basically what a modem is.
If you really don't want the cheap reliable off the shelf option that you can control from a Pico with a few simple commands you will have some work to do. And be careful not to fritz your fritzbox or pop your Pico!
Here is some info on interfacing audio to a phone line (for the DTMF tones)
https://www.ranecommercial.com/legacy/note150.html
https://support.biamp.com/Audia-Nexia/M ... ace_basics
Statistics: Posted by PiGraham — Tue Nov 26, 2024 4:28 pm