Other projects • Very simple DTMF dialer

Hello all,
I am a beginner, maybe medium programmer.

I want to use raspi pico/zero/1 for a very simple task
It is to help my deaf wife to know when the doorbell is pushed.

It should do the following
1: the doorbell button is pushed
2: the raspi connects to the modem on the analog telephone connector
3: the raspi dials the internal number **9 (wich is all internall phones)
4: disconnect after a short time

I don't need a intercom, video or any other fancy stuff!
The internal phones are everywhere in the house and setup in a way my wife knows when they ring.
In my modem i can assign the name "doorbell" to the phone port so it displays on all phones.
I am looking for a "how to" for a long time, but i always end up with way to complicated programs
Like a auto dialer, but then one sending messages and with a code to complicated for me to adapt
Or complete phone systems

So 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 would appreciate any advice and help here

Henk

Statistics: Posted by Kevig — Fri Nov 22, 2024 9:58 am — Replies 6 — Views 72

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