[HN Gopher] Raspberry Pi in Rotary Phone
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Raspberry Pi in Rotary Phone
Author : polm23
Score : 25 points
Date : 2021-09-05 04:41 UTC (18 hours ago)
(HTM) web link (www.instructables.com)
(TXT) w3m dump (www.instructables.com)
| jesuslop wrote:
| It could have been a hip IP phone also
| lightstack wrote:
| I did the same thing to a numpad phone (also old) about 2 months
| ago. I squeezed a pi zero-w into the chassis and wrote some
| software to bind each key from 0-9 to a song and then used the
| Pi's Bluetooth module to play the sound on a speaker across the
| room. I also have a button that reads out the current time and it
| runs a website to upload new songs and change the bindings. It
| was a really fun project and I am surprised someone had the same
| idea!
| pablodavila wrote:
| I've been meaning to build a similar project for my SO. I want is
| to be able to connect the rotary phone via bluetooth for calls
| (only calls) and dialing if possible. Has anyone worked with
| anything similar that can provide some pointers?
|
| I'm guessing the dialer part should be "simple" as I could
| probably connect an Arduino as if it were a keyboard but can't
| find much on the audio part.
| swayvil wrote:
| I never realized what a perfect rpi case a rotary phone is. You
| can even fit a usb hub on there. And it can be quite stylish. And
| durable. And ez to cut the plastic for mods. And cheap. My eyes
| have been opened. I'd probably strip everything off it tho.
| spookylettuce wrote:
| My child is old enough now to stay home alone during short
| errands. Since we don't have an old school land line it would be
| cool to take inspiration from a project like this and build her a
| "red line" device that gives her immediate access to reach me
| without breaking down and buying her a cell phone yet.
|
| But what would I hack together for the software side of that?
| bombcar wrote:
| If you're in the Apple ecosystem the homepods can intercom.
| squarefoot wrote:
| If you are within short range radio coverage, why not walkie
| talkies?
|
| Check PMR446 (EU), FRS (US) and similar services.
|
| https://en.wikipedia.org/wiki/PMR446
|
| https://en.wikipedia.org/wiki/Family_Radio_Service
| opencl wrote:
| The software could be pretty simple. Hook a button up to GPIO,
| write a bash wrapper around one of the command line VoIP
| clients, write a little program to call the script when the
| button gets pressed, autorun that one on boot.
| bellyfullofbac wrote:
| If only Whatsapp/Signal/Telegram has open APIs to allow voice
| calls...
|
| But I guess using VoIP software it's not a new idea:
| https://github.com/hnesland/aselektriskbureau
|
| It would be neat to enable dialing, e.g. "1" for Mom, "2" for
| Dad...
| jareklupinski wrote:
| The simplest solution for me was to get a "feature phone" that
| doesn't have apps or anything else enticing, and leaving it in
| the drawer as an 'emergency phone'. The SIM is on the family
| plan so it's not a significant expense, and it keeps a charge
| for about a month as it's off most of the time anyway.
|
| It ends up not becoming the emergency phone and more 'remind
| xyz to grab abc on the way home' phone but oh well :)
| alerighi wrote:
| You can buy an ATA (Analog Telephone Adapter) to convert old
| analog phones to VOIP, and then use it with whatever VOIP
| service you want. Just be sure that the adapter supports pulse
| dialing since you want to use it with a rotary phone (not all
| does).
| wolfgang42 wrote:
| If it's being used as a "red phone" (pick it up and it
| immediately calls the other end), the feature that the parent
| wants to make sure it has is is "automatic ringdown".
| asciimov wrote:
| I'd skip the projects and just buy one of the numerous phones
| that target this market. They make watches, dumb phones, and
| smart phones, that are locked down and only allow
| phoning/texting specific people.
|
| The other option would be to get a real copper phone line.
|
| My reasoning is that a real emergency may include a power
| outage. Relying on some cool hack isn't going to be helpful
| when your child is trying to reach out to you when there is no
| power at home.
| alerighi wrote:
| Unfortunately in my country even landline phone lines don't
| work on power outages, since with the transition to digital
| only lines (with VDSL) is the router that inside has an ATA
| to which you connect your landline phone. In fact you have
| VOIP phone service at your house (in fact you can avoid
| completely to connect your phone to the router phone socket
| and use whatever VOIP phone you want, with the correct
| settings extracted from the provider router).
|
| Even if you provide backup power to the router is not enough,
| since at the other end, VDSL cabinets in the street, there is
| no backup power, so if it's not a blackout of only your house
| but it insist the local transformer, the VDSL cabinet is
| probably out of power too and thus no line.
|
| The only reliable solution is 4G that is not so reliable
| since in case of emergency lines get overloaded.
|
| I probably should get an ham radio license to be safe...
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