I'm looking for a better, more private solution to an intercom I have between the house and my barn. I have Ethernet run out there, and I currently use the "drop-in" feature on some Amazon echo devices. I'm looking to get away from the Amazon devices entirely (maybe implementing the pine speaker they announced?)

I don't have a lot of requirements, though VoIP would be preferred over a radio style, since it's a metal barn and blocks a lot of signals. I'm good with some self hosted solution, and ideally there's a dedicated device, as I don't want to use my phone or computer for it all the time. I'm probably missing some obvious solution, but figured I'd try to get some ideas together.

Thoughts?

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[–] Nednarb44@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (2 children)

Oh I'm sure I'm overcomplicating it. We had some landline phones growing up that could also ping and "intercom" but those were all connected to phone jacks with an active phone service, ao I figured I couldn't really do that. How is some like the one you mentioned wired? How does it talk to the the other one? Forgive my ignorance.

And to note, I definitely do not need high quality, just something local that is functional.

[–] linearchaos@lemmy.world 1 points 1 month ago

If you can find landline phones with that feature set, just get them. You can just wire them together and put 20 volts DC in the line. Of course you're not going to want to do that over your single ethernet run but if you had multiple...

Telephone services really simple, 18 to 24 volts on hook should pull down to about eight or nine volts when you open the line. If you pulse a 90 volt signal, It will cause them to ring.

[–] Donjuanme@lemmy.world 1 points 1 month ago (1 children)

It's literally speaker wire, or you could clip the ends of your Ethernet and use those (but you probably want your Ethernet out there still XD. One side will be to be run to power, but it'll power the rest of the stations through the wire.

I feel like this is definitely what you're looking for, no computers required.

[–] Nednarb44@lemmy.world 1 points 1 month ago (1 children)

That's fair, and yeah in hindsight would have been great, though tough to retrofit. Maybe I'll look into running another line for something like that. Thanks!

[–] Donjuanme@lemmy.world 2 points 1 month ago (1 children)

Did you run the line under ground or through conduit? Disconnect it from both sides, attach string/fishing line to one side, pull cable out of conduit on the side without the string attached. Detach string from either meet cable, reattach string with Ethernet cable and the additional cable (speaker cable in this case), pull string from the original side until both cables make their appearance.

Outside of walkie talkies (have you considered walkie talkie? Maybe put an antenna outside of the shop?) this is the simplest way to do it (imo, but I don't play with raspberry pi's)

[–] Nednarb44@lemmy.world 2 points 1 month ago

Against some better judgement, I did direct burial. I did consider walkie talkies, but heard doesn't work well in a metal barn (I confirmed I basically have zero cell reception). I could look at adding the antenna though, thats not a bad idea.