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New (LTE) Rotary Cell Phone [video]

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Re: New (LTE) Rotary Cell Phone [video]

#21

Very nice. Our home has a rotary phone in most of the rooms (they're cheap on ebay and easy to repair if they're not working). Each one is plugged into a Grandstream HT802, which gets it onto our home network. A raspberry pi runs FusionPBX, which gives each phone a number, and lets them all dial each other. The kids love it!

what a cool idea, how hard was it to set up the PBX on the pi?

Re: New (LTE) Rotary Cell Phone [video]

#22
post #18

Am I the only one that is bothered that the finger stop (or whatever it is called) moves?

Yeah that surprised me too. Is it there so that when the finger stop moves, it registers the number? I've only had a few rotary phones in my life, but I've never seen one where that doohickey (which I believe is the technical term) moves.

Re: New (LTE) Rotary Cell Phone [video]

#24
post #4

Not a constructive comment... but this project made me smile during the whole video. This is awesome! Great hacker in my book.

I see value in sharing a positive reaction and in times like this when I click the comments before the link, this got me to actually go watch.

Re: New (LTE) Rotary Cell Phone [video]

#26
For those with an interest, see also

> Rotary Cell Phone (Description and Build) (youtube 52 mins)

> Mar 5, 2020 My open source rotary cell phone went viral (surprisingly, to me and my husband), and people seem to be interested in it. The original description with links to notes and design files is here: [2] and a starter kit is now available here: [3]

[1] https://www.youtube.com/watch?v=0euCWf0FpOA

[2] http://www.justine-haupt.com/rotarycellphone/index.html

[3] https://skysedge.us/

Re: New (LTE) Rotary Cell Phone [video]

#27
post #18

Am I the only one that is bothered that the finger stop (or whatever it is called) moves?

This is presumably a (physical) space-saving decision. The stop looks like it's right next to the 1. But dialing a digit requires moving the dial. So how can you dial 1 if the stop is adjacent and immovable? It looks like the answer for this small dial is that the stop moves only ~one tenth of a turn.

Hopefully then it does have a real physical stop---otherwise it'd be quite hard to dial correctly!

Re: New (LTE) Rotary Cell Phone [video]

#29
post #18

Am I the only one that is bothered that the finger stop (or whatever it is called) moves?

Yeah that surprised me too. Is it there so that when the finger stop moves, it registers the number? I've only had a few rotary phones in my life, but I've never seen one where that doohickey (which I believe is the technical term) moves.

The moving finger stop was a feature of the Trimline dial phone.[1] It allows making the dial slightly smaller. On most dial phones, there's a large gap between the 1 and 0 holes. On Trimlines, and this new thing, there is no gap. Without that moving finger stop, you get a dial handset like this AT&T prototype: [2] That was called "the Schmoo".[3] Huge bulge in the middle of the handset.

The moving finger stop also appeared in 1960s versions of the Lineman's Test Set (the "butt set", usually hung from a tool belt), where the dial was on the back of the earpiece.

[1] https://en.wikipedia.org/wiki/Trimline_telephone

[2] https://www.bellsystemmemorial.com/images/dl/misc/schmoo.jpg

[3] https://www.bellsystemmemorial.com/telephones-trimline-artic...

Re: New (LTE) Rotary Cell Phone [video]

#30
post #10

I love it when people say "Oh, I'm not a programmer" and then continue showing the stuff they've built (and fully programmed) that is a way beyond in complexity than what most of us professional programmers get to work on, like ever... :)

Same. We had some really smart SOC networking guys, who naturally start automating everything in Python.

When you interrogate, they'd say almost sheepishly 'oh I'm no programmer I just threw this together.' I don't think they realize 98% of programmers are just throwing things together and acting like a God when it actually works...

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