Very nice.<p>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!
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... :)
Very cool.<p>My only nit is the local/nonlocal/alt switch is unnecessary. Local & nonlocal numbers have a different number of digits. Checkdown logic can determine which it is. The phone book certainly has less than 7 digits of pages, and less than 7 digits of contacts per page. The only issue is determining if a short number is for a contact or a contact page. That can be dealt with by pressing a different button than the call button if it's a page navigation.
I wonder which LTE modem this is using. Some LTE modems (like the PinePhone one) run Linux on one of the processors and folks have replaced the proprietary distro on that processor with a free one. If this were using the same modem as the PinePhone one, you could run all the Arduino firmware code on the modem instead.
For those with an interest, see also<p>> Rotary Cell Phone (Description and Build) (youtube 52 mins)<p>> 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]<p>[1] <a href="https://www.youtube.com/watch?v=0euCWf0FpOA" rel="nofollow">https://www.youtube.com/watch?v=0euCWf0FpOA</a><p>[2] <a href="http://www.justine-haupt.com/rotarycellphone/index.html" rel="nofollow">http://www.justine-haupt.com/rotarycellphone/index.html</a><p>[3] <a href="https://skysedge.us/" rel="nofollow">https://skysedge.us/</a>
Cool! I'm relatively young, so the only interaction I've ever had with a rotary phone was my dad finding one in a box at my grandparents' house. Still, this seems like fun. Cool that you can communicate with the cell modem directly.
I'm a developer, did small Arduino project but always found it too overwhelming to create a custom board. What do you recommend to get started? I'm impressed by the custom board of this phone!
Recommend checking out the rest of Justine’s YouTube channel.<p>I’ll die on a hill for ex-spearmint though. That’s ok. She can’t be right about everything.
Love the quirkiness and that it dose one thing well. For myself I would have loved to make the switches a little less fiddly. A phone I can turn on and dial in my pocket would have been my target.<p>However I can actually see it being quite attractive for accessibility reasons. Where it always being in one mode ready for dialing the same way every time has its advantages.
This is really cool. Is there any information on what kind of (standard) hardware/software this is using to communicate with the mobile phone network?
Congratulations on seeing this product all the way through production, a lot of people would have given up with all the headwinds of the past two years