Finding Digital Solace In An Old Nokia Phone

September 20, 2022 by 9 Comments

We don’t have to tell you that the current mobile phone market is a bit bleak for folks who value things like privacy, security, and open source. While there have been a few notable attempts to change things up, from phone-optimized versions of popular Linux distributions to the promise of modular handsets — we still find ourselves left with largely identical slabs released by a handful of companies which often seem to treat the customer as a product.

Instead of waiting for technological relief that may never come, [vrhelmutt] has decided to take matters into their own hands by looking to the past. Specifically, by embracing the relatively uncommon Nokia Asha 210. Released in 2013, this so-called “feature phone” offers a full QWERTY keyboard, Nokia’s Series 40 operating system, WiFi, Bluetooth, and a removable BL-4U battery. Unfortunately, with 2G cellular networks quickly being shut down, it’s not likely to get a signal for much longer (if at all, depending on where you live).

So why would you want to use some weird old Nokia phone in 2022? [vrhelmutt] argues that there’s a whole world of S40 software out there that can still be put to use, ranging from games to SSH clients. It’s also relatively easy to develop your own S40 applications in Java, with the original software development kit still freely available online. Combined with the solid (if considerably dated) hardware, this makes the Nokia Asha 210 a surprisingly compelling choice for a pocket hacking platform.

Whether you’re looking for a cheap device that will let you chat on IRC from your couch, or want to write your own custom software for controlling your home automation or robotics projects, you might want to check the second-hand market for a Nokia Asha 210. Or if you’re eager to get experimenting immediately, [vrhelmutt] is actually selling these phones pre-loaded with a wide array of games and programs. Don’t consider this to be an official endorsement; frankly we’re not feeling too confident about the legality of redistributing all this software, but at least it’s an option for those looking to get off the modern smartphone thrill-ride.

If you’re looking for something even farther removed from today’s mobile supercomputers, perhaps we could interest you in the Rotary Un-Smartphone.

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Hackaday Podcast 185: A 2022 Rotary Phone, How AI Imagines Zepplin, Are We Alone In The Universe

September 16, 2022 by 3 Comments

This week, Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi start off by talking about the chip shortage…but not how you think. With a list that supposedly breaks down all of the electronic components that the Russian military are desperate to get their hands on, we can see hackers aren’t the only ones scrounging for parts. If you thought getting components was tricky already, imagine if most of the world decided to put sanctions on you.

We’ll also talk about kid-friendly DIY stereoscopic displays, the return of the rotary cellphone, and using heat to seal up 3D printed parts for vacuum applications. Join us as we marvel over the use of rubbery swag wristbands as tank treads, and ponder an array of AI-created nightmares that are supposed to represent the Hackaday writing crew. Finally we’ll talk about two iconic legacies: that of the 3.5 inch floppy disk, and astrophysicist Frank Drake.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

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Replaceable Batteries Are Coming Back To Phones If The EU Gets Its Way

March 30, 2022 by 150 Comments

Back in the day, just about everything that used a battery had a hatch or a hutch that you could open to pull it out and replace it if need be. Whether it was a radio, a cordless phone, or a cellphone, it was a cinch to swap out a battery.

These days, many devices hide their batteries, deep beneath tamper-proof stickers and warnings that state there are “no user serviceable components inside.” The EU wants to change all that, though, and has voted to mandate that everything from cellphones to e-bikes must have easily replaceable batteries, with the legislation coming into effect as soon as 2024.

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Rotary Phone MIDI Controller Still Makes Calls

March 15, 2022 by 3 Comments

[Kevin] has long wanted to do something musical with a vintage rotary phone and an Arduino, and has finally done so and committed the first of several experiments to HTML in a five-part series. He found a nice old British Telecom number, but it had been converted to plug and socket wiring to work on the modern system. Because of this, [Kevin] wanted to keep it completely functional as a phone. After all, it ought to work fine until 2025, when pulse dialing will no longer be supported in [Kevin]’s locality.

As you can likely understand, [Kevin] was keen to interface with the phone from the outside and leave the inside untouched. He used a sacrificial ADSL filter’s PCB to break out the socket, and added a pull-up resistor between the pin and 5 V.

Pretty quickly, [Kevin] figured out that when the phone is on the hook, it gives a constant high signal, where as the picking up the phone presents as a high signal going low, and dialing each number results in pulses of that quantity that alternate between high and low. Continue reading “Rotary Phone MIDI Controller Still Makes Calls” →

A Mobile Phone For The Pulse Dial Generation

July 29, 2020 by 7 Comments

One of the useful side effects of the ubiquitous availability of cellular network data modules is that they can be used to create custom mobile phones. It’s surprising in a way that we don’t see as many of these projects as we’d expect, but by way of redressing that deficiency we’re pleased to see the work of [Proton Gamer], who has taken a vintage rotary dial phone and upgraded it with an Arduino and GSM shield to make a very unexpected mobile phone project.

It’s not entirely certain from the write-up which manufacturer produced the donor phone or for which country’s network it was produced, but it seems typical of the type you might have found the world over in the 1960s. We’re given a breakdown of the various components and how to interface to them, the ringer for example is run using a motor driver board. There are comprehensive instructions for the conversion, though sadly they involve gutting the phone and removing the original hardware. The result can be seen in the video below the break, and the finished project makes a mobile phone call from the unlikeliest of hardware.

This certainly isn’t the first rotary dial mobile phone we’ve featured, including one based on a conference badge.

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Ancient History Of The Phone Jack

June 5, 2020 by 66 Comments

While watching a video about old radios from the 1920s, a phone jack popped up. The host mentioned that phone jacks are super old and he wondered what was their origin. I always assumed they had something to do with the telephone system, and that’s right, but I had no idea how old they really are and how they’ve evolved. Turns out the venerable plug goes back to at least 1878.

Keep in mind, I’m talking about the good old fashioned 1/4″ phone jack with two wires. Over time, the jack and plug have spawned different versions with more wires and — particularly — smaller dimensions. The headphone jack that many smartphone makers are dropping is a direct descendant of that old phone jack. But a mono cable like you would see connecting an electric guitar or another mono source would be right at home connected to a 1900s switchboard. Let’s take a look at the origins of a design that’s almost 150 years old and still in use.

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Rotary Controller Dials In PC Volume

June 4, 2020 by 9 Comments

As wonderful as mechanical keyboards are, most of the pre-fab and group buy models out there have zero media controls. If you want rotary encoders and OLED screens to show what function layer you’re working in, you’ll probably have to build your own keyboard from the ground up.

Hackaday alum [Cameron Coward] got around this problem by building an electromechanical buddy for his keyboard that works as a volume control. Now that we don’t rely on them to make phone calls, rotary dials are a fun throwback to a time that seems simpler based on its robust and rudimentary technology. This one is from a lovely burnt orange Bell Trimline phone, which was peak rotary dial and one of the idea’s last gasps before tone dialing took over completely.

Operationally speaking, [Cameron] is reading in the dial’s pulses with an Arduino Nano and using a Python script to monitor the serial connection and translate the pulses to volume control. We like that this is isn’t a volume knob in the traditional sense — it’s a game of percentages. Dialing ‘2’ gives 20% volume across all programs, and ‘8’ raises it to 80% of maximum. Need to mute? Just dial ‘0’, and you’ll begin to understand why people wanted to move on from rotary dialing. It won’t take that long, but it’s not instant. Check out the demo after the break.

This isn’t the first time we’ve seen a rotary dial used to control volume, but that’s one of the minor selling points of this rotary cell phone.

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