Category Archives: 3.5mm

Serial Connection Over Audio: Arduino Can Listen To UART

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We’ve all been there: after assessing a problem and thinking about a solution, we immediately rush to pursue the first that comes to mind, only to later find that there was a vastly simpler alternative. Thankfully, developing an obscure solution, though sometimes frustrating at the time, does tend to make a good Hackaday post. This time it was [David Wehr] and AudioSerial: a simple way of outputting raw serial data over the audio port of an Android phone. Though [David] could have easily used USB OTG for this project, many microcontrollers don’t have the USB-to-TTL capabilities of his Arduino – …read more

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Hackaday Prize Entry: Clunke Button Powers Accessibility

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An AT button is a device that helps people with all kinds of physical disabilities to interact with their world. There isn’t much to them,  just a switch wired up to a 3.5mm mono plug or jack, but the switch is installed in a large button housing that’s easy to operate.

These buttons can be used with any appliance or toy that can be adapted for mono input. They’re a simple piece of technology that makes a world of difference, but for some reason, they cost around $65 each. Because of this, people make their own simple switches, but these …read more

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Hackaday Prize Entry: Clunke Button Powers Accessibility

Posted on by

An AT button is a device that helps people with all kinds of physical disabilities to interact with their world. There isn’t much to them,  just a switch wired up to a 3.5mm mono plug or jack, but the switch is installed in a large button housing that’s easy to operate.

These buttons can be used with any appliance or toy that can be adapted for mono input. They’re a simple piece of technology that makes a world of difference, but for some reason, they cost around $65 each. Because of this, people make their own simple switches, but these …read more

Continue reading Hackaday Prize Entry: Clunke Button Powers Accessibility→

Bringing Back the iPhone7 Headphone Jack

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Plenty of people bemoaned Apple’s choice to drop the 1/8″ headphone jack from the iPhone 7. [Scotty Allen] wasn’t happy about it either, but he decided to do something about it: he designed a custom flex circuit and brought the jack back. If you don’t recognize [Scotty], he’s the same guy who built an iPhone 6 from parts obtained in Shenzhen markets. Those same markets were now used to design, and prototype an entirely new circuit.

The iPhone 7 features a barometric vent, which sits exactly where the headphone jack lived in the iPhone 6. The vent helps the barometric …read more

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Death To The 3.5mm Audio Jack, Long Live Wireless

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There’s been a lot of fuss over Apple’s move to ditch the traditional audio jack. As for me, I hope I never have to plug in another headphone cable. This may come off as gleeful dancing on the gravesite of my enemy before the hole has even been dug; it kind of is. The jack has always been a pain point in my devices. Maybe I’ve just been unlucky. Money was tight growing up. I would save up for a nice set of headphones or an mp3 player only to have the jack go out. It was a clear betrayal  …read more

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Smart Watch Hack Lets You Use Your 3.5mm Headphones With An iPhone 7

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As you may have heard, the iPhone 7 is ditching the 3.5 mm headphone jack in the name of progress and courage. Whatever your take on that, it leaves the end user out in the cold if — for instance — their preferred headphones still use the old format. Here to save you from an untimely upgrade is YouTuber [Kedar Nimbalkar], who has modified a Bluetooth Smartwatch to incorporate a 3.5 mm jack to allow continued use your current headphones.

After opening up the smartwatch [Nimbalkar] removes the speaker, solders in a 3.5 mm headphone jack and clips out an …read more

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A 3D Printed Camera (Including The Lens)

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Barring the RepRap project, we usually see 3D printers make either replacement parts or small assemblies, not an entire finished product. [Amos] is the exception to this rule with his entirely 3D-printed camera. Everything in this camera is 3D printed, from the shutter to the lightproof box to the lens itself. It’s an amazing piece of engineering, and a testament to how far 3D printing has come in just a few short years.

35mm film is the most common film by far, and the only one that’s still easy to get and have developed at a reasonable price. This 3D-printed …read more

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