Month: September 2016

Home-made Adjustable Knife Jig

September 23, 2016 by 25 Comments

When sharpening a knife, it is critical to have the knife at the right angle. A knife jig handles this for you, letting you focus on getting the edge right. You could just buy one, but where’s the fun in that? [origamimavin] decided to make his own adjustable knife jig using bits he bought from the hardware store for $27, and which you might have in your junk pile. Fortunately for us, he’s written up the process in excellent detail, explaining the how and why of each step.

He used a couple of tools that you might not have lying around (a bandsaw and a belt sander), but these could be easily replaced with their manual cousins, or your local hackerspace will doubtless provide you access to them. Either way, it’s a simple build which could help your knives keep their clean, sharp edge for years to come.

From Audio, To 3D Printed Sculpture, And Back Again

September 23, 2016 by 18 Comments

Have you ever wondered what a song looks like? What it feels like in your hands?

Those odd questions have an answer that has taken shape over at [Reify], which has developed a way to turn sound waves into 3D-printed sculptures. These visualizations made manifest can be made from any audio — speeches, the ambience of a forest, classical music, a rocket launch — and rendered in coconut husk, plastic, bronze and more.

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

September 23, 2016 by 54 Comments

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 opening in the watch’s case that maintains the watch’s sleek exterior.

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The Arduino Sleeps With The Fishes

September 23, 2016 by 8 Comments

[Eric Dirgahayu] wanted to explore underwater with some sensors and cameras. First, he needed a platform to carry them. That led to his Arduino-controlled swimming fish. The fish is made from PVC and some waterproof servos. From the video (see below) it isn’t clear how much control the fish has, but it does swim with an undulating motion like a real fish.

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Creating A PCB In Everything: Eagle, Part 2

September 23, 2016 by 31 Comments

In the last (and first) post in this series, we took a look at Eagle. Specifically, we learned how to create a custom part in Eagle. Our goal isn’t just to make our own parts in Eagle, we want to make schematics, boards, and eventually solder a few PCBs.

The board we’ll be making, like all of the boards made in this Creating A PCB In Everything series, is the Nanite Wesley, a small USB development platform based on the ATtiny85. This board has less than a dozen parts, most of which are through-hole. This is the simplest PCB I can imagine that has sufficient complexity to demonstrate how to make a board.

With that said, let’s get onto the second part of our Eagle tutorial and lay out our circuit board.

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Join Hackaday For An NYC Meetup

September 23, 2016 by 7 Comments

On the eve of the New York Maker Faire, Hackaday is throwing a meetup in the heart of Manhattan. Join us next Thursday for a low-key get-together, a few talks on assistive technologies, and a demo of the coolest new tool in recent memory.

Although these meetups are highly informal (and bringing some of the cool stuff you’ve built is encouraged), we do have a few speakers lined up. Holly Cohen and John Schimmel of DIYAbility are speaking about using homebrew devices for making everyone’s life easier. Johnny Falla of the Enable Community Foundation will give a talk about using 3D printing technology to make hyper-affordable prosthetic devices for underserved populations. Chad Leaman will be representing the Neil Squire Society and will speak about using technology to empower people with disabilities.

As always, snacks and drinks will be provided, and like all Hackaday meetups, bring some cool gear or whatever project you’re working on along with you. This bring-a-hack isn’t a competition, but if it was, we know who would win. Nisan Larea will be attending the meetup, demoing the Wazer desktop waterjet cutter. We caught a glimpse of this machine in San Francisco, and it’s amazing. If you want to see the Wazer waterjet before Maker Faire, this is your chance.

This month’s Hackaday NYC meetup will be at Pivotal Labs, 625 Avenue of the Americas, on Thursday, September 29. It would be really, really cool if you could RSVP beforehand.

This is Hackaday’s pre-game for the World Maker Faire. We’ll be attending, scoping out all the coolest projects and products from this year’s NYC Maker Faire. Find one of the Hackaday crew at the faire, and we’ll hook you up with some swag.

Finding ESP8266 Inside Big-Box Store IoT Plugs

September 23, 2016 by 44 Comments

When we buy new shiny toys, we usually open them up to at least have a look. [Scott Gibson] does the same, apparently. He found an ESP8266 module inside the EcoPlug brand WiFi-controlled wall switches.

The original device was intended to be controlled by a (crappy) app. He sniffed the UDP packets enough to send the on-off signals to an unmodified device, but where’s the fun in that? [Scott] gave it an upgrade by replacing the ESP8266’s firmware with his own and now he’s got a much more capable remote switch, one that speaks MQTT like the rest of his home automation system.

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