Flying Wing Project uses 3D Printing to Reach New Heights

A team of engineers from the Advanced Manufacturing Research Centre at the University of Sheffield have just put the finishing touches on their 3D printed Flying Wing with electric ducted fan engines — a mini electric jet so to speak.

Earlier this year they had created a completely 3D printed fixed wing UAV, which the new Flying Wing is based off of. Designed specifically for the FDM process, they were able to optimize the design so that all parts could be printed out in 24 hours flat using ABS plastic.

The new design also almost exclusively uses FDM technology — however the wings are molded carbon fibre… using a 3D printed mold of course!  The original glider weighed 2kg, and with the upgrades to the design, the Flying Wing weighs 3.5kg, with speed capabilities of around 45mph.

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8×8 LED Arrays Make for one Creepy Animated Pumpkin

[Michal Janyst] wrote in to tell us about a little project he made for his nephew in preparation for Halloween – a jack-o-lantern with facial expressions.

Pumpkin Eyes uses two MAX7219 LED arrays, an Arduino nano, and a USB power supply. Yeah, it’s pretty simple — but after watching the video you’ll probably want to make one too. It’s just so cute! Or creepy. We can’t decide. He’s also thrown up the code on GitHub for those interested.

Of course, if you want a bit more of an advanced project you could make a Tetris jack-o-lantern, featuring a whopping 8×16 array of LEDs embedded directly into the pumpkin… or if you’re a Halloween purist and believe electronics have no place in a pumpkin, the least you could do is make your jack-o-lantern breath fire.

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The Proto BuildBar is Exactly What it Sounds Like, and it Sounds Awesome

People of Dayton, Ohio have a new reason to get excited with the opening of what is perhaps the world’s first Bar/Makerspace.

Called the Proto BuildBar, it’s kind of a cross between a 3D printing lab, a makerspace, and a cafe. Hang out, drink, eat, 3D print — sounds like most hacker spaces we’ve been to, but this might just be the first one with a cafe being it’s main business model!

The World's Largest Claw Game?

It’s even home to the World’s Largest Claw game, or so they claim.

It has just opened, with a recent press event on Thursday, which was covered by a local news blog. While Dayton has long since been called a technology hub (what with Boeing and other high tech companies in the area), opening the Proto Buildbar is hoped to bring new life to the surrounding area!

For more information on Proto BuildBar (including hours of operation), you can check it out on Facebook.

[Thanks Load.Nikon!]

Star Gate LED Clock Has Plenty of Pizazz

[David Hopkins] has finally finished off his Star Gate LED clock over on Hackaday.io and it looks fantastic.

We originally featured his progress with the project in Hacklet 18 – Tick Tock, it’s Time for Clocks, and we’re happy to say it’s finally complete. The clock features 60 WS2812 LEDs to simulate the Star Gate’s chevrons — and to tell the time. Under the hood is an RTC, an Arduino Nano, an LDR and even an hourly ‘chime’. Did we mention it also automatically dims at night?

What we’re almost more impressed with is the build quality, which [David] doesn’t actually mention how he did it — regardless, it looks great! Stick around after the break to see a video of it in action, so you can really appreciate the clock’s capabilities.

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Super Smash Bros Gets a Revamp with the Microsoft Kinect

[Eric] just sent in this awesome Kinect hack that he and a few friends worked on. Playing Super Smash Bros with a Kinect.

The system makes use of two Kinects, and three PCs. The first Kinect records each individual players moves, while the second Kinect watches both players “fight” each other. The first PC runs an Nintendo 64 emulator to play the game.character selection

The second PC runs a camera with OpenCV to add another cool but perhaps unnecessary feature, you see, even the character selection is a physical process, adding to the idea of playing the entire game with your body. A glass table allows players to set their 3D printed token onto the glass, effectively placing it on the character they would like to use.

And when the match ends, a windshield wiper knocks off the losing player’s token from the table.

The third PC is responsible for running both Kinects, which then has to send the resulting commands back to first PC over a TCP connection for input into the game.

They introduced it to the public at MHacks Fall 2014, a hacking competition sponsored by Dell and Intel. Video Below.

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Controlling a Flip-Disc Display Using Android

There’s just something about electro-mechanical displays that enthralls most people when they see them; and while you’ll be hard pressed to find a split-flap display for cheap, you can still easily buy flip-disc displays! That’s what [Scott] did, and he’s been having a blast messing around with his and building a system to control it via his Android phone.

He picked up the display from a company called Alfa-Zeta in Poland, a company that’s been making electromagnetic displays since 1988. No mention of price, but it looks like some pretty awesome hardware. The beauty with electromagnetic displays is they don’t consume any electricity in idle state, making them far more efficient than almost any other display technology – not to mention perfect contrast in any lighting conditions!

They work by using permanent magnets, electromagnets, and a material that can retain magnetization. A short pulse to the electromagnet causes the disc to flip into the second position, which will then hold in place due to the permanent magnet — no more electromagnet needed.

The display comes with all the necessary hardware to drive the electromagnets and interface with a microcontroller. But, it uses the RS-485 standard, which isn’t natively supported by most other microcontrollers. [Scott’s] using an Arduino which does have an RS-485 shield, but he decided he wanted to challenge himself and build a circuit to drive them himself!

All the info is on his blog if you’re looking to try something similar. Once he had it interfaced with the Arduino it was just a simple matter of writing an Android app to transmit controls over Bluetooth for the display. Take a look:

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Using the Wrong Screw: A Painful Lesson in iPhone Repair

If you’ve ever had to repair an iPhone for a friend, you’ll know they have a ridiculous number of screws. Most companies standardize screws in their products, but since Apple doesn’t expect you to fix a phone yourself… they may have let this one slide.

You see, each of these screws is different.iPhone screws The red ones are 1.7mm long, the yellow one, 1.3mm, and the orange one, 1.2mm.

Guess what happens if you install either red or yellow screws into the orange spot, since your eyesight isn’t good enough to notice a 0.1mm difference? The screw will cut into the PCB and break several 50 micron traces, as shown in the picture above, causing a blue screen error on the phone.

Fun stuff.

[Sam Schmidt] is the owner of a repair outfit called iRepairNational, and he and his team spent a day trying to figure out the problem – it’s not exactly easy to spot. They’ve managed to repair it by cutting thin strips  of copper foil (the width of a human hair) and floating it into place using the surface tension of the flux they were using for soldering. On average it takes them around 2 hours to do the repair, though they’ve done a few in just under an hour.

Since discovering and sharing the problem, they’ve had customers around the world sending in phones for repair – often at the fault of someone else trying to repair something completely different in the phone, and then using the wrong screw as they put it all back together.