RC Paper Airplane From Guts Of Quadcopter

May 14, 2018 by 10 Comments

Mini indoor drones have become an incredibly popular gift in the last few years since they’re both cool and inexpensive. For a while they’re great fun to fly around, until the inevitable collision with a wall, piece of furniture, or family member. Often not the most structurally sound of products, a slightly damaged quad can easily be confined to a cupboard for the rest of its life. But [Peter Sripol] has an idea for re-using the electronics from a mangled quad by building his own RC controlled paper aeroplane.

[Peter] uses the two rear motors from a mini quadcopter to provide the thrust for the aeroplane. The key is to remove the motors from the frame and mount them at 90 degrees to their original orientation so that they’re now facing forwards. This allows the drone’s gyro to remain facing upwards in its usual orientation, and keep the plane pointing forwards.

The reason this works is down to how drones yaw: because half of the motors spin the opposite direction to the other half, yaw is induced by increasing the speed of all motors spinning in one direction, mismatching the aerodynamic torques and rotating the drone. In the case of the mini quadcopter, each of the two rear motors spin in different directions. Therefore, when the paper plane begins to yaw off-centre, the flight controller increases power to the appropriate motor.

Mounting the flight controller and motors to the paper plane can either be achieved using a 3D-printed mount [Peter] created, or small piece of foam. Shown here is the foam design that mounts the propellers at wing level but the 3D printed version has then under the fuselage and flies a bit better.

Making paper planes too much effort? You could always use the one-stroke paper plane folder, or even the paper plane machine gun.

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This Weekend: Hackaday X Tindie Meetup At Bay Area Maker Faire.

May 14, 2018 by 4 Comments

Maker Faire Bay Area is this weekend, and the Hackaday and Tindie crew are getting ready to jack some cupcake cars. The Bay Area Maker Faire is one of the greatest gatherings of all the cool people we know, and five years ago we started host a meetup. This Saturday, we’re blowing the roof off our favorite joint in San Mateo yet again. Join us at O’Neill’s Irish Pub for the 5th annual Hackaday x Tindie BAMF Meetup!

This meetup is a well established tradition — it’s all the cool kids at Maker Faire, hanging out in a bar. Well, all the cool 21+ kids that is. There will be blinky, there will be bring-a-hack, and there will be the people who build stuff and make things happen. This is the mixer for everyone who is passionate about hardware, and a refreshing escape from the heat and the five dollar bottles of water.

Want an idea of what’s in store for the Hackaday x Tindie Bay Area Meetup? Last year it spilled into the streets. We cajoled [Josef Prusa] to head out, we had tiny 3D printers in action, [Ben Heck] made an appearance, and someone brought a HoloLens. the MOnSter 6502 was there, slowly increasing its program counter. If you want to see the coolest DIY hardware without the dealing with the masses at Maker Faire, this is the event you want to hit up.

But wait, there’s more: HDDG is Thursday!

Are you heading to San Fransisco early? Awesome, because we’re also hosting the Hardware Developers Didactic Galactic on the Thursday before the Faire! The HDDG is our monthly expand-your-mind gathering for hardware developers in the Bay Area. We have some amazing guests that will be talking about the latest hardware they’ve been developing.

On deck for this installment of HDDG is [Tanya Fish] who has been working at Pimoroni for the past couple of years. She’ll be discussing the ‘invisible magic’ of electronics and how to explain electrons to the uninitiated. Also on board for HDDG is [Roy Jui Liang Hung], the founder of Perkūnas Studio, one of the most renowned 3D printing experts in Taiwan. He’ll be talking about 3D sculpture. Also on board is [Jason Kridner], co-founder of BeagleBone.org, who will be talking about simplifying hardware design with the BeagleBone On A Chip.

Flite Test Puts A Chair In The Air

May 14, 2018 by 22 Comments

The Flite Test crew is well known for putting some crazy flying contraptions together. They’ve outdone themselves this time with a flying IKEA chair. This build began with [Josh] issuing a challenge to [Stefan]. Take a standard IKEA ladderback chair and make it fly– in less than six hours. With such a tight schedule, measuring twice and cutting once was right out the window. This was a hackathon-style “throw it together and hope it works” build.

The chair was plenty sturdy, so it became the core of the fuselage. [Stefan] grabbed the wing from a previous plane and placed it on the seat of the chair. Two carbon fiber rods drilled into the seat frame formed a tail boom. The tailfeathers were built from Flite Test foam – paper coated foam-core board.

With the structure complete, [Stefan] and his team added servos for control, a beefy motor for power, and some big LiPo batteries. The batteries hung from the bottom of the chair to keep the center of gravity reasonable.

When the time came for the maiden flight, everyone was expecting a spectacular failure. The chair defied logic and leaped into the air. It flew stable enough for [Josh] to take his fingers off the sticks. The pure excitement of seeing a crazy build that works is on full display as the entire Flite Test crew literally jumps for joy. [Alex] even throws in a cartwheel. This is the kind of story we love to cover here at Hackaday – watching a completely nutty build come together and perform better than anyone expected.

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3D Printing Air Quality Study

May 13, 2018 by 18 Comments

You’ll often hear about some study in the media and then — on examination — find it doesn’t really apply to your situation. Sure, substance X causes cancer in rats, but they ate 8 pounds of it a day for a decade. That’s why we were glad to see [Chuck] post a series of videos about 3D printing air quality based on his practical experience. You can see the summary video, below.

[Chuck] is quick to point out that he isn’t a doctor or even a chemist. He also admits the $100 meter from IGERESS he is using isn’t necessarily high-quality test gear. Still, the data is a good guideline and he did get repeatable results.

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3D Printed Bicycle Tire Not Full Of Hot Air

May 7, 2018 by 29 Comments

To show off its new TPU filament called PRO FLEX, BigRep GmbH posted a video showing a 3D printed bike tire that uses a flexible plastic structure instead of air. The video shows them driving the bike around Berlin.

According to the company, the filament will allow the creation of a large number of industrial objects not readily built with other types of plastic. Their release claims the material has high temperature resistance, low temperature impact resistance, and is highly durable. Applications include gear knobs, door handles, skateboard wheels, and other flexible parts that need to be durable.

The material has a Shore 98 A rating. By way of comparison, a shoe heel is typically about 80 on the same scale and an automobile tire is usually around 70 or so. The hard rubber wheels you find on shopping carts are about the same hardness rating as PRO FLEX.

Obviously, a bicycle tire is going to take a big printer. BigRep is the company that makes the BigRep One which has a large build volume. Even with a wide diameter tip, though, be prepared to wait. One of their case studies is entitled, “Large Architectural Model 3D Printed in Only 11 Days.” Large, in this case, is a 1:50 scale model of a villa. Not tiny, but still.

We’ve looked at other large printers in the past including 3DMonstr, and the Gigimaker. Of course, the latest trend is printers with a practically infinite build volume.

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Hair Today, Gone Tomorrow, Via Electrolysis

May 1, 2018 by 13 Comments

We think of electrolysis as a way to split things like water into oxygen and hydrogen using electricity, but it has a second meaning which is to remove hair using electricity. An electrologist inserts very thin needles into each hair follicle and uses a burst of electricity to permanently remove the hair. [Abbxrdy] didn’t want to buy a cheap unit because they don’t work well and didn’t want to spend on a professional setup, so designing and building ensued.

You’ll have to read through the comments to find some build details and the schematic. The device uses commercial electrolysis needles and a DE-9 connector socket as a holder. The device can supply 6 to 22V at up to 2mA. A timer can restrict the pulse to 5 seconds or less.

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Today: Hackaday Is At UK Maker Faire Plus Afterparty

April 27, 2018 by No comments

As a finale to our month on the road through parts of the British Isles, we’ll be at UK Maker Faire this weekend, and we’ll also be hosting our final bring-a-hack at Maker Space Newcastle this evening, Saturday the 28th of April.

For the rest of the weekend’s UK Maker Faire, held at Newcastle’s Life Science Centre, you’ll find both Hackaday and Tindie at our booth number M118, and if you’re lucky you might even snag one of the [Brian Benchoff]-designed Tindie blinkie badge kits.

A few familiar faces from the Brits among our wider community will have their own booths, for example [Spencer] will be there with the RC2014 Z80-based retrocomputer, Rachel “Konichiwakitty” Wong will have her collection of wearables but no 3D-printed eyeballs, and Tindie seller extraordinaire [Partfusion], whose bone conduction skull radio we saw at EMF 2016 (Correction: the bone conduction radio was the work of fellow TOG stalwart [Jeffrey Roe]) and who also spoke at our Dublin Unconference.

There is still time to make your way to Geordieland to attend the event if you haven’t made plans already, and should you bring a conveniently portable hack with you then we’d love to see it. Especially if it’s a Hackaday Prize entry.