Printed Motorcycle Choke Lever Goes the Distance

We all dread the day that our favorite piece of hardware becomes so old that spare parts are no longer available for it, something about facing that mechanical mortality sends a little shiver up the hacker’s spine. But on the other hand, the day you can’t get replacement hardware is also the same day you have a valid excuse to make your own parts.

That’s the situation [Jonathan] found himself in when the choke lever for his Suzuki motorcycle broke. New parts aren’t made for his bike anymore, which gave him the opportunity to fire up Fusion 360 and see …read more http://pje.fyi/QGYCdn

Paul Jacob Evans

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Will John Deere Finally Get Their DMCA Comeuppance?

When it comes to activism, there are many different grades of activist aside from the few who you may encounter quietly and effectively working for change in their field. There are the self-proclaimed activists who sit in their armchairs and froth online about whatever their Cause is, but ultimately aside from making a lot of noise are pretty ineffectual. Then there are the Rebels With A Cause, involved in every radical movement of the moment and always out on the streets about something or other, but often doing those causes more harm than good. Activists can be hard work, at …read more http://pje.fyi/QFyGND

Paul Jacob Evans

IoT Doorman: Eye-Controlled Door for a Girl with Cerebral Palsy

Kyleigh has an eye-controlled computer on her wheelchair but something as simple as her bedroom door was still beyond her reach… until now! [Bill Binko], recently filmed a demo of an automatic, IoT door opener built for the young girl with cerebral palsy. [Bill] is a co-founder of ATMakers, an organization that enables makers interested in assistive technologies to collaborate with users to improve quality of life.

Using her eye tracking tablet (PRC Device), Kyleigh has two new icons that make the relevant call to a website, pushing a simple command to either open or close her bedroom door. The …read more http://pje.fyi/QD0xnk

Paul Jacob Evans

3D Printed Hovercraft Takes Flight

Last time we checked in on [Ivan Miranda] he was putting a drill press on the Internet. Lately, he has been trying to 3D print a hovercraft with some success. He made four attempts before arriving at one that works fairly well, as you can see in the video below. We will warn you, though, the screwdriver cam is a bit disconcerting and we suggest waiting at least an hour after you eat to watch.

The starboard impeller broke midway through the test, although with a single impeller it was working pretty well. [Ivan] thinks he can print the impeller …read more http://pje.fyi/Q9sNd4

Paul Jacob Evans

Interfacing with a Digital Speedometer

After swapping the engine out in his scooter, [James Stanley] made an unfortunate discovery. The speedometer was digitally controlled, and while the original engine had a sensor which would generate pulses for it to interpret, his new engine didn’t. Learning that the original sensor would pull the signal wire to ground each time it detected a tooth of one of the spinning gears, [James] reasoned he needed to find a way to detect the scooter’s speed and create these pulses manually.

To find the scooter’s speed, he installed a magnet on the front wheel and a hall effect sensor on …read more http://pje.fyi/Q7bN2P

Paul Jacob Evans

Hacker Challenge: Sail the Atlantic

We found it incredible that — apparently — no one has sailed an autonomous sailboat across the Atlantic successfully. Compared to an electric craft, sail-powered platforms ought to reduce having to carry batteries or other fuel and enable long-duration missions. The problem, of course, is the sailing conditions in the Atlantic.

The challenge is the focus of the Microtranssat challenge which started in 2010. You can think of the challenge as a race, but not in the conventional sense. Participants can launch their 8 foot (or less) craft any time between July and December, and it doesn’t matter which direction …read more http://pje.fyi/Q3DtvV

Paul Jacob Evans

Your Drone Is Cool, But It’s No Jet Fighter

There are some communities with whom our happy band of hardware hackers share a lot in common, but with whom we don’t often associate. The more workshop-orientated end of the car modification or railway modeler scenes, for instance, or the model aircraft fraternity. Many of these communities exist more for the activity than for the making, some of them dabble with building kits, but among them are a hard core of people who create amazing projects from scratch.

Take [Igor Negoda], for example. Not content with building just any model aircraft, he’s built his own from scratch, to his own …read more http://pje.fyi/Q1H0gq

Paul Jacob Evans