Cutting Edge Of 3D Printing Revealed At Last Weekend’s Midwest RepRap Festival

March 26, 2018 by Brian Benchoff 47 Comments

The last three days marked the 2018 Midwest RepRap Festival. Every year, the stars of the 3D printing world make it out to Goshen, Indiana for the greatest gathering of 3D printers and printing enthusiasts the world has ever seen. This isn’t like any other 3D printing convention — everyone here needs to take the time to get to Goshen, and that means only the people who want to be here make it out.

Over the weekend we covered some amazing hacks and printer builds from MRRF. The ‘BeagleBone On A Chip’ has become a complete solution for a 3D printer controller. This is a great development that takes advantage of the very under-used Programmable Real-Time Units found in the BeagleBone, and will make an excellent controller for that custom printer you’ve been wanting to build. E3D has announced they’re working on an automatic tool-changing printer. It’s a slight derivative of their now-defunct BigBox printer, but is quite possibly the best answer to multi-material filament printers we’ve ever seen. There’s some interest from the community, and if everything goes well, this printer may become a kit, or something of the sort. Filament splicing robots also made an appearance at this year’s MRRF, and the results are extremely impressive. Now you can create multi-color prints with the printer you already own. Is it expensive? Yes, but it looks so good.

This wasn’t all that could be found at MRRF. There were hundreds of printers at the event, and at last count, over 1300 attendees. That’s amazing for a 3D printer convention that is held every year in the middle of nowhere, Indiana. What were the coolest sights and sounds coming out of MRRF this year? Check out the best-of list below.

Continue reading “Cutting Edge Of 3D Printing Revealed At Last Weekend’s Midwest RepRap Festival” →

Hackaday Links: March 25, 2018

March 25, 2018 by Brian Benchoff 26 Comments

File this one under, ‘don’t do this yourself, but we’re glad they filmed it.’ [Denis Koryakin] flew a quadcopter to 10km, or about 33,000 feet. This was just an experiment to see if it was possible. A few items of note from the video: this thing was climbing at 14-15 m/s when it first took off. It was barely climbing at 2 m/s at 10km. Second: it was really, really cold. The ground temperature was -10 C, and temperatures at 8km reached -50 C. Density altitude is on this guy’s side, and I don’t know if this would be possible in warmer temperatures.

Hold on to your hats, there’s a gigantic space station that’s going to crash sometime in the next few weeks. Tiangong-1, an 8-ton space station launched in 2011, is going to reenter the atmosphere ‘sometime between March 30 and April 6’. Because of orbits and stuff, it’s more likely to reenter at the highest latitudes, and this space station has an inclination of 42.7 degrees. If your latitude is 42° N or 42° S, you should probably pull a Liza Minnelli on this situation and spend the next month in bed.

Hey, cool! The Tindie Badge is being used to teach orphans in Bosnia how to solder.

The BBC has decided to cancel Robot Wars. No, it’s not Battlebots — the house robots always seemed to be a bit overkill and added too much drama. No, it’s not Scrapheap Challenge or Junkyard Wars, but Robot Wars was legitimately fun, and cheap-to-produce reality TV. The engineering that went into these bots was amazing, and this is a loss for the entire engineering community. Here’s a change.org petition against its cancellation, but we all know how successful those change.org petitions can be.

FREE CHIPS!. Free motor drivers, actually, which is even more impressive. Aisler puts together BOMs for projects and such — think of it as an on-demand kitting service. They’re throwing in free Trinamic drivers with orders. Someone should build a motor driver breakout.

Hackaday Visits World’s Oldest Computer Festival: TCF 43

March 23, 2018 by Tom Nardi 10 Comments

I was fortunate enough to visit the Trenton Computer Festival last weekend. The show struck a very interesting mix of new and old, commercial and educational. Attendees were writing programs in BASIC on an Apple I (courtesy of the Vintage Computer Federation) not more than five feet from where students were demonstrating their FIRST robot.

The one-day event featured over fifty demonstrations, talks, and workshops on topics ranging from a crash course in lock picking to the latest advancements in quantum computing. In the vendor room you could buy a refurbished laptop while just down the hall talks were being given on heady topics such as using neural networks and genetic algorithms for day trading on the stock market.

Recent years have seen a widening of the content presented, but TCF’s longevity means there is a distinct “vintage” vibe to the show and the culture surrounding it. Many of the attendees, and even some of the presenters, can proudly say they’ve been attending since the very first show in 1976.

There was simply too much going on to see everything. At any given time, there were eleven talks happening simultaneously, and that doesn’t include the demonstrations and workshops which ran all day. I documented as many highlights from this year’s TCF as I could for those who haven’t had a chance to visit what might be the most low-key, and certainly oldest, celebration of computing technology on the planet. Join me after the break for the whirlwind tour.

Continue reading “Hackaday Visits World’s Oldest Computer Festival: TCF 43” →

Mechanisms: Cable Ties

March 22, 2018 by Dan Maloney 63 Comments

Zip ties, Ty-Raps, cable ties; call them what you will, but it’s hard to imagine doing without these ubiquitous and useful devices. Along with duct tape and hot glue, they’re part of the triumvirate of fasteners used to solve nasty problems quickly and cheaply. They’re next up on the list of mechanisms we find fascinating, and as it turns out, there’s more to these devices than meets the eye.

Continue reading “Mechanisms: Cable Ties” →

Making Pictures Worth 1000 Words In Python

March 21, 2018 by Tom Nardi 16 Comments

In a previous post, I showed how you could upload images into a Discord server from Python; leveraging the popular chat platform to simplify things like remote monitoring and push notifications on mobile devices. As an example, I showed an automatically generated image containing the statistics for my Battlefield 1 platoon which gets pushed to member’s devices on a weekly basis.

Automatically generated stats posted to Discord

The generation of that image was outside the scope of the original post, but I think it’s a technique worth discussing on its own. After all, they say that a picture is worth 1000 words. So that means a picture that actually contains words must be worth way more. Like, at least 2000, easy.

Being able to create images from your textual data can lend a bit of flair to your projects without the need to create an entire graphical user interface. By putting a text overlay on a pre-rendered image, you can pull off some very slick visuals with a minimum amount of system resources. So long as you have a way of displaying an image file, you’re good to go.

In this post I’ll quickly demonstrate how to load an image, overlay it with text, and then save the resulting image to a new file. This technique is ideal in situations where a display doesn’t need to be updated in real-time; visuals can be generated at regular intervals and simply displayed as static images. Possible uses include weather displays, “magic” mirrors, public signage, etc. Continue reading “Making Pictures Worth 1000 Words In Python” →

Friday Hack Chat: All About The Hackaday Prize

March 21, 2018 by Brian Benchoff 1 Comment

For this week’s Hack Chat, we’re talking all about the Hackaday Prize. Our guests for this week’s Hack Chat are Alberto Molina and Elecia White.

Elecia White was a Hackaday Prize judge in 2015 and 2016, and she’ll be discussing what makes a standout entry from a judging perspective. Elecia is an embedded software engineer at Logical Elegance, Inc., author of Making Embedded Systems, and host of the Embedded.fm podcast.

Alberto Molina won the Grand Prize of the 2016 Hackaday Prize with Dtto, an Open Source, self-reconfiguring rescue robot that Alberto is continuing to develop. Alberto is an Electronic engineer who wants to design the next generation of robots and he will share his insights on putting together a fantastic entry for your project.

The Hackaday Prize is the greatest hardware competition ever. It’s the Academy Awards of Open Hardware (and will remain so until we get a cease and desist). The Hackaday Prize is a competition where thousands of hardware hackers, makers, and artists compete to build a better future.

The Hackaday Prize is in its fifth year in 2018, and the theme this year is Build Hope. We’re challenging everyone to put your ideas and creativity to use and Build Something That Matters. Do this, and you’ll be in the running for the Grand Prize of $50,000. In total we’re giving away $200,000 in total cash prizes to build hardware, something no other hardware competition can match.

Also on board for this Hack Chat, like all Hack Chats, will be Stephen Tranovich, Technical Community Leader at Hackaday.io. Steven has been working hard on the logistics for the Prize this year, and will field any and all questions about entering the 2018 Hackaday Prize.

In this Hack Chat, we’ll be discussing how the Prize is judged, the new challenges for the 2018 Hackaday Prize, the achievements the winners of the Hackaday Prize have already seen, and of course, your questions. We know there’s a lot of interest in the Hackaday Prize, and we want you to ask what’s on your mind. If you have a question, just add it to the Hack Chat event page as a comment, and we’ll answer it.

Our Hack Chats are live community events on the Hackaday.io Hack Chat group messaging. This week it’s going down at the usual time, on noon, Pacific, Friday, March 23rd Want to know what time this is happening in your neck of the woods? Have a countdown timer!

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on Hackaday.io.

You don’t have to wait until Friday; join whenever you want and you can see what the community is talking about.

Hackaday’s Irish Excursion Is On 7 April

March 21, 2018 by Mike Szczys 7 Comments

Try something a bit out of the ordinary with us on 7 April. Spend a Saturday with Hackaday in Dublin without really knowing what to expect. This is the Unconference format, and we’ve fallen in love with the spontaneity and consistently fascinating talks that come out of it.

We’ve booked a fantastic hall in the Temple Bar district of Dublin, lined up snacks throughout the day and dinner for all who attend, plus there’s an after bar and we’ll buy the first round. All of this is yours if you grab one of the rapidly disappearing free tickets.

What we ask of you is to come prepared to give a 7 minute talk on something you’re really excited about right now. This is low-pressure; the point of an Unconference is to learn about what people are working on right now (not to see a 40 minute talk that was polished over several months). There will not be enough time for absolutely everyone to speak but we’ll get through as many as we can and make sure there’s an interesting mash-up of topics throughout the day.

To break the ice, we have a few “ringers” who we’ve asked to lead off each talk session. Beth ‘pidge’ Flanagan is an embedded and Linux expert who is well-known for her work on OpenEmbedded and Yocto and will talk about “how the sausage is made” specifically surrounding some advance metering infrastructure. Rachel “Konichiwakitty” will be speaking. Rachel was at our London Unconference back in September and we’re excited to hear about the stem cell research she’s been doing as part of her Ph.D. work. James Twomey will be on hand to go into some of the craft of stage magic, and also talk about what we can learn from the battery-free magic of crystal set radios like the “foxhole” radios built during WWII.

There are already enough people to pack the place and we only have about 20 tickets left, so hurry up and grab yours.

This event is made possible, free of charge to the attendees, with generous support from DesignSpark, the innovation arm of RS Components. DesignSpark is the exclusive sponsor of the Hackaday Dublin Unconference.