In case you don’t know, our hacker brethren in Europe are pretty darn sophisticated with their hackerspaces — most of them even implement the Hackerspace API which tells the public when they are open, or closed. This allows them to tap in with hardware to create a fancy notifications for when the spaces are open!
Shackspace, the place to be in Stuttgart, had a nice big map of Europe destined for world domination in their lounge. They thought it could use an upgrade, so have been adding LEDs to represent each hackerspace. They glow green when open, and red when closed. And they built it all in one weekend flat.
If your space is not on the map, start using the Space API and let them know so they can update their project!
Sadly Shackspace in Stuttgart was not one of the hackerspaces we had the pleasure of touring during our European Hackerspace Tour!
The Hackaday Prize was about to launch but the date wasn’t public yet. I decided to do a pre-launch tour to visit a few places and to drop in on some of the Hackaday Prize Judges. It started in Chicagoland, looped through San Francisco for a hardware meetup and Hardware Con, then finished with visits to [Ben Krasnow’s] workshop, [Elecia White’s] studio, and the Evil Mad Scientist Laboratories.
The Prize is now running and it’s time for you to enter. Look at some of the awesome hacking going on at the places I visited and then submit your own idea to get your entry started. Join me after the break for all the details of the adventure.
Continue reading “Crazy Whirlwind Pre-Hackaday Prize Launch Tour”
Many hobbyists and hackerspaces have the $500 Chinese 40W lasercutters which most of us know are about as successful at etching metals as a featherduster is at drilling. [Frankie] and [Bryan] have figured out a way to use the laser to chemically activate an etching process. See experiment part 2 as well.
First, to be clear, they are using a quality 40W Epilog Zing, not the cheap one, but40W is40W. They mixed the plaster (calcium sulfate) with Isopropyl until it resembled white ketchup. After either thinly painting or airbrushing the material onto the stainless surface (both worked), the mixture is dried with a heatgun then put into the laser. 100% power and 5% speed was what worked for them.
The result was an engrave with a noticeable bite. Something they claim had no effect at all without the mixture.
Stainless steel is an alloy of iron and some chromium – not the same as chrome-plated steel. [Frankie]’s explanation of the chemistry is that the surface layer of the stainless is a transparent chromium oxide. With the heat of the laser, the calcium and chromium swap dance partners. Calcium takes the oxygen and chromium takes the sulfate. The calcium oxide washes off but the chromium sulfate causes the etch.
Next time you’re at your local space, give this a try.
Part of our whirlwind UK visit took us to Cambridge, where we had the joyous opportunity to check out Cambridge Makespace. The main space was formerly part of the Institute for Manufacturing Robot Lab at Cambridge University, so it has a long heritage of supporting engineering innovation. Continue reading “Hackerspace Tours: Cambridge Makespace”
The Cairo hackerspace needed a projector for a few presentations during their Internet of Things build night, and of course Friday movie night. They couldn’t afford a real projector, but these are hackers. Of course they’ll be able to come up with something. They did. They found an old slide projector made in West Germany and turned it into something capable of displaying video.
The projector in question was a DIA projector that was at least forty years old. They found it during a trip to the Egyptian second-hand market. Other than the projector, the only other required parts were a 2.5″ TFT display from Adafruit and a Nokia smartphone.
All LCDs are actually transparent, and if you’ve ever had to deal with a display with a broken backlight, you’ll quickly realize that any backlight will work, like the one found in a slide projector. By carefully removing the back cover of the display, the folks at the Cairo hackerspace were able to get a small NTSC display that would easily fit inside their projector.
After that, it was simply a matter of putting the LCD inside the display, getting the focus right, and mounting everything securely. The presentations and movie night were saved, all from a scrap heap challenge.
On the way back from Hackaday Munich a couple of us got the chance to stop off in the UK, so we thought we’d take the opportunity to visit London Hackspace. With close to 1100 members and more than 6500 sq ft of space over two floors, it has to be one of the largest hackerspaces we’ve seen. [Russ Garrett] and [Jasper Wallis] were kind enough to show us around. Continue reading “Hackerspace Tours: London Hackspace”
Members of the Rabbit Hole hackerspace spent the last weekend competing in The Deconstruction, a 48 hour hackathon competition. The hackerspace’s theme was “Light it up!”, so members created some awesome projects involving light. The star of the show was their bacon cooking machine. The Rabbit hole made the “Push Button. Receive Bacon” meme real.
A broken laser printer was gutted for its drive train and fuser assembly. Laser printer fusers are essentially hot rollers. The rollers melt toner and fuse it with paper as it passes through the printer. The heat in this case comes from a lamp inside the roller. That lamp also puts out plenty of light, which fit perfectly with the team’s theme.
The Rabbit Hole members wasn’t done though, they also built a pocket-sized infinity mirror from an empty Altoids tin. The bottom of the tin was cut out, and a mirror glued in. A filter from a broken projector made a perfect half silver mirror, and some LEDs completed the project.
The members also built a fandom art piece, consisting of 25 fans connected together in a skull shape. The eye and nose fans were lighted. When the fans were plugged in, they kicked for a few seconds before spinning up. Once they did spin though – there was a mighty wind in the Rabbit Hole.
Click past the break for The Rabbit Hole’s Deconstruction video!
Continue reading “Push Button, Receive Bacon.”