Marble machines are the kind of useless mechanisms that everybody loves. Their sole purpose is to route marbles through different paths for your viewing pleasure. They can be extremely complicated contraptions, and sometimes that is the precisely the point. However, even a simple mechanism can be delightful to watch. [Denha] just uploaded his latest creation, using a spring as elevator and a simple zig-zag path.
The construction is relatively simple, a spring with the appropriate pitch for the steel balls size is used as an elevator. The spring is driven by a small electric motor via a couple of gears, and a wooden zig-zag path for the marbles lies next to the spring. The marbles go up with the spring and return in the wooden path in an endless journey.
We believe that a serious hacker should build a marble machine at least once in their life. We have posted several of them, from simple ones to other more complicated designs that require careful craftsmanship. [Denha]’s Youtube channel is full of good ideas to inspire your first project. In any case, watching a marble machine at work is quite a nice, relaxing experience.
Continue reading “Simple Marble Machine Captivates the Eyes”
[ossum] has a baby on the way. He admits that he got a bit carried away, brimming with parental excitement. What resulted is a fully articulated LED WiFi lamp that blooms and glows dramatically in the friendly confines of the oncoming baby’s room.
We’ve covered [ossum]’s work before. As usual, he started off by showing his complete mastery of Fusion360 and making the rest of us look bad. If you want to learn 360, we recommend scrobbing through his models to see how it’s done. The base encloses an ESP8266 and a hobby servo. A clever mechanism pulls down on a stranded steel cable that runs through the stem along with some control lines for the LEDS. This opens and closes the petals. The LEDs are all held in a 3D printed frame which produces a nice even glow.
If you’d like to build one yourself, there’s a full video viewable after the break. Files are available on Thingiverse. Just make sure you tune up your printer first, this is a tough one.
Continue reading “Blooming Flower Lamp Will Test Your 3D Printer”
Latvian artist [Krists Pudzens] just put on a show in Sweden and sent us the video of his amazing kinetic sculpture. (Embedded below.) We found an arty-theory writeup of another exhibition of his to share, but we had so many technical questions that we had to write him back asking for details. And boy, did he answer.
In the video, a couple of animatronic faces watch you as crab-like rope-climber bots inch upwards and red wings flap in the background. There’s a lot of brilliant mechanisms here, and aside from whatever it all means, we just like to watch machines go.
The details! Most of the pieces are plasma-cut steel or hand-cut-and-filed aluminum, and almost all of the motors are windshield wiper motors from old Russian KAMAZ and LADA cars. In another installation, the red wings (“Red Queens’ Race”) were installed in a public square and used to track the crowd, flapping faster as people moved more quickly by.
The robotic faces also use OpenCV to track you, and stare you down. One mask is vacuum-formed plastic, and the other is a copy in polyester resin and gelcoat. Here is a video of them on their own, and another of the development.
The twin rope-climbers, “Unbalanced Force”, just climb upwards at different paces. We were more than a little curious about what happens to the rope-climbers when they reach the top. [Krists] says the gallery staff grabs ladders and goes to fetch them. When he exhibited them in Poland on 20m ropes, they actually had to hire professional climbers. Life imitates art.
Some of us here at Hackaday are suckers for tech-art, whether it’s 3D-printed baroque columns, dancing with metal-bending machines, or just glowing globs of ferrofluid. There’s a lot of the same “wonder what would happen if…” tendency in the hacker and the artist — seeing possibilities and making them real.
Continue reading “Art and Creepy Mechanisms”
It’s true that a lot of the projects we feature here (and build ourselves) are created to accomplish some sort of goal. But, many times the project itself is the goal. That’s the case with [Proto_G’s] self-oscillating pneumatic machine, which he built with no particular use in mind.
Continue reading “Oscillating Pneumatic Mechanism Doesn’t Need a Purpose”
[Nguyen Duc Thang]’s epic 2100 Animated Mechanical Mechanisms is one of the best YouTube channels we’ve ever seen. A retired mechanical engineer, [Nguyen Duc Thang] has taken on an immense challenge: building up 3D models of nearly every imaginable mechanism in Autodesk Inventor, and animating them for your amusement and enlightenment. And, no, we haven’t watched them all for you, but we’re confident that you’ll be able to waste at least a couple of hours without our help.
If you’re actually looking for something specific, with this many mechanisms demonstrated, YouTube is not the perfect lookup table. Thankfully, [Nguyen Duc Thang] has also produced a few hundred pages of documentation (PDFs, zipped) to go along with the series, with each mechanism classified, described, and linked to the video.
This is an amazing resource as it stands, and it’s probably a good thing that we don’t have access to the 3D files; between the filament cost and the time spent shepherding our 3D printer through 2,100 mechanisms, we’d be ruined. Good thing we don’t know about the Digital Mechanism and Gear Library or KMODDL.
Thanks [alnwlsn] for the tip!
Continue reading “2,100 Mechanical Mechanisms”
Reader, [klemens], suggested DMG Lib to us when we posted about a similar site. DMG-Lib is an amazing source of information. It’s primary downside is that a great portion of the text is in a language other than English, though in some ways this is a plus. Latin, Italian, German, and many other languages held the position of being the chief scientific language of the world long before English, and this repository holds entire books about mechanisms in those languages. Some of the books range all the way back to the 1500s. The mechanism animations are very good on this site and play smoothly. While it’s a little harder to search than KMODDL due to the language oddities, it’s still an extremely useful and interesting site to add to the hacker’s information toolbox.
Computers are relatively new still, but we’ve had mechanics for a very long time. KMODDL keeps us from reinventing the wheel. It contains collections of mechanisms with descriptions, pictures, and even videos. We were working on a arbalest design not too long ago, and we were having trouble coming up with a clever ratchet design for one of the parts. We spent a few moments in KMODDL looking through the ratchet section of the Reuleaux collection, and soon after we had the basic building blocks of our design. Sure there are books you could buy that do a similar thing, but KMODDL is completely free, very in depth, and easier to search. Plus, with a useful tool like this you might not even have to take apart all your appliances anymore to see how they work. My first sewing machine might have lived a longer life had I seen this first. Anyone know of more resources like this?