The concept of a time lock is an old one, and here you can see an example of the clockwork and gears version that kept vaults sealed against unauthorized openings. Even if the correct combination was known, these devices prevented opening until a pre-arranged amount of time had passed. The fine folks at [Industrial Alchemy] got a copy of a Yale Triple L mechanical time lock, and like other devices of its kind it required manual winding to function. Since the device as a whole was sealed against tampering, winding and setting was done with a key via the small holes in the front.
These devices were mounted on the inside of a vault door, and worked by mechanically interfacing with the lock mechanism in a variety of different ways depending on make and model. While the time lock was engaged, opening the door was prevented even if the correct combination was used. You may notice the multiple movements; this was for redundancy. The movements were interfaced in a mechanical OR arrangement, meaning that the first one to count down to zero would disengage the time lock. In the case of a malfunction, the backup movements would be responsible for preventing a total lockout — a condition as inconvenient and embarrassing as it would be costly.
Embedded below is a video that focuses on swapping movements in a time lock, but happens to also do a good job of showing off the mechanical design and components. Clockwork was the high technology of its time, and interest in it has seen something of a resurgence now that 3D printing is commonplace.
Continue reading “Gaze Upon This Intricate Victorian-Era Time Lock”
It may only run for a brief time, and it’s too big for use in an actual wristwatch, but this 3D-printed tourbillon is a great demonstration of the lengths watchmakers will go to to keep mechanical timepieces accurate.
For those not familiar with tourbillons, [Kristina Panos] did a great overview of these mechanical marvels. Briefly, a tourbillon is a movement for a timepiece that aims to eliminate inaccuracy caused by gravity pulling on the mechanism unevenly. By spinning the entire escapement, the tourbillon averages out the effect of gravity and increases the movement’s accuracy. For [EB], the point of a 3D-printed tourbillon is mainly to demonstrate how they work, and to show off some pretty decent mechanical chops. Almost the entire mechanism is printed, with just a bearing being necessary to keep things moving; a pair of shafts can either be metal or fragments of filament. Even the mainspring is printed, which we always find to be a neat trick. And the video below shows it to be satisfyingly clicky.
[EB] has entered this tourbillon in the 3D Printed Gears, Pulleys, and Cams Contest that’s running now through February 19th. You’ve still got plenty of time to get your entries in. We can’t wait to see what everyone comes up with!
Continue reading “3D-Printed Tourbillon Demo Keeps The Time With Style”
What could be cuter than a little robot that scuttles around its playpen and smiles all day? For the 2018 Hackaday prize [bobricius] is sharing his 2D Actuator for Micro Magnetic Robot. The name is not so cute, but it boasts a bill of materials under ten USD, so it should be perfect for educational use, which is why it is being created.
The double-layer circuit board hides six poles. Three poles run vertically, and three of them run horizontally. Each pole is analogous to a winding in a stepper motor. As the poles turn on, the magnetic shuttle moves to the nearest active pole. When the perpendicular windings activate, it becomes possible to lock that shuttle in place. As the windings activate in sequence, it becomes possible to move left/right and forward/back. The second video demonstrates this perfectly.
[bobricius] found inspiration from a scarier source, but wants us to know this is his creation, not a patent infringement. We are not lawyers.
Continue reading “Smiling Robot Moves Without Wires”
As if building tiny mechanisms with dozens of moving parts that all need to mesh together perfectly to work weren’t enough, some clock and watchmakers like to put their horology on hard mode with tourbillon movements. Tourbillons add multiple axes to the typical gear trains in an attempt to eliminate errors caused by the influence of gravity — the movement essentially spins on gimbals while tick-tocking away.
It feels like tourbillons are too cool to lock inside timepieces meant for the ultra-rich. [Alduinien] agrees and democratized the mechanism with this 3D-printed tourbillon. Dubbed “Hawkeye,” [Alduinien]’s tourbillon is a masterpiece of 3D printing. Composed of over 70 pieces, the mechanism is mesmerizing to watch, almost like a three-axis mechanical gyroscope.
The tourbillon is designed to be powered either by the 3D-printed click spring or by a small electric motor. Intended mainly as a demonstration piece, [Alduinien]’s Thingiverse page still only has the files for the assembled mechanism, but he promises to get the files for the individual pieces posted soon. Amateur horologists, warm up your 3D-printers.
Tourbillons are no stranger to these pages, of course. We’ve done an in-depth look at tourbillons for watches, and we’ve even featured a 3D-printed tourbillon clock before. What we like about this one is that it encourages exploration of these remarkable instruments, and we’re looking forward to seeing what people do with this design. For those looking for more background on clock escapements in general, [Manuel] wrote a great article on how we turned repetitive motion into timekeeping.
Continue reading “Hawkeye, The 3D-Printed Tourbillon Movement”
VR is an area that is seeing plenty of DIY experimentation, and [FultonX] has an interesting hack of sorts in that he’s discovered something that meshes well with how we perceive motion and movement. It’s an experimental movement system for VR he calls the Ninja Run, and it somewhat resembles skiing.
Even room-scale VR suffers from the fact that the player is more or less stuck in one place. Moving the player from one spot to another isn’t currently a gracefully solved problem, and many existing methods are not immersive or have other drawbacks. One solution in use is a sort of teleportation, another “slides” the player to another area on command (like gliding across ice). [FultonX] found these existing solutions lacking, and prototyped the Ninja Run concept which he found was surprisingly intuitive and effective. Video demo embedded below.
Continue reading “The Ninja Run: A VR Movement Experiment”
[Ico Doornekamp] sent us his ultrasonic-entirely code based-thermin project in response to yesterdays Virtual theremin. By using the programming environment Pure Data, he is able to transform his laptop into a dual input device (while only using a single microphone) without modification. By being so open-ended theoretically anyone can have a theremin within a few moments of downloading, but he does mention it might not work on all hardware.
Also in relation to yesterday’s use of a Wii remote [blobKat] let us know about his thesis project, performance based music making. After studying the connection between musicians and their use of laptops decided that they would want more interaction and movement in their music creation. He combined gesture recognition and synth based movement with Wii remotes to achieve his ends. The video above is an explanation and example of his efforts.
When you need something quietly bending or moving, don’t underestimate SMA’s (or Shape Memory Alloys). The Living Glass project by architects [David Benjamin] and [Soo-in Yang] catalogs an experiment in building interactive, flexible, “breathing”, walls out of SMA wire and microcontrollers. Although they use Basic Stamps, the project could easily be extended to more cost-effective microcontrollers for large surfaces. The project is well documented with videos (AVI) of each prototyping step and even includes the ideas that were ultimately scrapped. Even if you don’t build a wall of interactive gills, this project should give you plenty of ideas for uses of SMA wire embedded in semi-flexible materials.