Want to start your own collection of retro computers, for free? Well graphic designer [Rocky Bergen]’s collection of paper craft models might be the answer. [Rocky] has designed over a dozen models of old computers, including classics such as the IMSAI 8080, Commodore Pet, and the BBC Microcomputer to name just a few.
The completed size of these models isn’t mentioned, but inspecting the PDF file of a randomly selected Commodore C64 model shows it was intended to be printed on A3 paper ( 297 x 420 mm, or roughly the size of an 11 x 17 ANSI C page if you think better in inches ). That still doesn’t give us the finished size of a model, but one collector posted on [Rocky]’s site that when he scaled it to A4 paper, the resulting computer was a perfect match for use with common 1/6 scale dolls and dollhouses (also known as playscale). Of course, the pattern existing as a computer PDF file, you can scale it to any size you want.
[Stephen] started with a model (Update: [kongorilla’s] 2012 low poly mask model from back in 2012 was the starting point for this hack) from the papercraft program Pepakura Designer, then milled out dozens of boards. Only a few of them support circuitry, but it was still quite the time-consuming process. The ATMega32u4 on the forehead along with the fold-traversing circuitry serve to light up the WS2812B eyes. Power runs up the copper tube, which doubles as a handy mounting rod to connect to the 3D-printed base.
To be fair, eighteen months out of the two years this project took was spent hand-sanding a chamfer on every edge of every panel so that they could be glued together. Soldering the edges together didn’t work as well as you might think, so [Stephen] used Superglue mixed with baking soda to give it body and make it dry faster. The result is a low-poly human face of shiny copper with TQFP-44 chip package a the all-seeing eye in the middle of its forehead like something from Tron come to life.
We’ve all had that moment of seeing a product that’s an object of desire, only to realize that it’s a little beyond our means. Many of us in this community resolve to build our own, indeed these pages are full of projects that began in this way. But few of us have the audacity of [vcch], who was so taken with the QLockTwo expensive designer word clock that they built their own using the facsimile of its face on the front of QLock’s own catalogue. The claim is that this isn’t an unauthorized copy as such because no clock has been copied — as far as we’re aware there’s nothing against taking the scissors to a piece of promotional literature, and it certainly differs from the usual word clocks we’ve seen.
So how has this masterpiece of knock-off engineering been performed? The catalog cover has a high-quality cut-out rendition of the clock face, and the pages behind are thick enough to conceal an addressable LED. By cutting slots through the pages enough space is created for strips of LEDs, which are then hooked up to a Wemos D1 that runs the show. The software is provided, et voila! A faithful facsimile of the original QLockTwo, in part produced by QLock themselves. We applaud the ingenuity involved, but like [vcch] we’d say that if you like the QLockTwo then perhaps you’d like to consider buying one.
Most readers will be familiar with the work of the Dutch artist Theo Jansen, whose Strandbeest wind-powered mechanical walking sculptures prowl the beaches of the Netherlands. The Jansen linkage provides a method of making machines with a curious but efficient walking gait from a rotational input, and has been enthusiastically copied on everything from desktop toys to bicycles.
One might think that a Jansen linkage would be beyond some materials, and you might be surprised to see a paper one. Step forward [Luis Craft] then, with a paper walking Strandbeest. Designed in Blender, cut on a desktop CNC paper cutter, and driven by a pair of small robots linked to an Arduino and controlled by a Bluetooth link, it has four sets of legs and can push around desktop items. We wouldn’t have thought it possible, but there it is.
He claims that it’s an origami Strandbeest, but we’re not so sure. We’re not papercraft experts here at Hackaday, but when we put on our pedantic hat, we insist that origami must be made of folded paper in the Japanese style rather than the cut-and-glue used here. This doesn’t detract from the quality of the work though, as you can see in the video below.
Some time ago, [Trammell Hudson] took a shot at creating a tool that unfolds 3D models in STL format and outputs a color-coded 2D pattern that can be cut out using a laser cutter. With a little bending and gluing, the 3D model can be re-created out of paper or cardboard.
There are of course other and more full-featured tools for unfolding 3D models: Pepakura is used by many, but is not free and is Windows only. There is also a Blender extension called Paper Model that exists to export 3D shapes as paper models.
What’s interesting about [Trammell]’s project are the things he discovered while making it. The process of unfolding an STL may be conceptually simple, but the actual implementation is a bit tricky in ways that have little to do with number crunching.
For example, in a logical sense it doesn’t matter much where the software chooses to start the unfolding process, but in practice some start points yield much tighter groups of shapes that are easier to work with. Also, his software doesn’t optimize folding patterns, so sometimes the software will split a shape along a perfectly logical (but non-intuitive to a human) line and it can be difficult to figure out which pieces are supposed to attach where. The software remains in beta, but those who are interested can find it hosted on GitHub. It turns out that it’s actually quite challenging to turn a 3D model into an unfolded shape that still carries visual cues or resemblances to the original. Adding things like glue tabs in sensible places isn’t trivial, either.
If you’ve been hanging around Hackaday for any length of time, you’ve undoubtedly seen the work of [Niklas Roy]. A prolific maker of…everything, we’ve covered his projects for over a decade now. He’s one of an elite group of hackers who can say they’ve been around since Hackaday was still using black & white pictures. Yet sometimes projects fall through the cracks.
Thanks to a tip sent in from one of our beloved readers, we’re just now seeing this incredible cardboard plotter [Niklas] made for a workshop he ran at the University of Art and Design Offenbach several years ago. The fully manual machine is controlled with two rotary dials and a switch, and it even comes with a book that allows you to “program” it by dialing in specific sequences of numbers.
Not that it detracts from the project, but its worth mentioning that the “cardboard” [Niklas] used is what is known as Finnboard, a thin construction material made of wood pulp that looks similar to balsa sheets. The material is easy to work with and much stronger than what we’d traditionally think of as cardboard. Beyond the Finnboard, the plotter uses welding rods as axles and slide rails, with glue, tape, and string holding it all together.
The dials on the control panel correspond to the X and Y axes: turning the X axis dial moves the bed forward and backward, and the Y dial moves the pen left and right. The switch above the dial lowers and raises the pen so it comes into contact with the paper below. With coordination between these three inputs, the operator can either draw “freehand” or follow the sequences listed in the “Code Book” to recreate stored drawings and messages.
Pinball still has that bit of magic that makes it stand out from first person shooters or those screen mashers eating up your time on the bus. The secret sauce is that sense of movement and feedback, and the loss of control as the ball makes its way through the play field under the power of gravity. Of course the real problem is finding a pinball machine. Pinbox 3000 is swooping in to fix that in a creative way. It’s a cardboard pinball machine that you build and decorate yourself.
Pinbox with electronics
Pinbox with bell
Pinbox with plastic packaging as obstacles
We ran into them at Maker Faire New York over the weekend and the booth was packed with kids and adults all mashing flippers to keep a marble in play. The kit comes as flat-pack cardboard already scored and printed with guides for assembly which takes about an hour.
The design is quite clever, with materials limited to just cardboard, rubber bands, and a few plastic rivets. Both the plunger that launches the pinball and the flippers are surprisingly robust. They stand up to a lot of force and from the models on display it seems the friction points of cardboard-on-cardboard are the issue, rather than mechanisms buckling under the force exerted by the player.
When first assembled the playfield is blank. That didn’t stop the fun for this set of kits stacked back to back for player vs. player action. There’s a hole at the top of playfields which makes this feel a bit like playing Pong in real life. However, where the kit really shines is in customizing your own game. In effect you’re setting up the most creative marble run you can imagine. This task was well demonstrated with cardboard, molded plastic packaging (which is normally landfill) cleverly placed, plus some noisemakers and lighting effects. The company has been working to gather up inspiration and examples for building out the machines. We love the multiple layers of engagement rolled into Pinbox, from building the stock kit, to fleshing out a playfield, and even to adding your own electronics for things like audio effects.
Check out the video below to see the fun being had at the Maker Faire booth.