The image to the left doesn’t make this look like much, but inside of the cardboard vending machine lives a clever Rube-Goldberg device. The video after the break gives a look at the inner workings to show how a quarter manages to dispense a full can of Coke. But that’s about all the detail we get on the project.
There are two sets of counterweights used in the design. Some marbles, and what look like giant pinballs. The coin chute, located on the left side of the venting machine, funnels the money into the waiting marble. When the marble rolls off it lands on a spoon. The weight rotates the spoon-filled disk and causes one of the waiting pinballs to drop from their rack. As that metal ball falls it operates a ratcheting system to dispense just one can. It looks like the capacity of the machine is limited to two refreshing cans of sugary liquid, but that could be scaled up if more room were made for cans and counterweights alike.
Continue reading “Rube-Goldberg provides liquid refreshment”
Cardboard box computer
[Alistair] chapman had a Laptop with a broken screen sitting in his parts bin. He knew he had an LCD panel on hand that would probably work with it, but it wouldn’t fit in the case. His solution was to transplant all the computer parts into a cardboard box from a motherboard.
This violin is garbage
The kids in this orchestra live in a villiage built on top of a landfill. But they make the most out of what they have. This orchestra is composed of instruments built from garbage and they seem to work pretty well. [Thanks Bruce]
More LED mystery puzzles
[Henryk] is at it again. He puts together some very impressive circuits that play tricks on your engineering mind. His latest is three LEDs in series. Look closely and you’ll see they’re not performing as expected. Watching the solution to one of his previous puzzles will help you figure out how he’s doing it. His work is simply amazing.
Netbook framed as a dedicated weather station
Not wanting to get rid of old but still working hardware, [Retro Toaster] built a dedicated weather station by mounting the screen, keyboard, and track pad in a picture frame.
Current and voltage testing your USB projects
This dev board is a pass-through for USB devices. It makes voltage and current testing your device quite simple.
Lucas came up with a real winner when upcycling cardboard to use as a bookshelf. It’s visually pleasing, can be built basically for the cost of glue and a mounting brackets, and you don’t have to feel bad if you decide to get rid of it later on.
What he saved in raw material cost he spent in labor. There are 23 different layers of cardboard that went into the project, not including the spacer squares between each piece. The vast majority of the time spent in the clip after the break shows a fast-time video of him cutting out the layers. It apparently took about eight hours of cutting, and we’d image he’s got a claw of a hand after all of that work.
This is hanging from a single L bracket positioned in the square opening with two nails to keep it level. We’d suggest including a better mounting technique in your design. If you have some ideas about this please let us know in the comments.
Continue reading “Make a cardboard bookshelf in less than a day”
If you’ve ever had to replace a bicycle, [Izhar Gafni] is your man. He created a bicycle made completely out of cardboard that is strong enough to support the largest riders and costs about the same as combo meal at McDonald’s.
[Izhar]’s bikes are made from varying thicknesses of cardboard, the thickest sheet being about an inch wide. After cutting and gluing these pieces of cardboard together, [Izhar] submerges them in resin and brushes on a little paint creating an incredibly strong, very light, and unbelievably inexpensive bike.
[Izhar] says the cost of production is about $10 per bike and estimates it could be sold for $60 to $90, cheaper than even the most inexpensive metal bike. If you’ve ever had a bike stolen, you know the sting of having to replace your main means of transportation. [Izhar] says his bike is so cheap thieves wouldn’t even bother taking it off your hands.
You can check out the awesome video of [Izhar] making a cardboard bike after the break.
Continue reading “Bike made from cardboard is too cheap to steal”
Browsing around today, I saw this little kit on kickstarter called Kinetic Creatures. These flat packed models are made from cardboard and can be assembled without tools. Their mechanical legs are operated either by a simple cam that you turn by hand or by a motorized attachment. I love the basic idea here. This is the kind of thing that my 6 year old would really enjoy doing that also serves to get him into making things (he’d probably insist on motorizing it with scraps, he collects dc motors and has quite a collection).
I did notice that they mentioned using it as a robotic platform, adding custom electronics to the empty space allowed in the body of the animal. This initially got me quite excited, thinking that I could, for $30 have a 1 foot tall quadruped platform that looked awesome, then I realized it can’t turn. I guess I’ll have to hack it a little bit to put separate drives in for each side. That would be a cool upgrade they could offer.
Have any of you tried to do turning with a set of only 4 [jansen] legs before?
Talk about reducing the costs of a build, this tricopter uses cardboard as a frame and has one less motor than its quadcopter relatives. There are almost no details other than those shared in the video after the break so we’re just going to guess based on what we see (feel free to share your own insight in the comments).
The smooth curves of this integrated landing pad makes us thing the frame was cut either with a CNC device or a utility-knife wielding ninja. Two of the three motor supports look just like what is shown above, but the third has a hinged mounting bracket attached to a servo motor. This way the propeller can be tilted around an axis running parallel to the support arm. We’d bet this feature is mainly for adjusting the yaw of the aircraft.
The video comments mention that this can hover when the throttle is at 45%, showing that there’s a lot lift available when needed. That is until you really weigh it down by adding plastic cages around the propellers. It’s kind of neat to see the thing ‘sticking’ to the ceiling at the end of that clip by driving the throttle wide open and using the cages as top-sided landing gear.
Continue reading “Cardboard framed tricopter”
Racer is a racing video game with a very real element. The player sits in an arcade-style console; wheel, pedals, shifter, and television display. But in what must be an homage to Tron the game taking place is very real. You can see the track above, designed in CAD and cut from cardboard, which is navigated by that little vehicle the gentleman holds in his hand. It’s wireless and broadcasts video back to the control console. What we have here is a homemade drone but for now it’s confined to the gaming grid. Don’t miss the demos after the break. Continue reading “Racing game uses a physical race track and vehicle”