Got a 3D printer? Read the rest
Got a 3D printer? Read the rest
LEDs are diodes (that's what the D stands for) and diodes are sensitive to voltage drops: when you blow on an LED, you make it ever so slightly cooler, and that causes an infinitesimal, but detectable voltage drop. Read the rest
Raz85's Instructable for a Cardboard Spider Quadruped offers a nice demonstration of the surprisingly durable material properties of humble cardboard, replacing the more familiar milled metal or plastic limbs for a quadruped robot with scrap cardboard. Read the rest
If the novelty of holding an elaborate bearing (possibly connected to some motion-sensitive LEDs) is wearing thin, have no fear: with a 3D printer and a little ingenuity, you can make your own double-pendulum fidget spinner, a chaotic system that is intensely sensitive to initial conditions, such that it becomes very hard to predict the motion of the pendulum when you set it to swinging. Read the rest
Jonathan Odom -- aka Jon-a-Tron -- worked out that the fidget-spinner fad has created a world where we're all holding spinny things all the time, and that means we could all be holding amazing, awesome zoetropes! Read the rest
Becky Stern writes, "Send your valentine a note through the net! This DIY electronics project uses a small vibrating motor to gently wave a tissue paper heart and flash an LED when it receives instructions over the internet from another device. I built two versions of the ESP8266 wifi circuit, also equipped with two buttons for triggering the two commands. The devices talk over the Adafruit IO cloud data service to communicate with each other from anywhere with wifi, and I'll show you how to activate your valentine with the API gateway service IFTTT as well, in case you only want to build one valentine circuit." Read the rest
Mistablik is an American high-school student who put his mind to finding alternate uses for the lockers that lined his school's hallways -- lockers that sit empty as students switch over to electronic textbooks -- and decided to build a tiny, secure, Arduino-based vending machine that would sell soda to his fellow students. Read the rest
Tiffin pails are the ubiquitous, ingenious and practical lunchpails of Indian workers, delivered daily by an army of spectacularly well-coordinated "dabba wallahs." Read the rest
The severed, animated, flopping zombie appendage is a staple of horror films, and these zombie-mouth cupcakes look like someone has decorated an amuse-bouche with a bouche coupé. Read the rest
By photoshopping a pair of mirror-flipped profile-shots of your face onto either side of a full-on shot, you can make a gimmicked photo that, when curled and placed in a jar of water, creates a convincing illusion of your head in a jar. Mikeasaurus's Instructable has easy-to-follow instructions for making your own. Read the rest
While the process seems to be slightly more difficult that 'total noob' difficulty (also, with nixie tubes, hazardous voltages are involved, so be careful!), it looks like loads of fun, with an absolutely beautiful end product."
Bozardeux, a recent French graduate and Instructables user, has undertaken a project to make an open, 3D printed DSLR camera. All the parts and designs are licensed CC Attibution-ShareAlike.
The OpenReflex is an Open-Source analog camera with a mirror Viewfinder and an awesome finger activated mechanic shutter (running ~ 1/60°s). What's more, it's compatible with any photographic lens with custom mount ring.
All the pieces easily printable on any recent RepRap-like ABS 3D-printer without using support material ! Everything should print in less than 15h and anyone should be able to assemble it within 1h.
All parts are separate ( Film receiver, Shutter and Viewfinder ) to simplify builds and modifications. The source files are available under the CreativeCommon By-Sa license, fell free to modify them if you want a new feature, and don't forget to share your improvements on the web ;)
Here's a great Instructables for hiding a stash-box behind a wall of cut-away books. In some ways, it's a lot less fiddly than creating a single hollow book, though it does require you to use a scroll saw.
1. The height and depth of the books are the important dimensions of the book. The size of the cover is what limits storage space. Since you are using multiple books, the thickness of each one doesn't matter.
2. The books do not need to be the same size, but it is convenient if they are. Sets of reference books like encyclopedias work well because they are all the same and it is a reasonable excuse to have a bunch of large books all in one spot on the book shelf.
3. Hardback books hold their shape better than paperbacks do after being cut up.
4. The secret compartment only remains a secret as long as no one tries to read any of the books. So it helps if the book are relatively uninteresting while still looking like something that you would have on your shelf.