Question by Wafflicious 10 years ago | last reply 7 years ago
My 5yo daughter has figured out that her mad-Scientist daddy can make crazy things come true. For her birthday, she got a real unicorn and a princess crown (see picture attached). Now for Christmas, she has her heart set on a ROBOT unicorn, and I think I'm going to try to tackle this, but I need to keep the scope tight so that when Christmas arrives, I'll have a deliverable for her. (My instinct always leap to grandiose ideas like actual quadrupedalism that would balloon the time/effort/money inputs into the stratosphere. My biggest obstacle to make this work for Christmas is to stick with K.I.S.S. principles. I can do basic welding, woodworking, fabricating, stitching, etc. I'm reasonably good at electronics, and am a professional programmer with a degree in Aerospace Engineering.) Here is my rough build plan: (Completely open to improvement suggestions) 1) Build frame out of 1/2" square steel tubing and weld together. Leave large torso cavity for electronics and batteries. Feet will have wheels concealed by a hoof shroud. Feet will be upgradable (see tech features below) 2) Use blue foam to rough out body shape. 3) Cover with about 1/2" of soft foam covered with felt. Use yarn for mane and tail. Cover should be removable and washable. I'm trying to figure out tiers of work so that as long as I get the basic frame and covering down, I'll be able to increase/decrease the scope to ensure I'll have a deliverable for Christmas. Here are the tiered robotic features I am envisioning: Tier 1: Make the saddle bounce at about .5Hz with an amplitude of roughly 1/2". Possibly make head/neck bob up/down in sync. Tier 2: Add horse sound effects Tier 3: Build sensors for the reigns and stirrups. Monitor if stirrups get pushed inward in a basic kick the horse motion. Monitor if one reign or both are being pulled. Make sounds effects based on inputs. (E.G. Clop, clop of hooves begins when stirrups are pushed in, and stop when reigns are pulled.) NOTE: Since they have access to real horses, keeping the controls reasonably close to riding a real horse will make this double as a trainer/simulator for her and her friends. Tier 4: Upgrade wheels to powered. Move based on reign and stirrup inputs. Max speed will be very slow (40fps or so), so that it can be used inside safely. Movement is mostly just to augment her imagination, not to move like a real horse. Tier 5: (Not much chance I'll get this far prior to Christmas) Upgrade software, sound effects, etc. Current back of napkin ideas: Frame will probably have 3 pieces: legs/torso, neck/head, Saddle/back Saddle/back removable for electronics access. Neck/head will be joined to torso in 3 spots: the top point will be anchored with a chain link between two eye-bolts, the other two points would be on the sides of the bottom, with compression springs pushing the neck and torso away from each other, limited by a mechanical linkage. This should give reasonable motion ability, and allow the two base points to become the sensors for the reigns being pulled. I'm thinking a small 12V deep cycle battery, and 12v salvage DC motors powering the wheels. Depending on the motor torque, I'll either power the back two feet and keep the front feet as swivel casters, or power all four and turn tank-style. The budget needs to stay reasonable, say $100ish. This is a kids toy, and I've got lots of other mad-scientist projects to pump money towards. Outstanding questions: Motor selection, cheapest with high enough torque Good, cheap way to make seat and possibly head oscillate. Mechanism needs to not break even if a 200lbs rider sits on it. (Doesn't need to work when overloaded, just can't be permanently damaged when overloaded.) Locate inexpensive 12v charger that won't overcharge if left connected, but will charge a 3ah battery reasonably quickly. (Or schematics to build one) Essentially, looking for a best bang-for-buck charger. Least expensive way to play audio clips? I've got plenty of horse-sound clips located, but I need a way to play them economically. Not sure how much force will be needed for movement. I'm assuming a 70lbs rider/robot max and that it will primarily operate on flat surfaces, potentially on carpet. Can't burn out if overloaded. Suggestions on simplifying this? Suggestions on simple improvements? Ways to keep the costs down? Sources for economical parts?
Topic by SvdSinner 6 years ago | last reply 6 years ago
For Halloween, I'm going to be riding a unicorn, and the unicorn is basically two bikes but with leg-like poles instead of wheels. This is basically like a hexapod robot, but with four legs instead of six and pedals instead of motors. I already know where to get the parts and stuff, but need to figure out how to make a working leg mechanism. Anyone have any ideas on how to make it walk?
Question by ALogan97 8 years ago | last reply 8 years ago
I am looking for a very simple audio amplifier circuit that uses a PNP Darlington transistor. it only has to be a couple of watts. the only thing i could find online is a 1 watt amp using an NPN. i would prefer it runs on a 9v but 5v from an L7805 is good too. the least amount of components required the better.
Question by fossilshark 3 years ago | last reply 3 years ago
Hi all We discovered plenty of awesome projects at the local mini maker faire in UK last Saturday. Some really cool projects worth a look, including an voice-activated animatronic unicorn, wearable musical instrument, paint cannon... Here is the report which include links to tutorials: http://techmog.com/5686/hacked-unicorns-wearable-tiaras-and-unruly-robots-at-brighton-mini-maker-faire-2015/
Topic by londonarduino 3 years ago
Hey all, I've been lurking around here for the past few weeks and finally got a membership. Anyway, I had an idea I would like some help with: I'm looking to make a gag/stocking stuffer gift (relabeled product) for a friend. The idea is to take a can of spam and relabel it as unicorn meat (I saw this in a Think Geek catalogue). Dark, I know, but he would think it was really funny. The questions I have are: what kind of paper would work the best for this purpose? (photo paper is too thick to wrap around the can, generic printer paper is too thin and would fall apart, so what would be the "goldy-locks" paper?) Also, this part may be more complicated as I am a photoshop novice, but what would be the easiest way to design a Hormel Unicorn Meat label in Photoshop? Thanks!
Question by Prometheus Now 7 years ago | last reply 7 years ago
I am planning a costume build in which a public-address source needs to flash LED lights in the costume to the waveforms played through the public-address circuit. Additionally, since this is a costume project it needs to be portable and somewhat resilient to shock.
Question by Dain Unicorn 10 years ago | last reply 10 years ago
Everyone has their favorite Youtube people, and heres my top 5 favorites. 5: Nigahiga- their the #1 most subscribed people on youtube but their not exactly my favorite, but their still funny 4: Dominic Fear- The creatror of the famous Lazer Collection Series, which consists of 3 Lazer Collection Videos. Doctor Octogonapus is one animated character i will never forget 3: SecretAgentBob- the creator of many famous youtube videos like- Charlie the Unicorn, Charlie the Unicorn 2, Charlie the Unicorn 3, Lamas in Hats, Lamas in Hats 2, and Ferrets. No chance this guy wudnt be on the list 2: Richalvarez- The creators of 2 awesome youtube series', Stupid Mario Bros and Youtube News, but Stupid Mario Bros is what they got famous for. Its a series about Mario and Luigi, along with many other Nintendo characters like Wario,Waluigi, Yoshi, Solid Snake, Ash Ketchum, Brock, Link, Donkey Kong, Ness, Otacon, plus some characters they made up like Shadow Mario, Nox Decious, FedEx, UPS, and more. It has 3 seasons, and 2 movies and a new video is coming soon called SMB Operation: Blindstorm. They have actors from a youtube channel called Randumb Productions. I definatly love this series 1: Smosh- Originally the #1 most subscribed on youtube and now #4. But they are #1 in my book. They are HILARIOUS! Some of my favorite videos by them are- the Pokemon Music Video, Crybaby, Food Battles 2006/ 7/, 8/ and 9, If Movies were real, if Video games were real, the Ian is bored series, and many, many, many more. They are without a doubt my #1 favorite So whos your top 5?
Topic by FFVIIBOY 8 years ago | last reply 8 years ago
I recently made my first trial batch of Unicorn Poop, but I ran into a problem! I tried using the Wilton Sparkle Gel as suggested, and it *looks* fantastic... but it *tastes* bad. D: I wasn't sure if it was just me, so I tried it out on my beau, and then a couple of co-workers. The verdict: plain cookies tasted better than the Wilton-covered cookies. Oh no!! That means that my Unicorn Poops will look old and crusty, instead of wet and sparkly! (The horror, amirite?) I'd like to "glaze" them so that they can hold onto all the sparkles and decorations that make them so whimsical (as if rainbow colored poop cookies need the help!!) but I don't want to share cookies that taste sub-par because of the decorations. Does anyone have any suggestions? I'd like to make my own glaze, and ideally it would "harden", or at least dry "unsticky" (not a word) so that transporting them wouldn't be a hassle. Maybe glycerin? Light corn syrup? I'm open to suggestion!
Topic by Sandkitten 7 years ago | last reply 7 years ago
I just wanted to submit a link to this awesome guide I found for drawing anthro's. It's really great and it's also long and detailed (I printed it and it took 102 pages). In the process of teaching you how to draw anthro's it also has great drawing guides and tips for drawing anything - including humans and animals. So, for anyone interested - here's the link: http://hippie.nu/~unicorn/tut/xhtml/
Topic by LoneWolf 8 years ago | last reply 2 years ago
Hi guys im making an accurate redcoat officers uniform....any ideas how i do an engraved brass gorget. it has the lion and unicorn crest on.it...failing that id like to make the order of the and garter star medal.....any ideas?. there are several kinds of gorget..some engraved some with the design pressed from behind the two pics are of the star.( about the size of a spread hand. and the gorget is either brass or bronze)
Question by maninamousesuit 6 years ago | last reply 6 years ago
Hello , I'm not very smart (better then some people are tho) so I need some advice I'm building some headphones out of Lego , I have them all set up ( as in; Lego structure, speakers ready , head band , i have the wires) what can I use to insulate them to bloke out sound also what should I use to make the padding so they can go on my ears also to remove all outside sound , is there any good ways to increase bass or just anything to make them better.
Topic by fredd3rf 7 years ago | last reply 5 years ago
Welcome welcome CRASHers and other maker people to our hacker space group! This is the time to introduce yourself. Tell us a little about yourself and about what you like to make/hack/disassemble. I'll go first. My my name is Barb, and I'm your humble admin. I've been a member at Crashspace since early 2014, and am systematically conquering all tools the space has. At the time of writing, I'm very much into 3d printing on our Bukito and Bukobot. I also like woodworking, Arduino, electronics, paper, sewing, and plenty of other media. A recent project I'm proud of is my Hexachord, a giant 6-chambered, motorized, rotary string musical instrument. Also, meet the Crashspace mascot, Sparkles, a magical (and functional) soldering unicorn. Sparkles likes heating things up. ;)
Topic by BarbMakesThings 4 years ago | last reply 4 years ago
Green-thumbs unite! Instructables.com is happy to announce that we're hosting a Gardening Contest! We are looking forward to seeing a a cornucopia of seeding-skills, planters, gardens, ANYTHING that has to do with cultivating plants! Enter the Gardening Contest to show us what the plants in your garden are up to this year. Are they sprouting in fancy planters made from railroad ties and unicorn horns? Will they be cultivated via Twitter? Have you discovered a way to creatively display what you propagate? Make them yield more fruits or veggies? Or have you hit upon a way to keep them alive with minimal effort on your part? Show us what you’ve done with your garden to win an AeroGarden, watering cans, trowels and more!
Topic by jessyratfink 5 years ago
iPhone 4S popup too small to show close button and zoom deactivated, image upload broken on chrome, text editing broken on edge
Topic by LeoS31 3 years ago | last reply 3 years ago
[edit: this isn't real, but it would be awesome] In the interest of helping out our amazing community of authors, we’ve decided to make all of Instructables available for download in a single PDF document. That way when the EMPs hit or the grid goes down, you’ll have all the chicken rearing, solar paneling, rain barreling, wind turbining, and urban farming resources you’ll need. And because we’re including everything, you’ll also be able to stave off the post-apocalypse blues with bacon roses and unicorn poop. We’re putting all 127,000 Instructables projects into a single omnibus edition that will be sold at cost (TBD) to Instructables authors and for about $1000 for non-members. We’ll also make the PDF available to Pro members. If you’re so inclined, you can print and bind your own version. Get familiar with KaptinScarlet’s “How to Bind Your Own Hardcover Book” Instructable. We found a spectacular publisher who’s willing to bind the pages with paracord and baling wire. This edition should have just about 30 meters of paracord in the binding, along with just enough baling wire to keep the whole thing together if you choose to take out the paracord. The publisher also agreed to include a metal shank in the spine that can be fashioned into a makeshift knife, shovel, or bottle opener. The book is big enough to make a pretty nice counterweight for a small trebuchet, too. There were a few challenges for this publication. First of all, there’s an awful lot of content. To keep the print length down, we used small images wherever possible. We also cut the comment sections and individual project tables of contents. We did, however, keep the advertisements in the margins just in case AdSense will pay out during the End of Days. This publisher did balk at including packages of strike-anywhere matches in the book jacket. Sorry everybody. Matches were deemed “too unsafe” for their production and distribution teams. As though a conflagration of Amazon packages in the back of a UPS truck is less safe than losing a few digits to a frozen post-apocalyptic hellscape. The biggest challenge of all, though, was the sheer size of the book itself. The rough draft weighed in at about 500 kilograms. In a lucky break, using that ultra-thin biblical/lexicographer paper stock allowed us to cut the weight to just 220kg AND to make the pages double as bathroom tissue in a Charmin-less world. The tome will require a licensed forklift operator to receive it (or you can choose to pay the $150 white glove installation surcharge.) And, as usual, we cannot ship to a PO box.
Topic by wilgubeast 5 years ago | last reply 4 years ago
Http://www.amazon.com/AudioQuest-K2-terminated-speaker-cable/dp/B000J36XR2/ref=pd_sim_sbs_e_18 I was flipping around on Kotaku, and came across a page talking about the MASSIVE rip-offs involving HDMI cables. I read the article and found this link in the comments. This is a $9,000 audio cable from Amazon. I went down to the comments (mostly to see if some idiot bought this), and found some interesting comments. And by interesting, I mean I fell out of my chair laughing. -------------------------------------------------- Some comments: " We live underground. We speak with our hands. We wear the earplugs all our lives. PLEASE! You must listen! We cannot maintain the link for long... I will type as fast as I can. DO NOT USE THE CABLES! We were fools, fools to develop such a thing! Sound was never meant to be this clear, this pure, this... accurate. For a few short days, we marveled. Then the... whispers... began. Were they Aramaic? Hyperborean? Some even more ancient tongue, first spoken by elder races under the red light of dying suns far from here? We do not know, but somehow, slowly... we began to UNDERSTAND. No, no, please! I don't want to remember! YOU WILL NOT MAKE ME REMEMBER! I saw brave men claw their own eyes out... oh, god, the screaming... the mobs of feral children feasting on corpses, the shadows MOVING, the fires burning in the air! The CHANTING! WHY CAN'T I FORGET THE WORDS??? We live underground. We speak with our hands. We wear the earplugs all our lives. Do not use the cables!" - By Whisper ---------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------- "If there is one cable I would whole-heartedly trust to my Chimera-hunting needs, this would be the cable. No other cable has the tensile strength to properly and efficiently garrote a lycanthrope, asphyxiate an Esquilax or even gag a mermaid. Last week, using my trusty AudioQuest K2 (retrofitted with lead weights, bright orange latex paint and a generous coating of crushed glass stolen from the window of an abandoned church at midnight), I managed to snuff 3 golden unicorns in swift succession! Pros: Quickly tears through scales, fur, bone, and adamantium with ease Coils and uncoils from hip holster (optional) quickly and quietly For a product fabricated from 1,000 Onyx Dragon fetuses, the price is unbelievably reasonable! Cons: Shipping from the R'lyeh took far too long Doesn't come in 10' lengths (which would be perfect for hydra, cerberii and other multi-headed creatures) After every use, I can feel 6 ounces of my soul slipping from my core into the ether. But this may be due to the fact that I prefer to work without gloves. YMMV. Overall, I would recommend that any hunter buy one, nay, two, of these immediately, and experience the difference that upgrading to the K2 will make in your next quest!" - By Valannin "Pantheon Outcast"
Topic by ry25920 7 years ago | last reply 7 years ago