diy
gregladen | September 8, 2017Tenergy is a company that you know well even if you don't know them. They make a lot of the replacement batteries for everything, external power supplies, other electronic items. But recently they've added a few items to their line of products that reach out in an entirely different direction.
Tenergy Odev Tomo 2-in-1 Transformable DIY STEM Education Programmable Robot Kit is a robot kit that can be configured as a tricycle with two large wheels, or as a two-wheeled "bicycle" which operates like a Segway. Which is pretty amazing.
So far Tomo is my favorite out of the box Robot Build, and I…
gregladen | July 15, 2017First, a word about Arduino and why you should care. An Arduino is what is called a "prototyping micro-controller" aka "really fun electronic gizmo toy."
Micro-controllers are everywhere. When you "turn on" a machine in your house, chances are there was already a micro-controller sitting there, running on a minute bit of juice from a built in battery, waiting for you to push a button. Then, you turned a dial or selected an option on your dishwasher, or changed the setting on your thermostat, or picked some alternative mode on your coffee pot, or shifted into a different gear using a "gear…
gregladen | November 25, 2016The Unofficial LEGO Technic Builder's Guide by Pawet "Sariel" Kmiec (Second Edition) tells you how to build machines, models, robots, etc. that will work.
You need to construct these things in a way that ensures they won't easily fall apart, and that requires a certain amount of engineering. There are some fairly expensive and specialized Lego Technic pieces that you may not have on hand, and this book can help you emulate them. How do you matcha motor or servo to a specific task? You need to know some stuff to make that decision sensibly. How do you make a transmission? Or an…
gregladen | September 3, 2016The simplest project in the new book Electronics for Kids: Play with Simple Circuits and Experiment with Electricity! by Øyvind Nydal Dahl is the one where you lean a small light bulb against the two terminals of a nine volt battery in order to make the light bulb turn on.
The first several projects in the book involve making electricity, or using it to make light bulbs shine or to run an electromagnet.
The most complicated projects are the ones where you make interactive games using LED lights and buzzers.
Electronics for Kids: Play with Simple Circuits and Experiment with Electricity!…
carlyo | December 27, 2013Popular Science magazine -- one of the leading sources of news in technology, science, gadgets, space, green tech and more -- is returning as a key Media Partner with the Festival, bringing to the event not only a vast array of science media expertise, but also a special surprise: famed DIYer-at-large and zombie hunter, Chris Hackett, who is a contributing editor of Popular Science and who also hosted the Science Channel's avant garde DIY show, "Stuck With Hackett"!
Popular Science has been a major source of science and technology news since this award-winning publication was founded back in…
gregladen | November 17, 2012... the perfect gaming chair, converting a Roomba into a security robot, removing a stripped screw with a rubber band, making a radio out of spare parts from your junk drawer, building your own lie detector machine, making a Steampunk Laptop, using the back of your monitor as a desktop, tricking out your bike, and making a ping pong table that will allow only YOU to win to matter how good your opponent may be.
Obviously, I'm talking about The Big Book of Hacks: 264 Amazing DIY Tech Projects, which is just now available, just in time for Christmas.
Pro gift giving tip: Bundle this book with a…
esiegel | November 3, 2012"Only the knife knows what goes on in the heart of a pumpkin." -Simone Schwarz-Bart
With Halloween just behind us, the only things that pumpkins may mean to you now are pie, soups, or -- as John Prine would sing you -- a condescending term of affection, as in,
Daddy's Little Pumpkin.
But I recently came across the most amazing Jack-O-Lantern I've ever seen, where someone turned a pumpkin into a working, playable game of tetris!
Image credit: "Pumpktris" by Nathan at http://www.hahabird.com/.
This idea -- and the design -- is nothing short of brilliant. The pumpkin itself was an intricately…
esiegel | September 21, 2012"Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the Earth." -Ptolemy
As regular readers here will know, earlier this month I went to Glacier National Park, meeting up with an old friend of mine that I hadn't seen in a few years. What you may not have known is that Rich is not just into photography, but he's recently taken an interest in astrophotography, which I started noticing when he started sending me photos like this.
Image credit: Richard Helmich, from April of 2012…
carlyo | January 30, 2012
By Larry Bock
Founder and organizer, USA Science & Engineering Festival
Tinkering -- that hands-on, garage-based tradition which sparked inventions ranging from the airplane and electric light bulb to the Apple computer -- is making a comeback among average Americans, promising to change our lives for the better on several fronts.
Known by such monikers as DIY (Do It Yourself) and the Maker Movement, its resurrection, fueled by the current economic downturn and the falling cost of high-tech tools and materials, stands not only to boost innovation and change how science is taught in the…
rallain | September 2, 2010A while ago, we had a ton of lightning. As a bonus, it always happened in the middle of the night. I love sleeping where it sounds like I am on the front line in WWI - no, I don't. But, while lying awake waiting for the next BOOM I thought of something. Instead of just counting the time between flash and boom, maybe I could make a lightning detector.
For mere mortals, the first step might be to google "lightning detector". I don't want to do that. What fun would that be? I did look up something. The current in a typical lightning strike is on the order of 30,000 amps. How could I…
rallain | August 20, 2010I am not normally a book-review-kind-of-guy. However, in this post I will make an exception. My wife (who clearly knows me very well) bought me this book - Made by Hand: Searching for Meaning in a Throwaway World (amazon link)
The basic idea of the book is to look at how the author (Mark Frauenfelder) started doing more and more Do-it-yourself type stuff (DIY). He goes through his efforts to grow his own stuff, raise chickens, build guitars and stuff like that. Very enjoyable read. It wasn't so much about how to do stuff as much as it was about making stuff rather than buying stuff. (do…
rallain | June 30, 2010This is so awesome - an arduino controlled fan cart.
If you are not familiar with the arduino, basically it is just a very simple and cheap programmable chip. I have been meaning to play around with one of these, but really I am afraid. Afraid I will like it just a little too much.
In this fan cart (made by Eric Ayars - who was at NC State when I was there), the arduino tells the fan when to turn on and off by sensing magnets on the track. Who cares? I care. This allows you to do some cool demos and activities with non-constant forces.
Some other things I can think of:
You could make…
rallain | June 27, 2010Sometimes I get asked to do some demos for kids. I like this, it is fun. This week, I was asked to do just such a demo. Kind of as a historical record, I am going to document what I did.
The audience
It is always important to think about who you are talking to. Is this a group of high school physics students? High school teachers? Middle school teachers? Kids? It could be anything. In this case, I was meeting with a group of kids from ages 8 to 12 as part of a science camp.
The Objective
Is there a reason for the demo show? In this case, there was no stated objective. That means I can…
grrlscientist | May 27, 2010tags: Doctor Who Theme Song Accompanied by Tesla Coils, music video, DIY, Do-It-Yourself, science, physics, music, performing arts, weird, offbeat, Tesla Coils, ArcAttack, Maker Faire 2010, streaming video
The musical group, ArcAttack, constructed a set of Tesla Coils that they use to perform "an electrifying" live performance at Maker Faire 2010, held in San Mateo, California. Maker Faire is an event created by Make Magazine to "celebrate arts, crafts, engineering, science projects and the Do-It-Yourself (DIY) mindset."
According to the filmographer, the HVDJ pumps music through a PA system…
grrlscientist | April 4, 2010tags: Self Playing Harmonica, music, music video, DIY, computer printer, harmonica, vacuum cleaner, Instructibles, Stupid Inventions, streaming video
There are lots of different types of Self-Playing Instruments, but the folks at Stupid Inventions wanted to create something new so they decided to build the Self Playing Harmonica. Made from an old printer and a vacuum cleaner, the Self-Playing Harmonica will play different songs based on the image you print.
You can learn more about this and find step-by-step instructions for constructing your own self-playing harmonica at Instructibles.
rallain | March 26, 2010I am surprised at how many people (chemistry faculty included) have never seen this demo. (oh, technically it is called a cartesian diver demo) Basically, you put some floating object that has an air space in a closed bottle of water. When you squeeze it, the diver goes down.
For my setup, I used a glass eye-dropper. Put it in a cup to make sure it just barely floats and then put it in a completely full water bottle. If you don't have a eye-dropper, you can use anything that floats with an air space. I have done this with part of a straw before. Fold a small section of a straw in half…
grrlscientist | March 2, 2010tags: handheld thermal cycler, LavaAmp, PCR, Polymerase Chain Reaction, DNA, molecular biology, Unreasonable Insitute, DIY, technology, Guido Núñez-Mujica, streaming video
Millions of people in the Global South suffer from neglected diseases, many of which could be treated, even cured, if they were detected early enough. But reliable, low cost diagnosis hasn't been available, as drug companies have no incentive to invest in the diseases of the poor. New pandemics can go undetected until they have spread out of control, like HIV, and treatable ailments can cripple impoverished communities…
awild | February 21, 2010As winter doesn't have much insect activity, it's the season I use to work on my equipment. Yesterday I tried out a new arrangement to diffuse the heads on my mt-24ex twin flash when the heads are mounted on long, moveable arms. Here's a time-lapse video showing the construction, plus a short clip of the gear in use:
Note the effect of the diffusion:
A bare, undiffused flash produces harsh shadows and glare
A diffused flash provides softer, more even lighting
rallain | February 14, 2010I was thinking about some experiments that deal with friction and I wanted to show something with a force probe. The problem is that most people don't have one of these. So, I decided to try and make one out of simple things. In this case, I am using some straws, a rubber band and some paper clips. Let me draw a little sketch of how this thing works.
The basic idea is to use the rubber band to measure the force (by measuring the amount the rubber band stretches). The two paper clips do two things. First, it allows you to hook up the device to something (like hanging some Lego bricks on…
rallain | December 28, 2009What happens when your kids won't give you a turn on the Wii? Simple. You take their LEGO bricks and their slinky and do some physics. I will keep this simple. Basically, I created a slinky holder out of LEGO pieces and added LEGO bricks to the end to stretch it. Here is the video.
Lego + Slinky = Physics from Rhett Allain on Vimeo.
Maybe in an un-Dot Physics fashion, I am not going to analyze this data. I am not going to even describe the physics. Instead, I will leave this as a What Can You Do With This in the style of Dan Meyer.
I will give a couple of hints. First, I put this on…