Posted on May 8, 2012
A self-described electromechanical hobbyist and MIT student named Charles Guan is the mastermind behind the Chibikart, a motorized Mario Kart-like vehicle built from scratch.
On his blog, Charles states that Chibikart took him a total of three weeks to build, “from [announcement] to first ride test,” which seems like just absolutely no time at all.
I reached out to Charles via email, curious to find out how much a project like this would cost a person…
The battery pack was an exclusive that he was given at no cost, but it’s not on the market. “An equivalent lithium ion battery of that size is about $250 to $400 depending on quality/grade. ($250 for two model airplane batteries, and for a vehicle grade pack.)”
“The motors have about $250 of materials and machining time put into them,” —which, with a total of 4 motors, is another $1k of expenses— “but it’s not a cost I paid directly,”
Charles explains, “because I already had many of their parts.”
Factor in about $300 of “direct frame material and hardware costs” and a scratch estimate would put the cost to build the Chibikart at about $1300. (With the caveat that the battery cost isn’t really known.)
Building a Chibikart from scratch, if you don’t already have some of these parts, could set you back as much as $1750 (factoring in the higher-cost equivalent lithium ion battery).
He documents the whole assembly, tweaks and setbacks and all.
So I fully expect a fleet of copycat Chibikarts to appear in the coming months. Which would be great. Especially if someone built one for me.
• Frame size: 34″ by 18″
• Motors: Custom-wound and packaged direct drive hub motor, 300W peak each*
• Wheels: 100mm 87A skate wheels
• Battery: 32v 9Ah lithium iron phosphate pack
• Controllers: 350w-class Mysterious Chinese Sensorless e-Bike Controllers (“Jasontroller”)
• Top speed, theoretical: 26mph (voltage & motor RPM/V & wheel diameter)
• Top speed, realistic: 21mph**
• Actual top speed: To be determined.
*30 second “peak” rating at 20 amperes
**Factoring in conservative estimates for air drag, and motor resistive losses at-speed, smooth and level ground assumed.
Posted on May 6, 2012
Oh fuck! The sound heard across campus when some innocent (most likely drunk) soul drops their iPhone. Did you get the insurance bro? NOPE. Because obviously you’re a genius! Hell you’re in college right!?
There there fella, I gotya. Don’t you worry. I mean sure you’re a broke student and you essentially just destroyed a $600 piece of equipment that you rely on for nearly every aspect of your life. And sure this all happened because you were trying to do a keg stand to impress that sorority girl, who end up hooking up with your roommate anyway. But there is still hope. Look on the bright side, while you probably wont get your full money back, you might be able to salvage enough money to buy yourself something nice.
There happen to be a couple sites that would love to buy your broken crap.
Find other places to sell broken smart phones and electronics here
Maximillian Garland: Bright Futura
Posted on January 30, 2012
Let’s face it, some people are idiots, and this isn’t a uniquely phenomenon reserved for the elderly or teenagers. You yourself can be pretty dumb as well. What? You don’t think so? Well then why is it that you knowingly destroy one of the most expensive pieces of property you have.
Maybe you are aware and just don’t care. Perhaps you aren’t and you blame ignorance. What ever your reason I have the solution. I have complied a list of 7 dumb mistakes you probably do to kill your cars life span. Please note
Oh, so you are going to blame it on ignorance. Well after reading this post you wont have any excuse.
Below Is A Listed Of The Top 7 Dumb Mistakes That Kill Your Car
1. Not Using The Parking Brake
You’ll add years of life to your car.
Yes, that mysterious device that you’ve never used is actually valuable. Who Knew? When you park on an incline, or even on fairly steady ground, without using the parking brake, you’re putting all of the stress of the car on your transmission.
By using the parking brake, you’ll add years of life to your cars transmission. Just remember to disengage it before you start driving again.
Posted on January 23, 2012
When sitting down for a interview at a top U.S. company, you’d typically expect the interviewer to slam you with questions about your past history, testing your abilities, and knowledge of the company.
You wouldn’t think it was the time or the place to start asking about your opinion on garden gnomes or to explore solutions to world hunger, but that’s exactly what happens to some candidates looking to join up with some of America’s Top Companies.
25 Oddest Job Interview Questions: According To The Glass Door
1. “How many people are using Facebook in San Francisco at 2:30pm on a Friday?” – Asked at Google.
2. “Just entertain me for five minutes, I’m not going to talk.” – Asked at Acosta.
3. “If Germans were the tallest people in the world, how would you prove it?” – Asked at Hewlett-Packard.
4. “What do you think of garden gnomes?” – Asked at Trader Joe’s.
5. “Is your college GPA reflective of your potential?” – Asked at the Advisory Board.
6. “Would Mahatma Gandhi have made a good software engineer?” –Asked at Deloitte.
7. “If you could be #1 employee but have all your coworkers dislike you or you could be #15 employee and have all your coworkers like you, which would you choose?” – Asked at ADP.
8. “How would you cure world hunger?” – Asked at Amazon.com.
9. “Room, desk and car – which do you clean first?” – Asked at Pinkberry.
10. “Does life fascinate you?” – Asked at Ernst & Young.
11. “Given 20 ‘destructible’ light bulbs (which breaks at certain height), and a building with 100 floors, how do you determine the height that the light bulb breaks?” – Asked at QUALCOMM.
12. “Please spell ‘diverticulitis’.” – Asked at EMSI Engineering.
13. “Name 5 uses of a stapler without staple pins.” – Asked at EvaluServe.
14. “How much money did residents of Dallas/Ft. Worth spend on gasoline in 2008?” – Asked at American Airlines.
15. “How would you get an elephant into a refrigerator?” – Asked at Horizon Group Properties.
16. “You have a bouquet of flowers. All but two are roses, all but two are daisies, and all but two are tulips. How many flowers do you have?” – Asked at Epic Systems.
17. “How many planes are currently flying over Kansas?” – Asked at Best Buy.
18. “How many different ways can you get water from a lake at the foot of a mountain, up to the top of the mountain?” – Asked at Disney Parks & Resorts.
19. “What is 37 times 37?” –Asked at Jane Street Capital.
20. “If you could be a superhero, what power would you possess?” – Asked at Rain and Hail Insurance.
21. “If you were a Microsoft Office program, which one would you be?” –Asked at Summit Racing Equipment.
22. “Pepsi or Coke?” – Asked at United Health Group.
23. “Are you exhaling warm air?” – Asked at Walker Marketing.
24. “You’re in a row boat, which is in a large tank filled with water. You have an anchor on board, which you throw overboard (the chain is long enough so the anchor rests completely on the bottom of the tank). Does the water level in the tank rise or fall?” – Asked at Tesla Motors.
25. “How do you feel about those jokers at Congress?” – Asked at Consolidated Electrical.
Questions via theglassdoor
Could you answer any of them? What’s the weirdest job interview question you’ve ever gotten? Let us know in the comments below!
Maximillian Garland | Bright Futura Columnist
Posted on January 13, 2012
UC Berkeley physicist, and longtime climate skeptic, Richard Muller has finally gone on the offensive, publicly admitting he was wrong to doubt global-warming data in a piece for The Wall Street Journal.
The outspoken professor, who gained notoriety in the climate-denial community for his rants against Al Gore and fueling the fire on Climategate, decided to take matters into his own hands earlier this year by creating an independent study to assess specific objections raised by climate skeptics.
Posted on December 26, 2011
Despite its modest name, GoodReader is a stunning execution of a simple idea — one program that can import and view any media in any format, from basic .txt files to entire books and even movies. But this robust and versatile app lets you do more than just read. GoodReader’s elegant file management system makes the iPhone/iPad nonsystem seem worse than ever.
Let’s say someone posts a huge report on Google Docs for you to review. Import it, then use GoodReader’s sterling annotation function to mark it up with all kinds of notes and comments.
When you’re done, save it, mark it as read, and send it right back to Google Docs, Dropbox, or an FTP server, or via pretty much any file-sharing method. An autosync function lets you standardize the document in both locations so no one gets confused about which version to use.
Full-screen viewing on the iPad means no more squinting or zooming, and even spread layouts are easily navigated with an intuitive horizontal swipe. (If you want to zoom, though, you certainly can.) A tabbed view, with functions on the right-hand side, provides about the simplest navigation we’ve seen.
GoodReader isn’t free, but its incredible compatibility and flexibility means it can replace many other apps in your toolkit. It’s quite simply one of the most useful services out there.
Posted on December 6, 2011
(ABC) A team of scientists at the University of California at Berkeley has found the two largest black holes known to exist. Each hole is 10 billion times more massive than our sun.
A team of eight led by Chung-Pei Ma, a professor of astronomy at Berkeley, discovered the holes in two of the largest galaxies, 300 million light-years away.
The findings were published in the journal Nature.
The previous black hole record-holder is 6 billion times the size of our sun. It was discovered 33 years ago by Wallace Sargent at the California Institute of Technology in galaxy M87.
Posted on December 1, 2011
Ever encounter a situation where you need to give someone your phone number in order to contact them, but never want to hear from them again after that meeting?
Let’s just go over a list of quick examples:
1) Meeting creepers on Craigslist
2) Guys hitting on you
3) That random embarrassing hookup, and so on…
Posted on November 28, 2011
Who says Social Media can’t help students get better grades in school? In fact, Master in Education posted an infographic showing that students who use social media acquire better grades in school. The reason? Because they tend to create study groups without the need of encouragement from their instructors. More over, students who use social media finds a way on how to discuss and relate to issues in and out of their schools.
To Learn More, See The Infographic Below. Continue Reading
Posted on November 7, 2011
If you’re looking to start a company as a college student, stop looking for that big idea. Look for a big problem, then solve it.
Here are the top 10 companies that were started by college students in the order of their Alexa rankings.
1. Google, Stanford Graduate Students
Larry Page and Sergey Brin in 1998 · Alexa 1
Maybe you have heard of Google. If you haven’t lets give you the history of the one of the worlds most well known brands. Larry and Sergey met at Stanford and started Google as a research project for their graduate studies. Named BackRub, its original purpose was to index the Stanford Digital Library. After three years it was interfering with their studies so they tried to sell it to Excite for $1 million. Excite rejected the offer and Google received $25 million in funding the next year. Bet Excite feels dumb right now.
Note: Not started as a business. Continue Reading