Maker Faire NC 2012: Electrical Vehicles

June 26, 2012 by Jeremy Cook 7 Comments

Although I had no idea what to expect at the NC Maker Faire, I was pleasantly surprised to see several well made electrical vehicles. One of note was [Lab306]‘s Fox body electric Mustang. Although it would have been impressive by itself, it was made by a high school class and has been featured in several publications. Be sure to check out their excellent website, or the short video of it after the break! Don’t you wish you went to that high school?

Also of note were a few really cool cars seen after the break, including one built from a kit by [Green Cycle Design Group]. The other two were extremely small by traditional car standards and featured very unique designs. Continue reading “Maker Faire NC 2012: Electrical Vehicles” →

Building A Bench Supply Without Altering The ATX Psu

June 26, 2012 by Mike Szczys 27 Comments

[FozzTexx] has been using a bench supply he made from an AT PSU for years. He put a lot of work into that one, removing unnecessary wires, mounting banana plug jacks on the metal case, and adding an on/off switch and labels. But if it ever dies on him it will be a major pain to do all that work again in order to replace it. When he set out to build another bench supply from an ATX PSU he decided to do so without altering the PSU. This way he can easily swap it out for a different one if he ever needs to.

The hardest part of the hack was sourcing connectors. But with the parts in hand he’s able to just plug the faceplate into the stock connector. This gives him access to all of the voltages, and provides an on/off switch and indicator light. He might also want to add the option of resetting the unit if the over-current protection kicks in.

Bike Cross Country In Your Basement With Google Streetview

June 26, 2012 by Brian Benchoff 11 Comments

Biking cross-country is a worthwhile pursuit, but then you’ll have to deal with terrible drivers, rain, bugs, and heat. [Jeff Adkins] over at lowendmac has a neat solution to exploring the country via bicycle without ever leaving the safety and air conditioning of your basement.

For his build, [Jeff] used a magnetic reed switch attached to the frame of his stationary bike and the pedal crank. Whenever the pedal crank is turned, a reed switch closes on every revolution. This reed switch is connected to a new Arduino Leonardo programmed to transmit keyboard presses to a computer for every five revolutions of the pedal. From there, it’s a simple matter of loading up Google Streetview on a laptop and letting the Arduino automatically advance through Streetview images while pedaling.

The next part of [Jeff]’s project will be adding left and right buttons to his stationary bike to navigate Google Streetview images without taking his hands off the handlebars. You can check out a demo of [Jeff] cruising around after the break.

via reddit

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MakerFaire K.C. Kansas City Hackerspace Delivers

June 26, 2012 by Caleb Kraft 4 Comments

The Kansas City Hammerspace crowd really brought an amazing amount of stuff this year. Some stuff you’ve already seen, some stuff that is totally new. I’ll be sharing details on some of them individually as they really deserve the attention. Their booth, or booths were huge, taking up roughly 1/3 of the main hall. It was packed with a plethora of individual projects that really were all over the place. There were enthusiastic people at every turn happy to show off what they had built.Their presence really boosted the awesome level of the MakerFaire through the stratosphere.

Not only did they bring tons of awesome to the MakerFaire, they were gracious enough to invite people back to the hackerspace after the show for an after party. They stuffed food in my entire family and made us feel at home. It was really cool seeing everyone gathered discussing various projects. The ArcAttack crew was even troubleshooting a small tesla coil cit that wasn’t working right.

Watch the Hackerspace tour and check out some pictures after the break. Posts highlighting some of the individual projects will be coming soon.

Continue reading “MakerFaire K.C. Kansas City Hackerspace Delivers” →

Building Better Cases With A Laser Cutter

June 26, 2012 by Brian Benchoff 16 Comments

[Ryan] just got his Raspberry Pi, and what better way to add a new toy to your workbench than by building a case for it? Using a laser cutter and 3D printer, [Ryan] managed to make a case that is sure to be the envy of all the other tinkerers at his hackerspace.

The build started off with a piece of dark red acrylic in a laser cutter. After cutting the Raspberry Pi logo out of this acrylic, [Ryan] cut the same logo – a little bit larger – out of plywood. Because he was very careful to measure the kerf (or the width of the laser beam/saw blade/what have you), the wooded version of the Raspi logo fit snugly inside the acrylic cut out.

The sides of the enclosure are a single piece of plywood with a kerf bend, making for a very attractive rounded case. Finally, the Raspberry Pi is mounted on a Pi plate printed on a Ultimaker.

For as many builds we see using a laser cutter here on Hackaday, there’s surprisingly little information on exploiting the true potential of these machines with marquetry, intarsia, or fretwork. Enclosures are always cool, so if you have a very elegant laser cut box, send it in and we’ll put it up.

HackaDay Is Entering In The Redbull Creation Contest

June 26, 2012 by Caleb Kraft 10 Comments

When I returned from MakerFaire Kansas City I was very pleased to find a Bullduino waiting on my doorstep! Hackaday has been accepted into the first round of the Redbull Creation Contest. I’m doing the physical building while the other writers are consulting for this round. I’m also pulling people from around me here at SquidFoo (my local hackerspace) that can help.

Today, I got lucky enough to run into [Tony Sherwood] from MakerBot. I told him my idea and he eagerly volunteered to lend his brains and his brawn… as well as his Makerbot Replicator. He’s been extremely helpful so far offering very good ideas on how we can get this thing operational as fast as possible.

I’m not going to share exactly what we’re building yet. I can tell you it will not be the most complex project, but it will be really fun, and most likely dangerous. We’re starting today, which means we have very little time to build. Lets hope we can make something interesting enough to go to round two!

Bicycle Quadcopter Flies For Dozens Of Seconds

June 26, 2012 by Mike Szczys 32 Comments

If you decide to fly into town on this bicycle-powered quadcopter your arms and legs really will be tired. That’s because this athlete had to give it his all to power the rotors through the foot pedals and the hand cranks. You can see just one of the rotors on the right side of the background. Yeah, this thing is big!

You’re looking at the Gamera II, a craft developed by students at the University of Maryland. About a year ago they were showing off the first version of the aircraft. With the passing of the year comes the breaking of world records as a different rider manages to keep it up for 50 seconds in the video after the break. Although the structure is huge (over 100 feet across) the building materials and techniques let it weigh in at only 71 pounds.

It still looks like way to much physical work for us. We’re sticking to the pedal-powered hydrofoil as our dream transport.

Continue reading “Bicycle Quadcopter Flies For Dozens Of Seconds” →