[Harris] has an interesting answer to the inevitable question about what he did on his summer vacation: he built a pair of electric roller blades. [Harris] is an Electrical Engineering student at the University of Nottingham, and he completed the first version of what he calls Skelecs just before he went back to college. He has documented the process from the initial concept and building his own controller board, through his failures at correctly drilling the steel base, to his first drive down the road.
His build uses a pair of small 120W hub motors attached to a steel chassis, which is attached to a pair of cannibalized rollerblade boots.
It’s a bit of a Frankenstein build (he currently has the batteries and controller stuffed into a pants pocket, which isn’t really a practical long-term solution), but it works. A bit too well, in fact: [Harris] says that a combination of speed and a bumpy road detached one of the batteries and sent him flying. He’s not letting a minor injury and a bit of blood put him off, though: he’s already started work on version 2, which will use lighter aluminum construction and a pair of omniwheels for easier steering and more control. We’ll believe that claim when we see it.
Remember, powered skateboards are over — non hackers got their hands on them so they’re commonplace. Hipster hackers need to drop that build and start on your own pair of Skelecs.
Continue reading “Powered Skateboards are Passe; Skelecs the New Hotness”
[Anurag] is a computer engineering student with a knack for rollerblading. Rollerblades are not a transportation device that are often fitted with speedometers, so [Anurag] took that more as a challenge and designed this Arduino-powered computer to give him more information on his rollerblade rides.
The device uses an Arduino as the brain, and counts wheel revolutions (along with doing a little bit of math) in order to calculate the speed of the rider. The only problem with using this method is that the wheels aren’t on the ground at all times, and slow down slightly when the rider’s foot is off the ground. To make sure he gets accurate data, the Arduino uses an ultrasonic rangefinder to determine the distance to the ground and deduce when it should be taking speed measurements.
In addition to speed, the device can also calculate humidity and temperature, and could be configured to measure any number of things. It outputs its results to a small screen, but it could easily be upgraded with Bluetooth for easy data logging. If speed is truly your goal, you might want to have a look at these motorized rollerblades too.
Wireless controller, more powerful custom-made motors, stronger frame, and with a name like DeathBlades, we can’t think of a single reason why you would prefer heel treads, well everyone was young at one time.
[Charleg] has been testing out a slightly new frame, despite having only half the motors necessary, and is getting great results hitting around 23Wh/mi. If you’re looking to build your own, his blog has a post for nearly every aspect of the design.
[Thanks Jerome Demers]
Perhaps you’ve seen this image before: a young kid tooling around on a pair of inline skates, pushed forward by a weed whacker cycle. While the instructions for this device would seem fairly obvious (attach wheel to weed whacker) the writeup appears to be nonexistent. If you have any information, do let us know, but in the meantime, enjoy these other weed whacker powered projects.
Continue reading “Wheels and weed whackers”
[Max T] sent in this interesting robot design. I dig the combo motion design. The legs can walk, or the wheels flip out time machine style to roll the robot around. Rather than power the wheels, the legs are used to skate the robot around – like a human on skates.