[Brad Graham] wrote in to let us know about his electric bike data dump over at atomiczombie.com, written just for us! Last we heard from [Brad] he was building some serious robots and freakishly tall tallbikes but since the weather has turned for the chilly its time to focus on indoor projects. Using a combination of robot parts, electrical conduit, and OEM bikes for the frames [Brad] takes us through several of his builds and all the various complications trying to drive the (often very powerful) electric motors. The builds range from scrapping motors and controllers to full blown drop in hub motor systems that can combine human and electric power. There is even an electric pusher cargo cart designed for a cooler, because beers are not going to haul themselves around.
Don’t forget to check out the AtomicZombie website for a ton of useful tips to chopping up bikes for your own mutant transpiration projects, we know we will. Thanks [Brad]!
Buildlounge and Full Spectrum Laser have decided to give away a laser cutter to whoever comes up with the best project involving light.
The contest is in part sponsored by adafruit industries. The focus of the contest is light – just design something around light, submit it, and you’re in the drawing for your own laser cutter. A solar oven, photophone, solar fiber-optic lighting and hacking apart an old overhead projector are suggested on the contest page, but the winning project will probably be much cooler.
Entries are due by January 1st. First prize is Full Spectrum Laser’s 40 Watt laser cutter, second is an awesome green laser pointer from Wicked Lasers, and third prize is an EL wire starter kit from Adafruit. Entries are due by January 1st, so we expect to see a lot of awesome submissions on the Hack A Day tip line between now and New Years.
New Project Hosting site
[Paul] wrote in to tell us about his brand new hack hosting service, HackHut. Based on WordPress with some modifications, it is definitely worth keeping an eye on as new features emerge.
Speaking of project hosting, Instructables are a common source of projects as well as complaints. Instructabliss by [Daid] is an often mentioned solution in our comments, and we thought we would bring it up so commenters don’t have to. We understand why it was made and think it was a clever hack, but we don’t officially endorse it. We survive on Ad revenue, if someone were doing this to us, it would hurt. We’re also not sure about the legalities of such a service, so keep us updated.
Grass Burning Robot
[Sebastian] brings us his grass burning, flame throwing robot. This robot takes in SVG files to create its burn path, and burns away. Not too many details, but be sure to check out the photos on his site.
[Stephen Eaton] created an enclosure and shared his process in a pair of blog post. We thought is was amusing that he remarks on how rarely his projects get the to point that you’d want to make an enclosure for them. We’ve certainly got a lot of bare-PCB creations lying around. But when it does come time, we think his fabrication method is a good way to go.
First of all, he didn’t start from scratch. He already had a SparkFun project case sitting around. The problem is figuring how to make it work for your situation. We’ve used a drill, a Dremel, and a file in the past and that yields passable results but nothing that would be mistaken for anything other than a carefully mangled project box. [Stephen] decided to mill the openings he needed from the box, which yielded professional looking results. He started by emailing SparkFun and asking if they could give him a 3D model of the project box and the obliged. He then modeled the LCD screen, LED light pipes, button, USB port, and SD socket. From there it was off to the mill with a custom jig and a few tricks we think you’ll appreciate. The end result is just another reason to build the CNC mill you’ve had on your mind for so long.
As far as pranks go, [Austin Shaf's] wireless hidden water gun is a real treat. The video above goes over a brief explanation and shows the setup in action. The prankster holds onto a wireless AVR remote, and when the unsuspecting victim walks by, he activates a second AVR controlling a pump; spraying water everywhere.
While most of us are out of school by now, the project would still be a fun office or perhaps street prank. If you’re one for registering, schematics and source code can be found at AVRFreaks. Alternatively, check after the jump for a copy of both.
Related: Office Pranks, and Water Guns.
Continue reading “Student Soaker, wireless water gun”
Looking for an interesting project to do using an Atmel Mega644? Students at Cornell University have got you covered. They were required to choose, design, and build a project using the microcontroller; and this year is quite promising with video object tracking, the always popular theremins, helicopters, Potentiostats, even Pavlovian conditioned mosquitoes, and more.
Of course all the previous years are included as well, making over 350 projects total.
[Thanks Bruce Land]
We’d like to spend some time talking about documenting your project and sharing it with the world. For many, the goal is to become an Internet sensation, hopefully for the right reasons. Taking a bit more time to make certain you do a great job of sharing your information will pay off. Here at hackaday.comwe focus on technological wonders but these guidelines should work well at improving the desirability of anything you might want to share on the interweb. Continue reading “How to make your project an Internet sensation”