Homebrew Carputer

Avbrand's Carputer

Though not from scratch, [Avbrand] integrated a powerful set of tools into his Subaru station wagon. The system was compiled from off the shelf electronics, such as a Compaq notebook, 3G USB modem, touch screen, and an assortment of other peripherals. It is based around Windows XP, though most of the carputer-specific applications, such as backup camera integration, Google Maps – based car tracking, and automatic volume control had to be custom coded by [Avbrand] himself. Perhaps the single most impressive and useful feature of the system is synchronization with highway traffic cameras. The system streams video of segments of the highway before [Avbrand] gets to them, allowing him to make more informed navigational choices. He documents it pretty well on his website.

Zelo, The Improbable Wooden Trike

The earliest bicycles were made from wood. Nearly two centuries later, some garage tinkerers still turn to this most traditional of materials for their own creations, since welding one requires experience and tools beyond the reach of many. Resembling Gilligan’s Island props, the resulting bikes are both artistic and great fun, but not very practical for real use; often heavy, ill-fitting or lacking durability.

[Boris Beaulant’s] birch laminate Zelo, on the other hand, has cleaner lines than anything you’d see in an IKEA showroom. Not content with an ordinary two-wheeler, he’s tackled a three-wheeled recumbent trike, which requires even finer tolerances. Two months and over 1,300 miles later, the trike is still rolling strong through the French countryside, proving its mettle as legitimate transportation and not just a garage novelty. [Beaulant’s] build log (Google translation here) offers some insights into the development of this masterpiece, starting with prior woodworking projects (furniture, rolling toys and a children’s bike) and finding clever solutions to problems such as creating a mold of his own back for a custom-contoured seat.

Center Brake Light LED Retrofit

brake_light_retrofit

[Matt] wanted to increase the intensity of the center brake light on his car. The factory installed light uses a 20w incandescent bulb and although aftermarket LED replacements are available, he decided to take the retrofit on himself. Using the Fresnel lens from the light assembly as protoboard, he mounted a row of 10mm LEDs along with their current limiting resistors. He then broke the glass from the original bulb, removed the filament, and soldered directly to the two electrodes. This way the bulb socket can still be used to connect to the car’s electrical system.

Autogiro POV Nostalgia

blade_screen (Custom)

This bit of nostalgia really caught our attention. A german hacker or “inventor” as we were called back then, came up with this interesting concept. He would project an image on to the moving blades of an Autogiro, relying on the POV effect to make it appear complete. While this is not the same system of utilizing POV that we currently use, it relies on the same principles. It looks like he’s hanging the projector or “magic lantern” from below the Autogiro, using the length of the rope to hang it as a focusing system. Were this to have actually gone into production, it probably would have really freaked people out. If only he had had access to something along the lines of the ceiling fan POV system.

[thanks itay]

[update: Why didn’t we look around for this earlier. It was brought up in the comments, there is in fact a POV system for R/C helis. http://www.nightgraphix.de (translated)]

E-bike Across Canada For $10

Justin Lemire-Elmore E-bike

[Justin Lemire-Elmore] spent one month riding his electric bike across Canada last summer. He made the journey from Vancouver to Halifax in 30 days using a mere $10 worth of electricity to recharge his bike. He put together a rather bizarre looking semi-recumbent bicycle to hold all of his gear. The motor controller, charge controller, battery packs, and lighting system were all his own design. He has a captivating 2 hour presentation embedded below in which he describes all the problems he had with his equipment during the trip as well as all the great experiences the journey offered. Continue reading “E-bike Across Canada For $10”

OmniDirectional Research Platform

[youtube=http://www.youtube.com/watch?v=-bcoAqKhdL4]

[Shachar Geiger] sent in an interesting project that he worked on with [Tal Avivi] at the Bezalel academy in Jerusalem. They were given the task of designing a 1-person electrical urban vehicle. They took some cues from MIT’s Transology and designed the OmniDirectional Research Platform (ODRi). There’s a video of it embedded above. It can be driven using three different input styles: an accelerometer joystick, a traditional gamepad, or body mass shift. They started with an Arduino, but needed more I/O and had to switch to a Wiring board (this was before the Mega). The platform is built mostly from scrap. The accelerometers were placed in an old Microsoft Sidwinder. The standard joystick is from a Sega Mega Drive. The weight sensors are out of cheap home scales.

Black Hat 2009: Parking Meter Hacking

For day two of Black Hat, we sat in on on [Joe Grand], [Jacob Appelbaum], and [Chris Tarnovsky]’s study of the electronic parking meter industry. They decided to study parking meters because they are available everywhere, but rarely considered from a security perspective.

Continue reading “Black Hat 2009: Parking Meter Hacking”