Rope Braiding Machine Built Entirely From LEGO Technics

February 19, 2016 by Dan Maloney 15 Comments

If you’ve ever seen a rope-braiding machine in action, you know they’re amazing machines where bobbins of thread whirl and spin in a complex dance to weave the threads under and over each other. Building one of these machines must be incredibly difficult; building one out of LEGO Technics pieces is darn near insane.

[Nico71], as hardcore a Technics builder as they come, tackled this complex build and made it work. A large drum spins horizontally and carries three groups of three planetary-mounted thread bobbins. The entire drum spins in one direction while the bobbins and another die with three holes spin the other way. The resulting braids are then fed through another spinning die, and the resulting 9-strand rope is taken up by a winding drum. The drum has a self-reversing feeding mechanism to keep the finished spool neat and tidy. The most impressive thing about the build, though, is the fact that it’s all powered by a single motor, and that everything is synchronized via gears, shafts, sprockets, chains and clutches. It’s a Technics tour de force you can see in action after the break.

[Nico71]’s build are pretty amazing. Some are pure art, others are models of classic cars and motorcycles, but things like his loom and the calculator he’s working on now are remarkable. Of course if you need to see more of the mesmerizing ballet of rope-braiding machines, check out this 16-bobbin hand-cranked version.

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Variable Instruction Computing: What Is Old Is New Again

February 19, 2016 by Brian Benchoff 63 Comments

Every twenty to twenty-five years, trends and fads start reappearing. 2016 is shaping up to be a repeat of 1992; the X-files is back on the air, and a three-way presidential election is a possibility. Star Trek is coming back, again. Roll these observations back another twenty-five years, and you have The Outer Limits, Star Trek, and riots at the DNC convention in Chicago.

History repeating itself is not the exclusive domain of politics and popular culture. It happens with tech, too: the cloud is just an extension of thin clients which are an extension of time-sharing. Everything old is new again.

For the last few years, Soft Machines, a fabless semiconductor company running in stealth mode, released the first preview for an entirely new processor architecture. This new architecture, VISC, offers higher performance per Watt than anything available on the market. If you’ve been paying attention for the last decade or so, the future of computing isn’t 200-Watt space heaters that also double as powerful CPUs. The future is low power machines that are good enough to run Facebook or run some JavaScript. With servers, performance per Watt is possibly the most important metric. How will Soft Machines upend the semiconductor market with new processors and new architectures? If you know your history, it shouldn’t be a surprise.

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All This Bike Needs Is Some Snow!

February 17, 2016 by Jenny List 12 Comments

It’s safe to say that the southern UK is not known for its winter snowfall. If you have lived through a British February then the chances are you’ll know a lot about rain and grey skies.

Happily this hasn’t deterred [Stuart]. Ever the optimist, he’s turned a pile of scrap metal and an unloved mountain bike into a fully functional ski-bike, and he’s just ready to go should the jet stream deliver a covering of the white stuff on the Thames Valley.

Using the facilities of rLab – Reading Makerspsce (he’s also a founder member of the up-and-coming Newbury and District Hackspace), [Stuart] didn’t just bodge together his “iCycle”. Instead he’s made it a really high quality build, with CNC’d aluminium fork stanchions to mount his skis, and foot pegs that are engineered not to let him down on the slopes. Best of all, the bike is nearly all made from scrap materials, only the bearings, axles and paint were brought in for the project.

Skiing hasn’t been featured very often in our coverage of the world of makers, however we have featured a skiing robot, back in 2009.

Eco Friendly Space-Fuel

February 14, 2016 by Gerrit Coetzee 64 Comments

If you’d like to risk blowing your fingers off for a good cause this week, look no further than [M. Bindhammer]’s search for an eco-friendly rocket fuel. [M. Bindhammer] predicts the increasing use of solid rocket boosters in the future. We’re into that. For now, rocket launches are so few and far between that the pollution doesn’t add up, but when we’re shipping consumer electronics to the moon and back twice a day, we might have a problem.

The most common solid rocket fuel emits chlorine gas into the atmosphere when burned. [Bindhammer] is exploring safe ways to manufacture a eutectically balanced and stabilized fuel compromised of sugar or sugar-alcohol, and potassium nitrate. If you watch home chemistry videos for fun on the weekend like us, [Bindhammer] goes through all his thinking, and even spells out the process for duplicating his fuel safely in a lab.

He’s done a lot of work. The resulting fuel is stable, can be liquid or solid. It has a high ignition temperature, but as you can see in the video after the break. Once ignited. It goes off like rocket fuel.

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Simple Headphone Bracket Shows Off Carbon Fiber Basics

February 12, 2016 by Dan Maloney 12 Comments

The carbon fiber look is a pretty hot design element for things these days. Even things that have no need for the strength and flexibility of carbon fiber, from phone cases to motorcycle fenders, are sporting that beautiful glossy black texture. Some of it only looks like the real stuff, though, so it’s refreshing to see actual carbon fiber used in a project, like this custom headphone rack.

True, this is one of those uses of carbon fiber that doesn’t really need it – it just looks cool. But more importantly, [quada03]’s build log takes us through the whole process, from design to mold construction to laying up the fiber mats and finishing, and shows us how specialized equipment is not needed to achieve a great result. A homemade CNC router carves the two-piece mold out of Styrofoam, which is then glued up and smoothed over with automotive body filler. The epoxy-soaked carbon fiber mats are layered into the mold with careful attention paid to the orientation of the fibers, and the mold goes into one of those clothes-packing vacuum bags for 24 hours of curing. A little trimming and sanding later and the finished bracket looks pretty snazzy.

We’ve discussed the basics of carbon fiber fabrication before, but what we like about [quada03]’s build is that it shows how approachable carbon fiber builds can be. Once you hone your skills, maybe you’ll be ready to tackle a carbon fiber violin.

[via r/DIY]

KiCad Traducido Al Español

February 11, 2016 by Brian Benchoff 67 Comments

KiCad ya es una gran herramienta para la captura esquemática y el diseño de PCB, pero el software sólo funciona si es posible utilizarlo. Para los mil millones de personas que no hablan inglés, esto significa que el idioma es la barrera más grande al momento de utilizar el mejor software para desarrollo de hardware. En los últimos meses, [ElektroQuark] ha estado liderando esfuerzos de localización al español de KiCad y estos se encuentran finalmente completados. También ha iniciado un foro de KiCad en idioma español para llevar el desarrollo de software hacia uno de los idiomas más hablado del planeta.

Mientras que ha habido otros intentos por localizar KiCad a otros idiomas, la mayoría de estos proyectos se encuentran incompletos. En una actualización de KiCad hace algunos meses, la localización al español ya contaba con algunas cadenas ya traducidas, pero no demasiadas. Los esfuerzos de [ElektroQuark] han acercado KiCad a millones de hablantes nativos de español, no solo algunos de sus menús.

El español es la segunda lengua más hablada del planeta, mientras que el inglés es la tercera. Teniendo en cuenta solamente este hecho, parece absurdo que casi todas las herramientas de software para capturas esquemáticas y diseño de PCB sean localizados sólo al chino o al inglés. Los esfuerzos de [ElektroQuark] por localizar KiCad al español son un gran avance para un ya impresionante software.

Dumping U8Plus Smartwatch ROM Via Vibration Motor

February 10, 2016 by Al Williams 24 Comments

[Lee] continues with his exploration of the U8Plus (a cheap smartwatch). He hasn’t got it all cracked, yet, but he did manage to get a dump of the device’s ROM using an unusual method. At first, [Lee] thought that the JTAG interface (or, at least, the pins presumed to be the JTAG interface) would be a good way to explore the device. However, none of the people experimenting with the device have managed to get it to work.

Instead, [Lee] went through the serial bootloader and dumped the flash memory. He found out, though, that the bootloader refused to read the ROM area. It would, however, load and run a program. Unfortunately, no one has found how to access the UART device directly, but they have found how to drive the vibration motor.

[Lee] took off the vibration motor and used it as an output port for a simple program to dump the ROM. An Arduino picked up the data at a low baud rate and produced an output file. This should allow more understanding of how to drive the watch hardware.

We covered the initial teardown of this watch earlier this year. Of course, if you don’t want to reverse engineer a smartwatch, you could always build your own.