Hacking Werkstatts And Other Workshops

November 13, 2014 by Brian Benchoff 3 Comments

We had a few very cool workshops at our party in Munich today, with Moog synths, robotic arms, Linksys routers splayed open on a table, and Club Mate flowing like water. We’re wrapping the workshops up right now and the kegs are being tapped. Before that, though, it might be a good idea to show off all the other Hackaday Prize projects that showed up today.

The M.A.R.S. Rover, a 3D-printed rocker-bogie robot showed up around noon. I didn’t see it driving around, but there will probably be video up later.

Also shown was the AutoCut robotic lawn mower. No blood was shed today.

[Mario] was cool enough to fly in and show off the OpenExposer, a laser resin printer that is heavily inspired by the RepRap project.

Pictures below.

Not-deadly lawnmower

MeArm

Moog hacking

If you’re wondering why we couldn’t get Internet at the workshops…

3D Scanner and OpenExposer

Solarbotics

M.A.R.S. Rover

OP-1 synth with a Moog

Starry Walkway In The Netherlands Lights Up The Night

November 13, 2014 by Sarah Petkus 22 Comments

When functional engineering blends itself with design and aesthetics, the things we encounter in daily life make the world a more exciting place to be. Artist, [Daan Roosegaarde’s] solar-powered walkway was unveiled last night in Nuenen, Netherlands, illuminating a kilometer long pathway with swirling light, transforming the space visually with functionality.

If the blue and green flowing spirals look familiar, that’s because they were inspired by the painting, Starry Night by Vincent Van Gogh, who was a resident of Nuenen for part of his life. The mosaic-like shapes arranged throughout the path are coated in a special paint containing a chemical that absorbs sun light in order to glow effectively for up to ten hours over night.

This project is the second installment of [Studio Roosegaarde’s] Smart Highways Research; the larger goal of which is to integrate new technology with roads in an artistically inspired approach to make commuting safer and more energy-efficient. In a few other similar incentives, [Roosegaarde] envisions using this same glowing paint for road markings as a means to help replace the need for street lights. The paint coating he proposes would also be temperature sensitive and capable of creating images to indicate to drivers when there may be ice present due to freezing. His ideas for upgraded roads include a priority lane that could recharge electric cars by means of induction coils built-in underneath them. Even cooler yet, [Roosegaarde] has also proposed the possibility of engineering trees to contain the bioluminescent qualities of some jellyfish and mushrooms so that they too can help replace costly artificial light outdoors. Since some of these technologies are set to be implemented in parts of the Netherlands in the coming years, the re-envisioned environmentally aware future could very well look like a fantasy scene from a painting.

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Extreme Repair Of A Burnt PCB

November 13, 2014 by Adam Fabio 45 Comments

[xsdb] had a real problem. His JBL L8400P 600 watt subwoofer went up in flames – literally. Four of the large capacitors on the board had bulged and leaked. The electrolyte then caused a short in the mains AC section of the board, resulting in a flare up. Thankfully the flames were contained to the amplifier board. [xsdb’s] house, possessions, and subwoofer enclosure were all safe. The amplifier board however, had seen better days. Most of us would have cut our losses and bought a new setup. Not [xsdb] he took on the most extreme PCB repair we’ve seen in a long time.

After removing the offending caps and a few other components, [xsdb] got a good look at the damage. the PCB was burned through. Charred PCB is conductive, so anything black had to be cut out. The result was a rather large hole in the middle of an otherwise serviceable board. [xsdb] had the service manual for the JBL sub. Amazingly, the manual included a board layout with traces. Some careful Photoshop work resulted in an image of the section of PCB to be repaired. [Xsdb] used this image to etch a small patch board.

The amplifier and patch were milled and sanded to match up nearly perfectly. Incredibly, all the traces aligned. [Xdsb] soldered the traces across the join with small sections of wire and solder wick. After soldering in some new high quality capacitors, the amplifier was back in action!

If you’re a big fan of burned PCB’s, check out Hackaday Prize Judge Dave Jones latest EEVblog video, where he works on a Ness home alarm panel with a similarly cooked section of FR4.

[Thanks for the link JohnS_AZ!]

T Minus Several Hours Until The Hackaday Prize

November 13, 2014 by Brian Benchoff 4 Comments

We’re only a few hours away until we announce the winner of The Hackaday Prize. Until then, we have a huge workshop and party to put together. It’s only noon here in Munich, and we’ve been up since the crack of dawn putting stuff together.

The doors open in a little bit, but so far we have people putting together the workshops. [Ben Gray] from Phenoptix is busy putting together a few MeArm robots for a workshop. They take one person 45 minutes to put together. There’s kinda something resembling an assembly line going on:

[Ben Gray] @phenoptix working on a MeArm

Hackaday Prize judge [Sprite_TM] made it out to the workshop/party. He’s working on soldering up some Teensy 3.1s for the Moog workshop. There are a ton of parts for this, everything from extremely expensive slide pots to opamps, audio caps, pressure and pulse sensors, and a vintage wah pedal that also has +5v CV expression output. Really cool.

Since we’re announcing the winner of The Hackaday Prize, there was the question of what the trophy should be. Trophies are not utilitarian in any way, so we thought we would put our own spin on this. It’s a PanaVise, emblazoned with a 3D printed plaque.

Doors open in a few minutes. More updates to follow

Surfing Around On A Self-Balancing Cloud

November 13, 2014 by Sarah Petkus 18 Comments

Throughout time it’s just been plain cool to genie around from point A to B on some form of personal portable hardware. Understandably so, it was the goal of [Dane Kouttron] to modify and improve the common standard in such a way that anyone could hop on his board and ride without a period of flailing to keep balance. In his Flying Nimbus project, the rider floats aloft a single power-driven wheel that will even do the balancing bit for you.

Inspired by some interesting aluminum scraps and an old 3 phase DC servo driver, [Dane] starting conjuring ideas of combining the two in order to produce his own self balancing form of transportation. A chunky reused tire from a local go-kart track turned out to serve as his wheel of choice which would mount between the feet of the rider. After ordering a 48v hub motor and waiting for it to make its way over from China, [Dane] took the time to model all of the individual parts, motor, and wheel in CAD to figure out the needed measurements for the custom pieces he’d later fabricate to fit around them. The aluminum frame that the rider stands upon not only houses and conceals the power cells and electronics running the central wheel, it also illuminates white light from the sides to stand out at night. Along the road of troubleshooting, [Dane] eventually scored a complementary top-notch servo drive from AMC, who ultimately wanted to see his project rolling as badly as he did. There is a load of detailed documentation on the layers of problem solving that went into the project on his blog, as well as more on the hardware used by [Dane] to get the board actively balancing. Seeing the final product should further enforce that there is no better way to get around then on the likes of something you made yourself:

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