Xbee controlled, granite-wrapped clock travels into future

From the looks of it this clock is a couple of months ahead of its time. [Oscar] built the clock (translated) taking time to add a lot of goodies into the mix. First up, the parts you see include six large 7-segment displays for hours, minutes, and seconds as well as an LED marquee which can scroll messages. Inside there’s a temperature and humidity sensor for environmental feedback, and an Xbee module which allows for wireless computer control. Time is kept by a DS1307 real-time clock, which is read by an Arduino Uno, then pushed to the display by the pair of I2C addressable SAA1064 drivers. The whole thing was enclosed in four sheets of granite for the box, and a pane of glass for the front. We sure hope it’s well anchored to that wall. You can see it ticking away after the break.

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Embedding an accelerometer and XBee in a guitar

[JP Carrascal] hacked his guitar by adding motion control while removing the need for wires. He’s using a dual-Arduino system with an Mini Pro inside the guitar and a Duemilanova for the receiver connected to a computer. Wireless is provided by the XBee module seen above and a gutted Wii remote accelerometer is in there for motion sensing. Check out the artfully blurry demonstration of the motion effects after the break.

While he added some potentiometer-based controls there is also an automatic power-down feature. [JP] replaced the mono pickup with a stereo one and used the extra conductor as a switch to activate the additional electronics. We wonder if he also winds his own pickups or builds his own effects pedals.

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Wearable XBee Morse code keyer


NYC Resistor hosted a wearable wireless workshop today. It was taught by [Rob Faludi] and [Kate Hartman]. They brought along their recently released LilyPad XBee breakout boards. The goal of the class was to use the digital radios to build wireless communication gloves. Above, you can see the conductive thread sewn into the fingertips to key the device. The signal is transmitted to the other glove, which flashes an indicator LED so you can communicate using Morse code.

Hacklet 71 – Waterborne projects

Water: Life on earth wouldn’t exist without it. 71 percent of the Earth is covered by water. That only leaves 29 percent for us humans to live – and not all of that land is inhabitable. Water is so important that most human settlements start near water of some sort. Water to drink, or water to move goods. With all this water in oceans, lakes, and rivers, it is no surprise that hackers, makers, and engineers alike build some incredible projects that work on and under the water.

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All the Unofficial Electronic Badges of DEF CON

2015 was the year of the unofficial hardware badge at DEF CON 23. There were a ton of different hardware badges designed for the love of custom electronics and I tried to catch up with the designer of each different badge. Here is the collection of images, video demos, and build details for each one I saw this weekend.

Whiskey Pirates

[TrueControl] did a great job with his badge design this year for the Whiskey Pirate Crew. This is a great update from the badge he designed last year, keeping the skull and bones outline. It uses a PSOC4 chip to control a ton of LEDs. The eyes are RGB pixels which are each on their own PCB that is soldered onto the back of the badge, with openings for the LED to show through. Two AA batteries power the board which has a surface-mount LED matrix. The user controls are all capacitive touch. There is a spinner around one eye, and pads for select and back. The NRF24L01 radio operates at 2.4GHz. This badge is slave to commands from last year’s badge. When the two are in the same area the 2015 badges will scroll the nickname of the 2014 badge it “sees”. The piezo element also chirps many different sounds based on the interactions with different badges.

[True] makes design an art form. The matte black solder mask looks fantastic, and he took great care in use of font, size, alignment, and things like letting copper show through for a really stunning piece of hardware art.

Keep reading for ten more great badges seen over the weekend.

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Dropping by the MIT Electronics Research Society

We’re in Boston this week and my first stop was at MITERS last night. This is the MIT Electronics Research Society, which started as a way to provide free access to computers for all students. Since those humble beginnings the organization has grown to include a slew of fabrication and test hardware, as well as a vibrant community that makes the group a great place to hang out.

Walking into the building you’re greeted with double doors strewn with interesting electronics and many examples of fabrication in the form of the word MITERS. The group, which is pushing 60-years of existence, feels immediately like a hackerspace where creativity and anarchy duke it out in a wild dance of experimentation. On this particular Wednesday evening we encountered a room of about 10 people working feverishly to fabricate electric racers for the PRS racing circuit in Detroit this Saturday.

Like a hackerspace, MITERS is completely member (read: student) run. There is a board that helps keep things on the rails. There is no membership fee; funding for the organization is sourced from Swapfest, a weekly flea market during the summer.

There is a strong slant toward machine shop at this hackerspace. In addition to a respectable Bridgeport CNC Mill, the machine tools and hand tools provide for almost all your fabrication needs.

What can be built in this space? How about a unibalancer? This is a single-wheeled, human-ridable vehicle that has a 7-mile cruise radius between charges. For me the most interesting feature is the deadman’s switch. You know those black rubber strips on public buses that you press for the next stop? This unibalancer has one that you need to stand on to make it go.

The hackers at MITERS excel when it comes to electric vehicles and this time of year that means the Power (Wheels) Racing Series. There are restrictions on size, and power output so the teams squeeze every bit that they can. For me, the most interesting build is based off of a pair of Ryobi electric chainsaws. The 40V batteries for these are themselves quite formidable but not used at all in the build. The team has reverse-engineered the driver circuits and written their own firmware for the STM8 microcontrollers on the boards. The chainsaws use chains to drive the two rear wheels. The entire system is monitored with XBEE-based wireless data which is displayed on a tablet.

This isn’t the only PRS build. The MITERS plan to take three different vehicles with them this weekend. The one they can’t bring is the huge electric shopping cart (with mandatory wheelie bar) which hangs from the ceiling of the space.

In addition to the formidable fabrication projects, there are a multitude of electronic projects to be seen. There is a musical tesla coil which is the best I’ve ever heard. It could easily be mistaken as a proper speaker. If you need more bass there’s a massive ceiling-mounted sub-woofer for that. And if you want a more formidable tesla coil, the parts are there.

Look hard enough and you’ll even find battle robots. This one had diamond plate that spins with a variety of nasty accoutrements intended for maximum damage of its foe. On the underside you’ll see a brushless motor used the opposite of how you might think. The shaft is attached to the locomotion frame of the bot. The underside of the spinning diamond plate has a ring of antistatic mat against which this brushless motor body spins.

Thanks to the MITERS for welcoming us in. It was a blast seeing all of the projects they’re working on!

Meetup at Artisan’s Asylum Tonight

If you’re in the Boston area, head on over to Artisan’s Asylum tonight starting at 6. They were gracious enough to open their doors for a Hackaday Meetup. Bring some hardware to show off if you can, if you can’t that’s fine as well. We’ll have a few lightning talks, some social time, and maybe an afterbar!

To wrap things up, we have covered a few projects from MITERS already, like this Power Wheels Racing build, and an electric go kart done the right way. Now that we’ve met them in person we’ll be on the lookout for a lot more awesome hacks from them.

[Thanks John for suggesting we stop by!]