Laser Engraved Business Cards With LEDs

Plexiglass-LED-Lit-Business-Card-1

Regular paper business cards are boring. They are flimsy and easily forgettable for the most part, and when stacked together or thrown in a pile, it’s hard to locate a specific one; like trying to find a needle in a haystack. Plastic cards aren’t much better either because they still fall into that ‘who cares’ category. But plexiglas business cards with laser cut etchings beautifully lit up by an LED?! Yes please.

The design was developed by Romanian engraving company called Gravez Dotro who fixed the problem of simply glancing at a business card, putting it in a wallet, and causally forgetting about it later, never to contact the person that gave it out. If someone hands away one of these though, the receiver is definitely going to remember it. The solution isn’t that high-tech and just about anyone with access to a laser cutter can make their own. It will be interesting to see what people come up with. If you feel like creating one, be sure to send us pictures. We would love to see them. Video of the design comes up after the break.

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Prove Your Geek Cred With A Binary Watch

Binary Wrist Watch

After just one prototype, [Elia] has finished his super awesome Binary Wrist Watch.

He designed the PCB in KiCad, using a template for the PIC he found in a standard library — unfortunately it turns out the SSOP-20 PIC footprint in this library was actually a TSSOP-20. Confusingly enough, there was also a TSSOP-20 footprint in the library. Luckily it’s just a few millimeters off so [Elia] was able to just bend the pins in a bit before reflow soldering it in place.

The trickiest part of the project was actually making the wristband. He tried several different styles before settling on a paracord braid design he found on Instructables.

We especially like his quote at the end of the project:

Although not having worn the watch in the presence of normal humans, I can already guarantee that now everyone will be able to easily identify me as a nerd.

Acceptance is the first step in realizing you have an addiction, right?

[via Dangerous Prototypes]

PiAware, Automated Airliner Tracking On The Raspberry Pi

FlightAware

For the sufficiently geeky aviation nerd there’s FlightAware, a website that tracks just about every airliner and most private planes currently in flight. The folks at FlightAware compile all the information with the help of a few thousand volunteers around the world that have a bit of hardware to listen to ADS-B transmissions and relay them to the FlightAware servers. Now you can do this with a Raspberry Pi, and as a nice little bonus FlightAware is giving away free enterprise accounts to anyone who does.

Listening in on ADS-B transponders is something Raspberry Pis have been doing for a while, but doing anything useful with the altitude, speed, heading, and registry numbers of various planes flying overhead is pretty much FlightAware’s only reason for existing, and the reason they’ve developed an easy to use software package for the Pi.

Setting everything up requires getting dump1090 running on the Pi, the only hardware required being an RTL-SDR USB TV tuner, a GPS module, and an antenna for 1090 MHz. From there, just send all the data to FlightAware and you get a free enterprise account with them. Not a bad deal for the aviation nerds out there.

Home Made Segway Makes use of Balanduino

Impressive Homemade Segway Is The Real Deal

[Kristian] just put the finishing touches on his full size Segway built from scratch.

Back in 2012, he made a small balancing robot using a gyroscopic sensor and a PID controller — you can see the original post here. The cool thing is, he’s basically just scaled up his original project to create this full-size Segway!

It uses two 500W 24V DC motors (MY1929Z2) on an aluminum check plate frame, with the rest of the structure made from steel plumbing and fittings. What we really like is the steering linkage; similar to a real Segway, you pull the handle in the direction you want to turn. He’s accomplished this by putting another length of pipe parallel to the wheels which is connected by an elbow fitting to the handle bar. It’s supported by two pillow block bearings, and in the back is a fixed potentiometer — when you lean the handle bars one way, the pipe rotates, spinning the potentiometer. To make it return to neutral, he’s added springs on either side.

There’s an impressive build log to go along with it, and a great demonstration video after the break.

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50 Semifinalists Selected For Next Stage Of The Hackaday Prize

thp-semifinalists

Who cares about Open Design and building the next generation of Connected Devices? It turns out a lot of people do!

The Hackaday Prize put out the call for Open, Connected design ideas and around 800 projects were posted over the last few months to answer that call. The cutoff for documenting your concept and making entry to the contest was just before midnight last Wednesday. Since then our crew has been going through the entries to select 50 to move on as Semifinalists. Here’s who made the cut:

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Homemade Hot Water Shower Might Shock You

DIY Hot Water Shower

[Stephen] doesn’t have the luxury of readily available hot water in his apartment, and since he’s just renting he didn’t want to buy one of those instant powered units, so he decided to go ahead and build his own!

He’s using a submersible 1000W immersion heater in a 2.5 gallon water container which has been mounted high up in his bathroom to let gravity do the work for actual shower. It’s not quite an instant shower unit as the water needs to heat up like a kettle before being used — this takes about 4 minutes to hit the optimum temperature.

The current shower head installed drains the tank in about 2.5 minutes, which might not seem like much time for a shower, but let’s be honest — we could all probably cut back our shower time and save some water for the environment! Something one of our Hack a Day Prize entries is hoping to solve through music!

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