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Wednesday, January 1st, 2014
| Time | Event |
| 12:00a | An Arduino With Better Speech Recognition Than Siri
The lowly Arduino, an 8-bit AVR microcontroller with a pitiful amount of RAM, terribly small Flash storage space, and effectively no peripherals to speak of, has better speech recognition capabilities than your Android or iDevice. Eighty percent accuracy, compared to Siri’s sixty.Here’s the video to prove it. This uSpeech library created by [Arjo Chakravarty] There is one caveat for the uSpeech library: it will only respond to predefined phrases and not normal speech. Still, that’s an extremely impressive accomplishment for a simple microcontroller. This isn’t the first time we’ve seen [Arjo]‘s uSpeech library, but it is the first time we’ve seen it in action. When this was posted months and months ago, [Arjo] was behind the Great Firewall of China and couldn’t post a proper demo. Since this the uSpeech library is a spectacular achievement we asked for a few videos showing off a few applications. No one made the effort, so [Arjo] decided to make use of his new VPN and show off his work to the world. Video below.
Filed under: Arduino Hacks, Software Development   |
| 3:01a | The Art of Box Making
[Darcy] has a bit of a love affair with cardboard. What started out as a simple way to mail things cheaper by making custom sized boxes has turned into the full-blown art of box making. He originally started by making the boxes by hand, but after he got suitably adept at it, he quickly refined his craft by adding in some technology. He now designs the boxes in SketchUp and then uses a home-made CNC router to cut and score the cardboard into even fancier styles. His blog has a whole slew of his cardboard box designs and it’s actually pretty cool to see what he’s come up with. He also has a bunch of tips for making your own, so if you’re one of those lucky hackers who can sell the things they make, it’s definitely worth a look! If you’re not selling anything perhaps a cardboard lamp shade is more for you? To see a video example of one of his CNC cut boxes, stick around after the break. Now all he needs to do is design an automatic box folding machine!
CAUTION: LOUD VIDEO Filed under: cnc hacks   |
| 12:01p | Wireless Power Transfer for Quadrotors
Quadrotors are great, but what kind of range can you get on them, really? What if you could charge them up just by flying over high voltage power lines, by or temporarily hovering by a charging station? That’s just what [Dr. Carrick Detweiler] wrote a paper about! (Caution: PDF) The paper discusses the method of wireless power transfer via magnetic resonance, which, depending on the scale, can transfer power at medium distances (~1 meter). This outperforms inductive coupling which requires a much closer proximity (~1-2 centimeters) for power to transfer. It does still require a certain amount of accuracy, but as we all know, quadrotors have no problem with even the most complex aerodynamic feats! There is an excellent demonstration video of a small scale wireless quadrotor prototype after the break.
Curious about wireless power transfer? We also covered a great article about the theory behind evanescent wave coupling a few years ago! [Via Hizook] Filed under: toy hacks   |
| 3:01p | USBPass – a Mooltipass-like Project
In our Developed on Hackaday series some readers may recall a sentence we wrote: “if one’s idea is not yet in the market, it’s either completely stupid or people are already working on it”. Well, [Josh] casually mentioned that he was also working on an offline password keeper after having recently subscribed to our google group. Similarly to the Hackaday-developed platform, the USBPass is connected to a computer via USB and is detected as an HID keyboard. As you can see in the picture shown above, it uses very few components: an ATMega32U2, a USB connector, three buttons and a few passives chips. A total of 20 passwords can be stored in the microcontroller’s memory, which can be ‘typed’ by the platform using the push buttons. The USBPass firmware is based around the LUFA USB stack, to which [Josh] added HID report functionality to allow data transfer from his desktop application. The latter uses the Linux/Windows/OS X HID API library so bringing his software to other operating systems can be done in no time. All the project resources can be found on GitHub, while [Josh] is currently working on a B revision which will include an OLED screen. Filed under: hardware, peripherals hacks   |
| 6:00p | Electronic Phenakistoscope!
Looking for a clever way to build a Phenakistoscope? Maybe you’re more familiar with its other names; Fantoscope, Phantasmascope, or perhaps its close cousin the Zoetrope? If you’re still scratching your head, that’s okay — they have really weird names. What we’re referring to here is a type of optical illusion that mimics movement by showing a series of still images at an offset interval — this can be achieved by looking through slots, strobing a light (like in this case) or even by the use of mirrors. This particular Phenakistoscope is a very simple but clever design that makes use of a recycled stepper motor from a printer, a CD as the animation disk, a strip of LED lighting, a few potentiometers and an Arduino to control the strobe. It works by synchronizing the strobe frequency with the motor rotation, resulting in the image in motion effect. Stick around after the break for a full gallery of the build and a demonstration video.
And of course, to see it in action: We also covered a great 3D printed Zoetrope a while ago that brought a bit of the third dimension into the animation! Filed under: led hacks   |
| 9:00p | Gotta Catch ‘Em All, With An Arduino
For every pokemon you encounter on your adventure to become the world’s greatest trainer, you have about a 1 in 8000 chance of that pokemon being ‘shiny’, or a different color than normal. Put an uncommon event in any video game, and of course a few people will take that feature to the limits of practicality: [dekuNukem] created the Poke-O-Matic, a microcontroller-powered device that breeds and captures shiny pokemon. We’ve seen [dekuNukem]‘s setup for automatically catching shiny pokemon before, but the previous version was extremely limited. It only worked with a fishing rod, so unless you want a ton of shiny Magikarp the earlier setup wasn’t extremely useful. This version uses two microcontrollers – an Arduino Micro and a Teensy 3.0 – to greatly expand upon the previous build. Now, instead of just fishing, [dekuNukem]‘s project can automatically hatch eggs, search patches of grass for shiny pokemon, and also automatically naming these new shiny pokemon and depositing them in the in-game pokemon storage system. The new and improved version works a lot like the older fishing-only automated pokemon finder; a few wires soldered on to the button contacts control the game. The Teensy 3.0 handles the data logging of all the captured pokemon with an SD card and RTC. What did [dekuNukem] end up with for all his effort? A lot of shiny pokemon. More than enough to build a great team made entirely out of shinies. Video below, with all the code available through a link in the description.
Filed under: Arduino Hacks, nintendo ds hacks   |
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