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Now Let’s See The World’s Largest Arduino

Hackaday - 2 hours 53 minก่อน

A few days ago we saw what would have been a killer Kickstarter a few years ago. It was the smallest conceivable ATtiny85 microcontroller board, with resistors, diodes, a USB connector, and eight pins for plugging into a breadboard. It’s a shame this design wasn’t around for the great Arduino Minification of Kickstarter in late 2011; it would have easily netted a few hundred thousand dollars, a TED talk, and a TechCrunch biopic.

[AtomSoftTech] has thrown his gauntlet down and created an even smaller ‘tiny85 board. it measures 0.4in by 0.3in, including the passives, reset switch, and USB connector. To put that in perspective, the PDIP package of the ‘tiny85 measures 0.4 x 0.4. How is [Atom] getting away with this? Cheating, splitting the circuit onto two stacked boards, or knowing the right components, depending on how you look at it.

[Atom] is using a few interesting components in this build. The USB connector is a surface mount vertical part, making the USB cord stick out the top of this uC board. The reset button is extremely small as well, sticking out of the interior layer of the PCB sandwich.

[AtomSoft] has the project up on OSH Park ($1.55 for three. How cool is that?), and we assume he’ll be selling the official World’s Smallest Arduino-compatible board at Tindie in time.


Filed under: Arduino Hacks, ATtiny Hacks

How To Reverse Engineer, Featuring the Rigol DS1054Z

Hackaday - 5 hours 53 minก่อน

For a few years now, the Rigol DS1052E has been the unofficial My First Oscilloscope™. It’s cheap, it’s good enough for most projects, and there have been a number hacks and mods for this very popular scope to give it twice as much bandwidth and other interesting tools. The 1052E is a bit long in the tooth and Rigol has just released the long-awaited update, the DS1054Z. It’s a four-channel scope, has a bigger screen, more bells and whistles, and only costs $50 more than the six-year-old 1052E. Basically, if you’re in the market for a cheap, usable oscilloscope, scratch the ~52E off your list and replace it with the ~54Z.

With four channels of input, [Dave Jones] was wondering how the engineers at Rigol managed to stuff two additional front ends into the scope while still meeting the magic price point of $400. This means it’s time for [Dave] to reverse engineer the 1054Z, and give everyone on the Internet a glimpse at how a real engineer tears apart the worth of other engineers.

The first thing [Dave] does once the board is out of the enclosure is taking a nice, clear, and in-focus picture of both sides of the board. These pictures are edited, turned into a line drawing, and printed out on a transparency sheet. This way, both sides of the board can be viewed at once, allowing for a few dry erase marker to highlight the traces and signals.

Unless your voyage on the sea of reverse engineering takes you to the island of despair and desoldering individual components, you’ll be measuring the values of individual components in circuit. For this, you’ll want a low-voltage ohms function on your meter; if you’re putting too much voltage through a component, you’ll probably turn on some silicon in the circuit, and your measurements will be crap. Luckily, [Dave] shows a way to test if your meter will work for this kind of work; you’ll need another meter.

From there, it’s basically looking at datasheets and drawing a schematic of the circuit; inputs go at the left, outputs at the right, ground is at the bottom, and positive rails are at the top. It’s harder than it sounds – most of [Dave]‘s expertise in this area is just pattern recognition. It’s one thing to reverse engineer a circuit through brute force, but knowing the why and how of how the circuit works makes things much easier.


Filed under: how-to, tool hacks

What’s Next on the Raspberry Pi Front

Hackaday - 8 hours 54 minก่อน

Raspberry Pi founder [Eben Upton] recently sat in an uncomfortable chair in London to discuss all things Pi. Having sold about four million units over the last 2.5 years, he feels the future is bright for his original vision of inspiring and helping kids to learn programming.

[Eben] is quite pleased with the Pi-Top, a B+ based laptop kit that’s pulling in backers left and right while completely unaffiliated with the Pi foundation. The kit includes a 13.3″ HD LCD screen, keyboard, trackpad, and an injection molded case, though you can print your own with the included STL files. Kits start at $249 without a Pi and $285 with a B+ included. Robot and home automation HATs are also available separately or bundled with the Pi-Top kit.

The most exciting news is that the $600,000 spent on DSI connectors for those four million Raspis is about to pay off. [Eben] hopes that an official touchscreen will be available for purchase before the end of 2014 or in early 2015. He showed off a 7″ capacitive touch panel that will attach to a display board stacked on a Pi, effectively turning it into a tablet.

[Eben] said that they will not be making a Model C and instead are working on revision A+. He hopes to make an official announcement in the near future.

Finally, [Eben] discussed the importance of community, which played a large part in the birth and evolution of the Pi. He also spoke of Pi Academy, a sort of professional workshop for teachers in the UK who’ve recently been tasked with teaching computer science as demanded by changes in the mandatory UK school curriculum. He hopes that these 2-day seminars will help educators achieve the high expectations recently laid out for students to achieve by age ten.


Filed under: Raspberry Pi

Microsoft Surface Pro 2 is running out of stock… never to return

Liliputing - 11 hours 9 minก่อน

Microsoft launched the Surface Pro 3 tablet in May, just 9 months after introducing the Surface Pro 2. The new model has a higher resolution 12 inch with a 3:2 aspect ratio, a starting price of $799, an improved multi-angle kickstand, and other improvements that Microsoft says make the Surface Pro 3 a tablet that […]

Microsoft Surface Pro 2 is running out of stock… never to return is a post from: Liliputing

Giving Life to an Undead Baby Doll

Hackaday - 11 hours 54 minก่อน

If carving a pumpkin this month is too passé for you, take a shot at [Jason Suter's] instructable and build an animatronic legless zombie child that will surely creep out anyone who has a fear of dolls or other vacant-faced toy babies.

Beginning with a sacrificial doll, [Jason] dismembers all of the limbs and head from the torso in order to make room for the robotic upgrades. The servo motors which animate the new wooden dowel bones are mounted to a chassis cut with a CNC machine. [Jason’s] instructions include some nice diagrams demonstrating how the points of articulation at the shoulders and elbows work in conjunction to produce different flavors of crawling and dragging.

To top it off, the head is attached to its own mounting plate with tendons that rock back and forth in a miserable undead sort-of fashion. As an added nicety, he explains how to install a bluetooth module into the circuitry so he can tweak and upload his example code to the Arduino brain remotely without needing to get his hands near it. There is of course some additional melting, painting, and doll torture required to achieve that rough-up undead look… but that’s all just icing on top of a well executed piece of animatronics.

In his video [Jason] gives us an overview of his zombie’s build and also shows it in action:


Filed under: robots hacks, toy hacks

Dell is giving the Venue 11 Pro tablet an Intel Core M makeover

Liliputing - 12 hours 57 minก่อน

The Dell Venue 11 Pro line of tablets feature 10.8 inch full HD displays, Windows 8.1 software, and a choice of Intel Atom or Intel Core processors. I reviewed a model with an Intel Atom Bay Trail processor earlier this year and I was somewhat impressed… but found the $499 and higher price tags a little off-putting. […]

Dell is giving the Venue 11 Pro tablet an Intel Core M makeover is a post from: Liliputing

Google Inbox is a new (invite-only) tool for managing email

Liliputing - 14 hours 31 minก่อน

Google is launching a new email app called Inbox. But it’s not just a client that lets you read your Gmail messages. It’s designed to help you pick out the messages that matter most from a flood of email and do more with the data gleaned from those messages. Inbox groups messages into bundles, shows […]

Google Inbox is a new (invite-only) tool for managing email is a post from: Liliputing

Watch That Windows Update: FTDI Drivers Are Killing Fake Chips

Hackaday - 14 hours 53 minก่อน

The FTDI FT232 chip is found in thousands of electronic baubles, from Arduinos to test equipment, and more than a few bits of consumer electronics. It’s a simple chip, converting USB to a serial port, but very useful and probably one of the most cloned pieces of silicon on Earth. Thanks to a recent Windows update, all those fake FTDI chips are at risk of being bricked. This isn’t a case where fake FTDI chips won’t work if plugged into a machine running the newest FTDI driver; the latest driver bricks the fake chips, rendering them inoperable with any computer.

Reports of problems with FTDI chips surfaced early this month, with an explanation of the behavior showing up in an EEVblog forum thread. The new driver for these chips from FTDI, delivered through a recent Windows update, reprograms the USB PID to 0, something Windows, Linux, and OS X don’t like. This renders the chip inaccessible from any OS, effectively bricking any device that happens to have one of these fake FTDI serial chips.

Because the FTDI USB to UART chip is so incredibly common,  the market is flooded with clones and counterfeits. it’s very hard to tell the difference between the real and fake versions by looking at the package, but a look at the silicon reveals vast differences. The new driver for the FT232 exploits these differences, reprogramming it so it won’t work with existing drivers. It’s a bold strategy to cut down on silicon counterfeiters on the part of FTDI. A reasonable company would go after the manufacturers of fake chips, not the consumers who are most likely unaware they have a fake chip.

The workaround for this driver update is to download the FT232 config tool from the FTDI website on a WinXP or Linux box, change the PID of the fake chip, and never using the new driver on a modern Windows system. There will surely be an automated tool to fix these chips automatically, but until then, take a good look at what Windows Update is installing – it’s very hard to tell if your devices have a fake FTDI chip by just looking at them.


Filed under: hardware, news

Deals of the Day (10-22-2014)

Liliputing - 14 hours 53 minก่อน

The Lenovo IdeaCentre Q190 is a tiny desktop computer that looks a bit like a Nintendo Wii. But this little guy packs the heart of a full-fledged PC. Normally priced at $250 or higher, Lenovo is currently offering a model with Windows 8.1 64-bit software, a Celeron 1017U CPU, 4GB of RAM, and a 500GB hard drive […]

Deals of the Day (10-22-2014) is a post from: Liliputing

You can already jailbreak iOS 8.1

Liliputing - พุธ, 10/22/2014 - 22:28

Just days after Apple released iOS 8.1, the first tool for jailbreaking an iPhone or iPad running the device has been released. Team Pangu’s new jailbreak tool also supports devices running iOS 8.0. There’s not much the average user will actually be able to do with a jailbroken iOS 8 device at this point, but that […]

You can already jailbreak iOS 8.1 is a post from: Liliputing

Function Generator with Zero CPU Cycles

Hackaday - พุธ, 10/22/2014 - 22:00

No one is sitting around their workbench trying to come up with the next great oscilloscope or multimeter, but function generators still remain one of the pieces of test equipment anyone – even someone with an Arduino starter pack – can build at home. Most of these function generators aren’t very good; you’re lucky if you can get a sine wave above the audio spectrum. [Bruce Land] had the idea to play around with DMA channels on a PIC32 and ended up with a function generator that uses zero CPU cycles. It’s perfect for a homebrew function generator build, or even a very cool audio synthesizer.

The main obstacles to generating a good sine wave at high frequencies are a high sample rate and an accurate DAC. For homebrew function generators, it’s usually the sample rate that’s terrible; it’s hard pushing bits out a port that fast. By using the DMA channel on a PIC32, [Bruce] can shove arbitrary waveforms out of the chip without using any CPU cycles. By writing a sine wave, or any other wave for that matter, to memory, the PIC32 will just spit them out and leave the CPU to do more important work.

[Bruce] was able to generate a great-looking sine wave up to 200 kHz, and the highest amplitude of the harmonics was about 40db below the fundamental up to 100 kHz. That’s a spectacular sine wave, and the perfect basis for a DIY function generator build.


Filed under: Microcontrollers, software hacks, tool hacks

B&N launches Samsung Galaxy Tab 4 NOOK 10.1 for $300

Liliputing - พุธ, 10/22/2014 - 20:53

Barnes & Noble and Samsung are now selling their second co-branded tablet. The Samsung Galaxy Tab 4 NOOK 10.1 is now available for $300. That’s about the same price you’d pay for an ordinary 10 inch Galaxy Tab 4, but this model comes with the B&N NOOK app pre-loaded, plus $200 worth of free content […]

B&N launches Samsung Galaxy Tab 4 NOOK 10.1 for $300 is a post from: Liliputing

Microsoft launches Android apps including lock screen, OK Google replacements

Liliputing - พุธ, 10/22/2014 - 20:38

Microsoft’s bread and butter may be the Windows operating system. But the company has a long history of making software for other platforms such as Office for Mac and OneNote and Bing Search for Android. Now the company is launching 4 a series of new Android apps that come from the Microsoft Garage project. These […]

Microsoft launches Android apps including lock screen, OK Google replacements is a post from: Liliputing

Qualcomm working on TV dongle to stream 4K video from your phone

Liliputing - พุธ, 10/22/2014 - 18:30

There are a growing number of smartphones capable of shooting 4K ultra HD video. But there’s really not much reason to watch 4K video on a phone. You wouldn’t be able to see most of the detail on a pocket-sized screen. So chip maker Qualcomm is developing a device that could make it easy to […]

Qualcomm working on TV dongle to stream 4K video from your phone is a post from: Liliputing

Baby Quadruped Robot, Learning To Walk

Hackaday - พุธ, 10/22/2014 - 18:00

We’ve all seen videos of those crazy Boston Dynamics running quadruped robots that can reach up to 28 mph. Those things are amazing and it’s almost impossible to imagine how to even start building one. [Max] loves his robots and wanted to build a quadruped but, being a robot hobbyist, didn’t have the serious cash needed to make an extravagant robot like those of Boston Dynamics. Instead he started bridging the gap by designing a quadruped robot that is a little bit slower and tons cheaper.

[Max] designed all of the mechanical parts himself. After weighing the advantages and disadvantages of different materials, he decided that the frame would be made from 5mm acrylic sheet. The main body of the robot has acrylic ribs that are spaced apart by threaded rods. Twelve RC servos make up all of the joints, 3 in each leg. Notice in this photo how there is one servo that immediately rotates another servo. To support the other side of the rotating servo, [Max] epoxied on a T-nut, stuck in a short length of threaded rod which is then supported in the frame by a ball bearing. Simple and effective! The upper portions of the legs are also made from acrylic sheet and the lower legs are from a cheap camera tripod. Rubber feet ensure a slip resistant stance.

All of the servos are controlled by an Arduino Mega. [Max] is currently writing a sketch that will perform the complex math and determine coordinated servo motions for movements us humans take for granted, like ‘walk forward’. As you can see in the videos, [Max's] robot won’t be catching the Boston Dynamics’ Cheetah any time soon but he is off to a great start.

Future plans for this project include bluetooth control and integrating the ultrasonic sensor proactively installed in the ‘head’ of the robot. Check out the videos after the break. [Max] is looking for some feedback on his project. We here at HaD think this needs a great name. Let’s hear some suggestions in the comments…

 


Filed under: robots hacks

Cassette Tape Hack Turns Scratching into Sliding

Hackaday - พุธ, 10/22/2014 - 15:00

It’s common to see a DJ use a turntable as a musical instrument. Physically manipulating a record while its playing produces its own unique sound, but it takes some finesse and puts strain on the delicate workings of the player when you do it. With this in mind, [Jeremy Bell] has refreshed the notion of appropriating old technology to create new sound with his home-brewed scrubboard.

Making use of a cassette tape, [Jeremy] dissected samples from the reel and laid them out in horizontal strips over rails to hold their form. The pickup from the tape player has been hacked into a separate piece that glides smoothly over these rails, giving the user the ease of control. To produce the immediate cutting effect that is less easy to perform with his device than a record player, [Jeremy] created an on and off switch which is simply a close pin covered in foil that teeters over a metal contact (in this case a coin). The end product sounds exactly like scratching a record, but better because he’s doing it with hacker showmanship. One can only image the awesome potential for more elaborate setups having multiple tape samples and the like!

There are a few different videos of the scrubboard in use on [Jeremy’s] website. He is also running a Kickstarter right now in order to turn the project into a stand alone instrument with improved features.

Thanks Omar, for telling us about this cool re-envisionment!


Filed under: musical hacks

Ceci N’est Pas Une Clock

Hackaday - พุธ, 10/22/2014 - 12:00

[Justin] tipped us about his slick custom OBD-II gauge that could easily pass for an OEM module. He was able to use the clock area of his Subaru BRZ to display a bunch of information including the oil and coolant temperatures and the battery voltage.

The forum post linked above has a good FAQ-based explanation of what he did, but so many people have told him to shut up and take their money that he created an Instructable for it. Basically, he’s got a Sparkfun OBD-II UART board communicating with a pro Trinket. The display is an Adafruit OLED, which he found to be an ideal choice for all the various and sundry light conditions inside the average car.

[Justin] was able to reuse the (H)our and (M)inute buttons and reassigned them to (H)igh to show the peak reading and (M)ode to, well, switch between modes. The (:00) now resets the peak readings. He offers suggestions for acquiring the specific CAN codes for your car to make the data more meaningful. [Justin]‘s code is safe in the many tentacles of Octocat, and you can check out his demo video below.


Filed under: Android Hacks, car hacks

Digital Data from a Cheap Power Meter

Hackaday - พุธ, 10/22/2014 - 09:00

Power meters like the Kill-A-Watt are great for keeping track of energy usage, and are also very hackable. The Kill-a-Watt in particular puts out analog signals proportional to current and voltage, which makes it easy to interface with a microcontroller.

Although reading analog voltages is easy enough, [Kalle] found a cheap Chinese power meter that is even more hackable. These inexpensive power meters cost about the same as a first-generation Kill-a-Watt, but they directly stream out digital data. The power meter [Kalle] hacked has a non-US plug, but the meter is available from the usual suppliers (eBay, Aliexpress, etc) with a 3-prong US plug and 120v rating.

After breaking out a logic analyzer, [Kalle] discovered that the meter constantly streams voltage, current, and power data from the measurement board to the display board on a SPI-like bus. The ribbon cable inside the meter even has the clock and data bus lines clearly labelled. [Kalle] went on to reverse-engineer the protocol and write an Arduino sketch that parses the stream, making it even easier to integrate this meter into your next power monitoring project.


Filed under: home hacks

Take Your Samples for a Spin with the RWXBioFuge

Hackaday - พุธ, 10/22/2014 - 06:00

We have a confession to make: we love centrifuges. We’ve used all shapes and sizes, for spinning bags of whole blood into separate components to extracting DNA, and everything in between. Unfortunately, these lab staples are too expensive for many DIY-biologists unless they buy them used or build them themselves. [Pieter van Boheemen] was inspired by other DIY centrifuges and decided to make his own, which he named the RWXBioFuge.

[Pieter] designed the RWXBioFuge using Sketchup, OpenSCAD, and InkScape. It features a Thermaltake SMART M850W ATX power supply, an R/C helicopter Electronic Speed Controller (ESC), and brushless outrunner motor. For user output it utilizes a 16×2 LCD character display with an I2C interface.The frame is laser-cut from 3mm MDF while the 3D-printed PLA rotor was designed with OpenSCAD.

An Arduino handles the processing side of things. [Pieter] used an Arduino Ethernet – allowing a web interface to control the centrifuge’s settings and operation from a distance. We can see this being useful in testing out the centrifuge for any rotor/motor balance issues, especially since [Pieter] states that it can be configured to run >10,000 rpm. We wouldn’t want to be in the room if pieces start flying off any centrifuge at that speed!  However, we feel that when everything’s said and done, you should have a centrifuge you can trust by your side when you’re at your lab bench.

While there are similarities to the Openfuge, the larger RWXBioFuge has rotor capacities of eight to twenty 1.5-2.0ml microcentrifuge tubes. Due to the power supply, it is not portable and a bit more expensive, but not incredibly so. There are some small touches about this centrifuge that we really like. The open lid detector is always a welcome safety feature. The “Short” button is very handy for quick 5-10 second spins.

A current version of the RWXBioFuge is being used at the Waag Society’s Open Wetlab. [Pieter's] planned upgrades for the next version include a magnetic lid lock, different rotor sizes, an accelerometer to detect an improperly balanced rotor, and optimizing the power supply, ESC, and motor setup. You can never have enough centrifuges in a lab, and we are looking forward to seeing this project’s progress!

Check out a few more pictures of the RWXBioFuge after the break.


Filed under: chemistry hacks, tool hacks

Lilbits (10-21-2014): Next-gen DSL tech could bring new life to phone lines

Liliputing - พุธ, 10/22/2014 - 04:30

Back in the dark ages the only way for most people to access the internet was with a slow dialup connection (or by visiting a college or other institution that actually had a faster T1 line). Then along came DSL, one of the first technologies to offer broadband speeds. But in recent years cable, fiber […]

Lilbits (10-21-2014): Next-gen DSL tech could bring new life to phone lines is a post from: Liliputing

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