More ESP32 Info Dribbles Out

December 8, 2015 by 29 Comments

In case you’ve been hiding under a virtual rock over the last two years, you might have missed it when Espressif turned the IoT game on its head by releasing a chip with WiFi and a decent embedded processor for under $1 in bulk, and costing not much more than that in a module.

They’re looking to repeat the success of the ESP8266 with the ESP32, that should be coming out any time now. As we get closer to the release date, details start to dribble out. [Alberto], who makes very nice-looking pinout diagrams for a number of our favorite chips and modules, has already made us an ESP32 module pinout diagram.

And [Rudi] has been digging up nearly every crumb of info on the ESP32 that’s publicly available. For instance, it was through his website that we learned that the new RTOS SDK source is already up on GitHub.

There’s also a source of official information in the ESP32 forum, but there’s not much news there just yet. We expect this to change as more beta units make it out into the wild.

We covered the announcement of the forthcoming ESP32 last month, and we have to say that we’re looking forward to getting a module or two in our hands. Twin cores, BTLE support, and better DMA are tops on our list of neat features.

Open Source… Windows?

December 8, 2015 by 80 Comments

There’s a lot to be said for open source software. The ability to change code to suit one’s needs, the fact that security vulnerabilities can be easier to find, and the overall transparency are just the tip of the iceberg when it comes to the strengths of using open source software. And, while Microsoft is no Apple when it comes to locking down their source code, their operating system is still, unfortunately, closed.

Don’t despair, though! There is a project out there that aims to change this. No, they’re not stealing anything or breaking into any computers to obtain Microsoft’s code. They’re writing their own version of Windows called ReactOS that aims to be binary-compatible with Windows. The software has been in development for over a decade, but they’re ready to release version 0.4 which will bring USB, sound, networking, wireless, SATA, and many more features to the operating system.

While ReactOS isn’t yet complete for everyday use, the developers have made great strides in understanding how Windows itself works. There is a lot of documentation coming from the project regarding many previously unknown or undocumented parts of Windows, and with more developers there could be a drop-in replacement for Windows within a few years. It’s definitely worth a shot if you fondly remember the frontier days of Linux where doing things like reading information on a CD required extensive experience using the terminal. If this is a little too much, though, there are other unique operating systems out there to investigate.

Thanks for the tip, [Matt]!

Creating Art In A Robot That Tastes With Its Feet

December 8, 2015 by 7 Comments

[Sarah Petkus] started off her career as a visual artist with traditional mediums. She has a webcomic called Gravity Road, but somewhere along the line she wanted her creations to come alive. These characters are robots – artistically designed robots – and turning this type of art into a real object isn’t something that happens very often.

Robots usually aren’t art. A Roomba is just a vacuum cleaner that’s meant to turn on a dime, thus the circular shape. The welding robots in a car factory aren’t art, they’re only tools to assemble cars. These are just devices built for a single purpose, and art is for any or every purpose. It’s not something you can really design, but you can engineer a few interesting solutions.

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Does The Internet Make You Stupid?

December 8, 2015 by 66 Comments

A recent post by [Christian Heilmann] is one of several I’ve read lately talking about how Web sites–Stack Overflow, in particular–are breeding a new kind of developer. The kind of developer that simply copies and pastes example code or schematics with no real understanding of what’s going on. His conclusion is that developers who don’t fully understand what they are doing will become disinterested and burn out. He’s talking about software developers, but I think you could extend the argument to developers of all kinds, including hardware hackers. He concluded that–at least while learning–you stick to the old ways of doing things.

I have trouble disagreeing with [Christian] on the details, but I do disagree with the conclusion. People have copied work from other sources for a very long time. We’ve all seen circuits that were clearly either torn from a datasheet or even glued together from multiple datasheet examples way before there was an Internet.

There’s two things that are slightly different today: First, everyone has easy access to lots of examples. You don’t have to go find a book (possibly at a library), search through it, and find one or two examples. A quick Google will find dozens or hundreds of examples.

The second thing that is different is that there are places exist like Stack Overflow where you don’t even have to go looking. You can simply ask, “How do I do X?” and you will get answers from someone. It might be wrong. You might not understand it. But you’ll probably get some kind of answer.

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Biometric Bracelet Electrifies You To Unlock Your Tablet

December 8, 2015 by 3 Comments

Researchers [Christian Holz] and [Marius Knaust] have come up with a cool new way to authenticate you to virtually any touchscreen device. This clever idea couples a biometric sensor and low-data-rate transmitter in a wearable wrist strap that talks to the touch screen by electrifying you.

Specifically the strap has electrodes that couple a 50V, 150kHz signal through your finger, to the touchscreen. The touchscreen picks up both your finger’s location through normal capacitive-sensing methods and the background signal that’s transmitted by the “watch”. This background signal is modulated on and off, transmitting your biometric data.

The biometric data itself is the impedance through your wrist from one electrode to another. With multiple electrodes encircling your wrist, they end up with something like a CAT scan of your wrist’s resistance. Apparently this is unique enough to be used as a biometric identifier. (We’re surprised.)

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Theremin’s Bug: How The Soviet Union Spied On The US Embassy For 7 Years

December 8, 2015 by 175 Comments

The man leaned over his creation, carefully assembling the tiny pieces. This was the hardest part, placing a thin silver plated diaphragm over the internal chamber. The diaphragm had to be strong enough to support itself, yet flexible enough to be affected by the slightest sound. One false move, and the device would be ruined. To fail meant a return to the road work detail, quite possibly a death sentence. Finally, the job was done. The man leaned back to admire his work.

The man in this semi-fictional vignette was Lev Sergeyevich Termen, better known in the western world as Léon Theremin. You know Theremin for the musical instrument which bears his name. In the spy business though, he is known as the creator of one of the most successful clandestine listening devices ever used against the American government.

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The Filmomat Home Film Processing System

December 8, 2015 by 31 Comments

The death of film has been widely reported, but technologies are only perfected after they’ve been made obsolete. It may not be instant photography, but there is at least one machine that will take 35mm film and 5×7″ prints and develop them automatically. It’s called the Filmomat, and while it won’t end up in the studios of many photographers, it is an incredible example of automation.

The Filmomat is an incredible confabulation of valves, tubes, and pumps that will automatically process any reasonably sized film, from 35mm to 5×7 color slides. The main body of the machine is an acrylic cube subdivided into different sections containing photo processing chemicals, rinse water, and baths. With a microcontroller, an OLED display, and a rotary encoder, different developing processes can be programmed in, the chemicals heated, developer agitated, and film processed. The Filomat is capable of storing fifty different processes that use three chemicals and a maximum of ten steps.

The video for this device is what sells it, although not quite yet; if enough people are interested, the Filmomat might be sold one day. This is likely the easiest film developing will ever get, but then again a technology is only perfected after it has been made obsolete.

Thanks [WhiteRaven] for sending this one in.

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