Pimoroni Wash Their Hands Of Arduino

Vydáno 11. 8. 2016

One of the big stories of last year was the fracture of the official Arduino supply into two competing organisations at daggers drawn, each headed by a different faction with its origins in the team that gave us the popular single board computers. Since then we’ve had Arduinos from Arduino LLC…... [Continue...]
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EMF Camp 2016, A Personal Review

Vydáno 11. 8. 2016

If I can offer one piece of advice to the Hackaday readership, it is this: Never, ever, be the sole member of your hackerspace’s board that owns a large station wagon, unless you relish the thought of packing an entire hacker camp village into your vehicle and transporting it halfway across…... [Continue...]
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Electroloom Throws In The Towel

Vydáno 11. 8. 2016

The once successful Kickstarter and National Science Foundation (NSF) research grant winner Electroloom is saying “Thanks and Farewell” to its backers, supporters, and sponsors. The startup ran out of funding while developing printer-like machine that uses electrospinning to automatedly produce ready-to-use garments. Electroloom has been an ambitious project to explore…... [Continue...]
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Tearing into Delta Sigma ADCs Part 2

Vydáno 11. 8. 2016

In part one, I compared the different Analog to Digital Converters (ADC) and the roles and properties of Delta Sigma ADC’s. I covered a lot of the theory behind these devices, so in this installment, I set out to find a design or two that would help me demonstrate the important…... [Continue...]
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EMF Fire Pong

Vydáno 11. 8. 2016

One of the installations that consistently drew a large crowd after dark at EMF Camp 2016 was a game. This wasn’t a conventional computer game though, instead it was a line of gas jets along which a pair of players had to bat a jet of flame between them at…... [Continue...]
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Hackaday Prize Entry: An Open Source Retina Scanner

Vydáno 11. 8. 2016

An ophthalmoscope is a device used to examine the back of the eye. This is useful for diagnosing everything from glaucoma, diabetic retinopathy, to detecting brain tumors. As you would expect from anything related to medicine, these devices cost a lot, making them inaccessible for most of the world’s population.…... [Continue...]
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Drone Doesn’t Know Much About Art, But Knows What It Likes

Vydáno 11. 8. 2016

There is an artistic technique known as stippling where an artist creates a picture using small dots of ink or paint. The result is almost like using a dot matrix printer at low resolution. [Paul Kry] at McGill University doesn’t directly teach art, but he did teach drones to produce…... [Continue...]
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A low-voltage disconnect for 12 volt lead acid and lithium batteries

Vydáno 11. 8. 2016

KA7OEI writes: The avoidance of overcharging is usually pretty easy to avoid: Just use the appropriate charging system – but overdischarge is a bit more difficult, particularly if the battery packs in question don’t have a “protection board” with them. Lead acid batteries (almost) never come with any sort of…... [Continue...]
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Fun Audio Waveform Generator Is More Than The Sum Of Its Parts

Vydáno 10. 8. 2016

[Joekutz] wanted to re-build an audio-rate function generator project that he found over on Instructables. By itself, the project is very simple: it’s an 8-bit resistor-ladder DAC, a nice enclosure, and the rest is firmware. [Joekutz] decided this wasn’t enough. He needed an LCD display, a speaker, and one-hertz precision.…... [Continue...]
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What We Learned from the 2016 Queercon Badge

Vydáno 10. 8. 2016

DEF CON has become known for the creative electronic badges, and now we get to see a variety of them dangling from lanyards every year. This year, the Queercon badge stood out as the one that got the most people asking “where did you get that?!” Once again, [Evan Mackay], [George Louthan],…... [Continue...]
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Open hardware DSP platform

Vydáno 10. 8. 2016

 Open source hardware digital signal processing platform from Paul Janicki: The open hardware DSP platform is a range of small boards that can be plugged together to give you a flexible platform for processing all sorts of audio signals. If you want a simple crossover, a custom USB soundcard and headphone…... [Continue...]
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Lessons in Small Scale Manufacturing From The Othermill Shop Floor

Vydáno 10. 8. 2016

Othermachine Co. is not a big company. Their flagship product, the Othermill, is made in small, careful batches. As we’ve seen with other small hardware companies, the manufacturing process can make or break the company. While we toured their factory in Berkeley California, a few interesting things stood out to us…... [Continue...]
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Bluetooth HID Gamepad And HC-05 Serial Hack

Vydáno 10. 8. 2016

“Which came first, the chicken or the egg?” Don’t bother us with stupid questions, they both co-evolved into the forms that we now serve up in tasty sandwiches or omelets, respectively. “Which came first, the HC-05 serial-flash-hack, or the wireless Bluetooth Gamepad?” Our guess is that [mitxela] wanted to play…... [Continue...]
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Star Track: A Lesson in Positional Astronomy With Lasers

Vydáno 10. 8. 2016

[gocivici] threatened us with a tutorial on positional astronomy when we started reading his tutorial on a Arduino Powered Star Pointer and he delivered. We’d pick him to help us take the One Ring to Mordor; we’d never get lost and his threat-delivery-rate makes him less likely to pull a Boromir. As we…... [Continue...]
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Hackaday Prize Entry: Non-Computational Fluid Dynamics

Vydáno 10. 8. 2016

Computational Fluid Dynamics, or CFD, and is applied to everything from aircraft design to how good of a wing a new skyscraper will be. Of course, the science of building airfoils is much older than CFD, leading to the question of how airfoil design was done before computers. The answer,…... [Continue...]
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Remote-Operated Gate On A Budget

Vydáno 10. 8. 2016

Sometimes, a simple fix is the best solution. Lacking extra funds for a proper remote-controlled gate-opener after the recent purchase of their farm, redditor [amaurer3210] built one as a birthday gift for his wife. Supported on pillow block housings, a 10″ wheel is connected to the motor by via a…... [Continue...]
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Unexpected Betrayal From Your Right Hand Mouse

Vydáno 9. 8. 2016

Some people really enjoy the kind of computer mouse that would not be entirely out of place in a F-16 cockpit. The kind of mouse that can launch a browser with the gentle shifting of one of its thirty-eight buttons ever so slightly to the left and open their garage door with…... [Continue...]
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The First Evil Maid-Proof Computer

Vydáno 9. 8. 2016

It doesn’t matter how many bits your password has, how proven your encryption is, or how many TrueCrypt volumes are on your computer. If someone wants data off your device, they can get it if they have physical access to your device. This is the ‘evil maid’ security scenario, named…... [Continue...]
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