[Stef Cohen] decided to combine three different artistic mediums for her latest project. Those are painting, electronics, and software. The end goal was to recreate the aurora borealis, also known as the northern lights, in a painting.
The first step was to make the painting. [Stef] began with a shadow box. A shadow box is sort of like a picture frame that is extra deep. A snowy scene was painted directly onto the front side of the glass plate of the shadow box using acrylic paint. [Stef] painted the white, snowy ground along with some pine trees. The sky was left unpainted, in order to allow light to shine through from inside of the shadow box. A sheet of vellum paper was fixed to the inside of the glass pane. This serves to diffuse the light from the LEDs that would eventually be placed inside the box.
Next it was time to install the electronics. [Stef] used an off-the-shelf RGB LED matrix from Adafruit. The matrix is configured with 16 rows of 32 LEDs each. This was controlled with an Arduino Uno. The LED matrix was mounted inside the shadow box, behind the vellum paper. The Arduino code was easily written using Adafruit’s RGB Matrix Panel library.
To get the aurora effect just right, [Stef] used a clever trick. She took real world photographs of the aurora and pixelated them using Photoshop. She could then sample the color of each pixel to ensure that each LED was the appropriate color. Various functions from the Adafruit library were used to digitally paint the aurora into the LED matrix. Some subtle animations were also included to give it an extra kick.
Unless you live way up in Canada, it’s not very likely that those gorgeous coronal mass ejections will collide with the atmosphere above your home. If they do, it’s a rare occurrence you wouldn’t want to miss. This is why [James] devised of a special alarm that would notify him when the Northern Lights may be visible in his neck of the woods. And what’s a better aurora alarm than a simulated aurora light show for your room?
[James] uses a Raspberry Pi to check data from Aurora Watch UK at Lancaster University for local activity. If the forecast reads that there may be some light above his home town in northern England, it triggers a NeoPixel LED strip to scroll through the color values of an actual aurora PNG image. This produces the same sporadic shifting of colors for a proximal ambient indoor lighting effect… though slightly less dramatic than the real thing. You can take a look at his Python script on github if you feel inspired.
Continue reading “LED Strip Notifies You Of The Light Show You’re Missing Outside”
In the hopes of getting a heads up on when the aurora borealis will be visible from his back yard, [Alex] built a magnetometer to measure disruptions in Earth’s magnetic field. The build is extremely simple, too. It’s amazing what you can build with a few components and a trip to the dollar store.
The design or [Alex]’s project is called a torsion magnetometers. In this setup, two mirrors are affixed to a permanent magnet connected to a string. A laser is shone onto the mirror and is reflected back to an array of sensors. In [Alex]’s case he used a simple laser pointer and a pair of photoresistors encased in a PVC tube.
[Alex] has been running his magnetometer in his back yard for over a month now and has the data to prove it. Luckily for [Alex], those graphs he has been generating may get a little more interesting. A coronal mass ejection is coming our way and is expected to hit today around 22:30 UTC. We’ll go outside to look for an aurora, but we’re sure [Alex] will be glued to his laptop tonight.
Check out the CGI visualization of [Alex]’s magnetometer after the break
Continue reading “PVC Magnetometer to measure magnetic storms”
Stanton has released a new controller peripheral for laptop DJ’s. DaScratch is a USB connected MIDI device designed to emulate record interactions. It features a large touch area where the user can make scratching, sliding, and button pressing motions. The compact device has presets for software like Traktor, Serato, and Ableton Live, but can work with anything that supports MIDI. Multiple units can be paired together using magnets.
As the video below shows, there are quite a few different interactions possible. We really want to see a teardown of this device though. We get the distinct feeling that it’s designed to look more impressive than the underlying hardware actually is. Continue reading “DaScratch multitouch DJ interface”
A few days ago we wrote about the aurora open source mixer being available and that orders for the DIY or completed kit needed to be in by September 1, 2008. Well that day has since past and if you were on the fence about it and didn’t get your order in don’t worry about it. Turns out no one will be getting a mixer.
Aurora informs us that they needed to secure a minimum of 50 orders to cover cost, but in reality they were only able to secure less than 20 orders. Because of this, they will not be able to meet the initial production numbers and have postponed the sale of the mixer indefinitely.
All is not lost as they will keep the site up, along with the instructions on how to build your own mixer from scratch.
It’s been a long time coming but that highly sought after open source mixer, the aurora224 is now available for purchase on the company’s website. The aurora mixer is a fully programmable USB mixer complete with 24 back lit knobs, 2 faders, and a single crossfader.
While the instructions on how to assemble your own mixer from scratch have been available for sometime now, many wanted a kit complete with everything needed to avoid having to source the parts themselves.
The aurora mixer is available in 2 versions, a fully assembled turn key deck and a DIY kit that requires the use of a soldering iron and the ability to follow directions.
So, if you’ve wanted to build your own aurora mixer but never knew where to start, this may be your lucky day. Don’t wait too long as you have until September 1st to get your order in.
We’ve seen some fairly impressive mixer projects this year, and the Aurora mixer is no exception. It is a dual channel USB-powered mixer with two linear faders, one crossfader, eight backlit buttons and 24 potentiometers, all built around a PIC 18LF4525 microcontroller. That’s all pretty typical for a mixer, but this one is very visually attractive, featuring a clean and stylish form factor and controllable lighting both under the board and in the LEDs backlighting the buttons and knobs.
Whether you want to buy one now or build one yourself, the Aurora team has made both possible. You can contact them for pricing if you are ready to buy. If you prefer to build, this is an open source project with full assembly instructions, schematics, drivers, patches and all other source code and information you should need available here. See more photos of the Aurora mixer here, or see it in action after the break.
Continue reading “Aurora open source hardware mixer”