Antipasto Hardware Blog made this fun project for their fish tank! Full tutorial here.
This may or may not have implications for real-life shark tracking, but I’ll take an excuse to have my shark tweet me when he (or she, I’m no marine biologist) breaches the perimeter over to the sunny side of the tank.
Of course, I’m doing this with my toy shark-on-a-stick and only a laser level and a light sensor, but it’s possible to make this much more accurate and granular just by adding more strategically placed sensors/light sources into the mix…
As soon as the laser is obstructed by Bruce the shark himself, that light value drops. Once it’s below 400, the Android program issues a Red Alert warning that the sensor has been tripped, and sends a tweet.
Each Tuesday is BeagleBone Black Day here at Adafruit! What is the BeagleBone? The BeagleBones are a line of affordable single-board Linux computers (SBCs) created by Texas Instruments. New to the Bone? Grab one of our Adafruit BeagleBone Black Starter Packs and check out our extensive resources available on the Adafruit Learning System including a guide to setting up the Adafruit BeagleBone IO Python Library. We have a number of Bone accessories including add-on shields (called “capes”) and USB devices to help you do even more with your SBC. Need a nice display to go along with your Bone? Check out our fine selection of HDMI displays, we’ve tested all of them with the Beagle Bone Black!
This year the Disorient Camp at Burning Man built a 7m tall pyramid with over half a kilometer of LED strips. Several artists developed patterns for the panels, including Disorient founder Leo Villareal and Jacob Joaquin from Fresno Idea Works. Update 9/11/13 6:49pm ET: Naim Busek wrote in with the following note – “The project was led by myself in collaboration with Leo Villareal. Would greatly appreciate if you my name to the project description information. More interesting details. After I designed the circuit boards and proved out the major components the project spanned both costs with major contributions from Crashspace and NYC Resistor (forming the core of the hackerspace “Hack Rock City” on playa).
The pyramid was visible from just about everywhere on the playa and served as a great beacon for finding the camp after a long night out.
At the heart of the Disorient Pyramid, a Panasonic Toughbook laptop drives the animations, connected over Ethernet to four BeagleBone Blacks running LEDscape, each in turn USB-tethered to four Teensy 3s, each with eight strands of pixels…16,000 LEDs total. There’s more at the NYC Resistor blog, including videos and all the juicy technical details (including software links).
Featured Guide: Adafruit NeoPixel Überguide
Since their introduction less than a year ago, the humble NeoPixel has exploded into more than a dozen different varieties and form-factors. There are so many tips, tricks and frequently-asked questions, we’ve now collected them into a single densely-packed destination: the Adafruit NeoPixel Überguide!
I spent Tuesday afternoon strolling the expo floor at the Embedded Systems Conference (now one of several concurrent events under the “DESIGN West” banner). It’s a big industry show for component electronics and test equipment…mostly out of my league, to be honest…but nonetheless interesting to drop in and see what’s new and where things may be headed.
In one corner of the Texas Instruments booth, the BeagleBone and a number of add-ons were being showcased. A certain acrylic enclosure caught my eye.