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!
First off, I would like to thank PT and Limor for the chance to post to the blog, this is an awesome opportunity.
I teach three high school courses in Energy Systems and am an avid developer/enjoyer of open source hardware, primarily Arduino based. Each of my courses focus on physics principles pertaining to energy (primarily electrical and mechanical) and reinforces them through in-depth lab projects that physically demonstrate the math. I really like the students to break out of theory and get their hands dirty with a lab, such as dissecting, measuring and reassembling internal combustions or making bio-fuel.
Over the past two years, I have integrated two Makerbots (a Cupcake and a Thing-o-Matic) into my curriculum, which the students have avidly been using to produce everything from compressed gas jet engine nozzles to hubs for scale wind turbines. I have also installed a 50watt Epilog Helix 24, which has been priceless in the design of shiftable gearboxes, enclosures, etc.
Some of my open source projects include:
- ArduSat, an Arduino based motherboard for what is to be historys first high school designed and built cubesat, TJ3Sat (www.tj3sat.wikidot.com)
- The VEXMAS shield, a joint endeavor with my good friend and fellow tinkerer Charles delaCuesta, which creates an interface between Arduino and ALL of the VEX hardware (http://code.google.com/p/vexmas-shield/)
- The Kilroy board, a Arduino compatible PICAXE 20X2 based development board that we use at the high school to teach 500+ freshman how to program and interface with hardware.
In contributing to the Adafruit blog, I would like to make as much of my expertise available to the community as possible and look forward to hear your questions, comments, complaints, etc.