RasPi Magazine 11, Raspberry PI, RasPI - Magazyn 2015

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//-->ESIGNDUILDBCODE11MOTIONFACESANDDETECTdrum machinePlusCode aWelcomePicamera is a fantastic libraryfor the Raspberry Pi cameramodule, and we took a goodlook at it back in issue 6, butyou can do so much more with your cameramodule – and even USB cameras, if you’recontrolling them with your Raspberry Pi.Did you know that you can set up a regularwebcam to recognise faces, for example? Orthat you can create aMatrix-stylebullet timeeffect by chaining lots of camera modulestogether? We’ll show you how it’s done andmore in this special camera tricks issue ofRasPi.And if photography isn’t your passion,don’t worry – we’ve also got a great audiosampler project for you, plus guides to miningBitcoins and volunteering CPU power. Enjoy!Get inspiredDiscover the RasPicommunity’s best projectsExpert adviceGot a question? Get in touchand we’ll give you a handEasy-to-followguidesLearn to make and codegadgets with Raspberry PiEditorFrom the makers ofJoin the conversation at…@linuxusermagxusermagLinux User & Developerinux UDevelopeD lRasPi@imagine-publishing.co.ukRasPi@imagine pContentsCreate a time-lapse cameraShooting with your DSLR is a cinchDetect motion with picameraUse your camera module for home securityTurn a USB camera into a motion sensorAdd facial recognition to your surveillance setupBullet PiHow to freeze time using 48 camera modulesMake a drum machineCode a looping sampler for Pi-driven beatsWhat is ARM?Exploring the brain of your Raspberry PiMine BitcoinsFind out how to dig for virtual goldVolunteer CPU power with BOINCHelp scientists fold proteins and search for aliensTalking PiYour questions answered and your opinions sharedCreate a time-lapse cameraShooting time-lapse video with your DSLR camera is acinch if you get Python and your Pi involvedYou’d be forgiven for thinking that creatingmesmerising time-lapse videos like thoseof Vincent Laforet (www.laforetvisuals.com)or John Eklund (www.theartoftimelapse.com) mightbe out of reach of the Average Joe, but with the help ofthe Raspberry Pi and a sprinkling of Python code, that’sno longer the case. In this guide we’re going to use ourRaspberry Pi to trigger our run-of-the-mill DSLR camera(in this case a Canon EOS) to create pixel-perfect time-lapse imagery for little more than £10. Here’s how…THE PROJECTESSENTIALSBreadboard,connectors,jumper wireDSLR cameraCompatible shuttercableRaspbian withPython 2.701Set up the Raspberry PiFor this tutorial we’re assuming you’re using a recentbuild of Raspbian, which you can download fromwww.raspberrypi.org/downloads.With the RaspberryPi set up with a keyboard, mouse and monitor, openthe terminal and type:$ sudo apt-get update02Install the RPi.GPIO libraryNext we want to make sure your developmentenvironment is set up. Users of Raspian should beset up already, but you should follow these stepsanyway to make sure. In the terminal, type:“We’regoingto use ourRaspberry Pito trigger ourrun-of-the-millDSLR camerato create pixel-perfect time-lapse imagery”$ sudo apt-get install python-dev$ sudo apt-get installpython-rpi.gpio03Set up the Pi CobblerWith the development environment set up,we can turn our attention to the hardware.For this tutorial we’ve used a cheapprototyping breadboard and an Adafruit [ Pobierz całość w formacie PDF ]

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