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<style> body.view_post { overflow: auto; padding: 0 20px; } body.view_post #raspihub_toolbar { padding: 0 20px; margin-left: -20px; margin-right: -20px; } </style> <div> <h1>Adafruit&#39;s Raspberry Pi Lesson 12. Sensing Movement</h1> <p>Sense movement and doors opening with your Raspberry Pi In this lesson, you will learn how to use the digital inputs on the GPIO connector with a door sensor and a PIR motion detector.</p> <p>Your browser doesn't support frames, here's the link <a href="http://learn.adafruit.com/adafruits-raspberry-pi-lesson-12-sensing-movement" rel="nofollow">http://learn.adafruit.com/adafruits-raspberry-pi-lesson-12-sensing-movement</a></p> </div>