ebadawy

<span style="color: rgb(51, 51, 51); font-family: 'Gotham SSm A', 'Gotham SSm B'; font-size: 30px; line-height: 30px;">Overview<br></span><span style="color: rgb(51, 51, 51); font-family: 'Gotham SSm A', 'Gotham SSm B'; font-size: 14px; line-height: 20px;">In this tutorial, you will learn how to control the color of an RGB LED using a BeagleBone Black (BBB).<br></span><span style="color: rgb(51, 51, 51); font-family: 'Gotham SSm A', 'Gotham SSm B'; font-size: 30px; line-height: 30px;"><img src="https://learn.adafruit.com/system/assets/assets/000/009/503/medium800/beaglebone_overview_web.jpg?1396892026" style="width: 403px;"><br></span><span style="color: rgb(51, 51, 51); font-family: 'Gotham SSm A', 'Gotham SSm B'; font-size: 14px; line-height: 20px;">Because the BBB runs Linux, there are many ways in which it can be programmed. In this tutorial we show how to control the power output of a GPIO pin and hence control the color of an RGB LED using Python.</span><span style="color: rgb(51, 51, 51); font-family: 

ebadawy

<h3>
  Build and execute instructions</h3><div><img src="http://beagleboard.org/static/uploads/LEDs.PNG" style="width: 337px;"><br></div><div><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li>Run the example code of the next card and observe USR3 blinking.</li><li>Alter the frequency and re-run the example.</li></ul></div>

ebadawy

<h3>
  Build and execute instructions</h3><div><img src="http://beagleboard.org/static/uploads/LEDs.PNG" style="width: 337px;"><br></div><div><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li>Run the example code of the next card and observe USR3 blinking.</li><li>Alter the frequency and re-run the example.</li></ul></div>

ebadawy

<h3>
  Build and execute instructions</h3><div><img src="http://beagleboard.org/static/uploads/LEDs.PNG" style="width: 337px;"><br></div><div><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li>Run the example code of the next card and observe USR3 blinking.</li><li>Alter the frequency and re-run the example.</li></ul></div>

ebadawy

<h3>
  Build and execute instructions</h3><div><img src="http://beagleboard.org/static/uploads/LEDs.PNG" style="width: 337px;"><br></div><div><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li>Run the example code of the next card and observe USR3 blinking.</li><li>Alter the frequency and re-run the example.</li></ul></div>

ebadawy

<h3>
  Build and execute instructions</h3><div><img src="http://beagleboard.org/static/uploads/LEDs.PNG" style="width: 337px;"><br></div><div><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li>Run the example code of the next card and observe USR3 blinking.</li><li>Alter the frequency and re-run the example.</li></ul></div>

ebadawy

<h1 style="font-size: 2em; font-family: Arial, Verdana, Helvetica, sans-serif; color: rgb(180, 162, 121); line-height: normal;">digitalRead(pin, [callback])</h1><p style="font-size: 1.1em; line-height: 1.3em; color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif;">Read the status of a digital I/O pin.</p><h2 style="font-size: 1.5em; font-family: Arial, Verdana, Helvetica, sans-serif; color: rgb(180, 162, 121); margin: 5px 0px; line-height: normal;">Arguments</h2><ul style="color: rgb(82, 82, 82); font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;"><li><em>pin</em>: the&nbsp;<a href="http://beagleboard.org/Support/BoneScript/#pin" style="color: rgb(222, 114, 36);">BeagleBone pin</a>&nbsp;identifier</li><li><em>callback</em>: called upon completion</li></ul><h2 style="font-size: 1.5em; font-family: Arial, Verdana, Helvetica, sans-serif; color: rgb(180, 162, 121); margin: 5px 0px; line-height: normal;">Return value</h2><ul style="color: rgb(82, 82, 82); font-family: Arial,