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</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><b><span lang=EN-US>Magnetic Loop Antenna controlled by Arduino<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US><o:p> </o:p></span></b></p><p class=MsoNormal><span lang=EN-US>This video presents a Magnetic Loop antenna controlled by an Arduino <br><br>The YouTube description reads:<br><br>The controller system receives a command via infrared transmitter similar to a TV remote control.<br><br>There is a circuit responsible for the infrared receiver coupled to the Arduino.<br>Every action performed on the remote control is sent to the Arduino and treated by a program I developed specially to control the stepper motor.<br>That way I can move the capacitor clockwise and counterclockwise.<br>The current level demanded by the stepper motor is high, you cannot control it directly from the Arduino.<br>To solve this problem, I used a circuit based on the ULN2003.<br>To facilitate programming for the infrared receiver and the stepper motor, I used the public libraries for irRemote and Stepper (see references). With them I saved several lines of code.<br><br>My Magnetic Loop antenna was based on models collected on the Internet.<br>In particular, I used the instructions and tips from Alex (PY1AHD), which sells this kind of antenna with a better look than showed in this video (see </span><a href="http://www.alexloop.com/" target="_blank"><span lang=EN-US>http://www.alexloop.com/</span></a><span lang=EN-US>).<br><br>References:<br></span><a href="http://www.arduino.cc/" target="_blank"><span lang=EN-US>http://www.arduino.cc/</span></a><span lang=EN-US><br></span><a href="http://www.alexloop.com/" target="_blank"><span lang=EN-US>http://www.alexloop.com/</span></a><span lang=EN-US><br></span><a href="https://github.com/shirriff/Arduino-IRremote"><span lang=EN-US>https://github.com/shirriff/Arduino-IRremote</span></a><span lang=EN-US><br></span><a href="http://www.botskool.com/user-pages/tutorials/stepper-motor-controlling-using-uln2003" target="_blank"><span lang=EN-US>http://www.botskool.com/user-pages/tutorials/stepper-motor-controlling-using-uln2003</span></a><span lang=EN-US><br><br>You can see more about Magnetic Loop Antennas accessing these URLs:<br></span><a href="http://www.dxzone.com/catalog/Antennas/Magnetic_Loop/" target="_blank"><span lang=EN-US>http://www.dxzone.com/catalog/Antennas/Magnetic_Loop/</span></a><span lang=EN-US><br></span><a href="http://www.nonstopsystems.com/radio/frank_radio_antenna_magloop.htm" target="_blank"><span lang=EN-US>http://www.nonstopsystems.com/radio/<br>frank_radio_antenna_magloop.htm</span></a><span lang=EN-US><br><br>Watch Magnetic Loop Antenna controlled by Arduino<br><a href="http://www.youtube.com/embed/b3hUpQvO38k?rel=0">http://www.youtube.com/embed/b3hUpQvO38k?rel=0</a> <br><br><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>