Guide_Troubleshooting

Guide_Troubleshooting -

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Sheet1 Page 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/x <html> <head> <title>Arduino - Troubleshooting </title> <link rel='stylesheet' href='arduino.css' type='text/css' /> <meta name="verify-v1" content="TtxFIEJAB6zdJ509wLxjnapQzKAMNm9u0Wj4ho6wxIY=" /> </head> <body> <div id="page"> <!--PageHeaderFmt--> <div id="pageheader"> <div class="title"><a href="http://www.arduino.cc"/>Arduino</a></div> <div class="search"> <!-- SiteSearch Google --> <FORM method=GET action="http://www.google.com/search"> <input type=hidden name=ie value=UTF-8> <input type=hidden name=oe value=UTF-8> <INPUT TYPE=text name=q size=25 maxlength=255 value=""> <INPUT type=submit name=btnG VALUE="search"> <input type=hidden name=domains value="http://www.arduino.cc/"> <input type=hidden name=sitesearch value="http://www.arduino.cc/"> </FORM> <!-- SiteSearch Google --> </div> </div> <!--/PageHeaderFmt--> <!--PageLeftFmt--> <div id="pagenav" style="text-align: right">
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Sheet1 Page 3 </p> <p class='vspace'></p><p>"I had a bunch of virtual COM ports set up for Bluetooth so the board was set to </p> <p class='vspace'></p><p>On the Mac, if you have an old version of the FTDI drivers, you may need to rem </p> <p class='vspace'></p><h3><a name='toc16' id='toc16'></a>What if I get a gnu.<span class='wikiword'>io.P <pre> Error inside Serial.&lt gnu.io.PortInUseException: Unknown Application at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354) at processing.app.Serial.&lt at processing.app.Serial.&lt </pre> <p class='vspace'></p><p>This probably means that the port is actually in use by another application. Plea </p> <p class='vspace'></p><p>If you get this error with Arduino 0004 or earlier, or with Processing, you'll need t </p> <p class='vspace'></p><h3><a name='toc17' id='toc17'></a>I'm having trouble with the FTDI USB drivers.< <p>Try installing the <a class='urllink' href='http://www.ftdichip.com/Drivers/VCP.htm' rel='nofollow'>latest dr </p> <p class='vspace'></p><p><a name='sketchstart' id='sketchstart'></a> </p><h3><a name='toc18' id='toc18'></a>Why doesn't my sketch start when I power up or reset the Arduino <p>Most likely because you are sending serial data to the board when it firsts turns on. During the first few </p> <p class='vspace'></p><h3><a name='toc19' id='toc19'></a>Why does my sketch appear to upload succes <p>You have selected the wrong item from the Tools &gt </p> <p class='vspace'></p><p>Check for a noisy power supply. It's possible this could cause the chip to lose its </p> <p class='vspace'></p><p>Alternatively, the sketch may be too big for the board. When uploading your ske </p> <p class='vspace'></p><p>If you have access to an AVR-ISP or parallel port programmer, you can burn the </p> <p class='vspace'></p><p><a name='size' id='size'></a> </p><h3><a name='toc20' id='toc20'></a>How can I reduce the size of my sketch?</h3> <p>The <span class='wikiword'>ATmega168</span> chip on the Arduino board is cheap, but it has only 16 </p> <p class='vspace'></p><p>If you're using floating point, try to rewrite your code with integer math, which sho </p> <p class='vspace'></p><p>Otherwise, see if you can make your program shorter.
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Guide_Troubleshooting -

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