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<p><strong>Reference</strong> &nbsp; <a class='wikilink' href='index.html'>Language</a> (<a class='wikilink' href='Extended.html'>extended</a>) | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a>
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<p class='vspace'></p><h2>Servo library</h2>
<p>This library allows an Arduino board to control one or two RC (hobby) servo motors. Servos have integrated gears and a shaft that can precisely controlled. Standard servos allow the shaft to be positioned at various angles, usually between 0 and 180 degrees. Continuous rotation servos allow the rotation of the shaft to be set to various speeds.
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<p class='vspace'></p><p>As of Arduino 0017, the Servo library supports up to 12 motors on most Arduino boards and 48 on the Arduino Mega. In Arduino 0016 and earlier, this library uses functionality built in to the hardware, and works only on pins 9 and 10 (and does not work on the Arduino Mega). In this case, if only one servo is used, the other pin cannot be used for normal PWM output with analogWrite(). For example, in Arduino 0016 and earlier, you can't have a servo on pin 9 and PWM output on pin 10.
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<p class='vspace'></p><h4>Circuit</h4>
<p>Servo motors have three wires: power, ground, and signal. The power wire is typically red, and should be connected to the 5V pin on the Arduino board. The ground wire is typically black or brown and should be connected to a ground pin on the Arduino board. The signal pin is typically yellow, orange or white and should be connected to a digital pin on the Arduino board.
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<p class='vspace'></p><h4>Functions</h4>
<ul><li><a class='wikilink' href='ServoAttach.html'>attach()</a>
</li><li><a class='wikilink' href='ServoWrite.html'>write()</a>
</li><li><a class='wikilink' href='ServoRead.html'>read()</a>
</li><li><a class='wikilink' href='ServoAttached.html'>attached()</a>
</li><li><a class='wikilink' href='ServoDetach.html'>detach()</a>
</li></ul><p class='vspace'></p><h4>Examples</h4>
<ul><li><a class='wikilink' href='http://arduino.cc/en/Tutorial/Sweep'>Sweep</a>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
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