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<head><title>Board of Education - USB</title>
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<p><a href="IdBoard.htm" title="Go back to &quot;Identify Your Board&quot;" alt="Go back to &quot;Identify Your Board&quot;"><img src="../Resources/Images/Prev.png" /></a><a href="BOEusb_setup.htm" title="Go on to &quot;Board of Education USB - Setup&quot;" alt="Go on to &quot;Board of Education USB - Setup&quot;"><img src="../Resources/Images/Next.png" /></a>
</p>
<h1>Board of Education - USB</h1>
<ul>
<li class="Checklist" value="1">Take a look at your board to get familiar with its parts.</li>
</ul>
<p>
<img src="../Resources/Images/BOE_USB_labels.png" />
</p>
<ol>
<li value="1"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">9V Battery Clip<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: You can use alkaline or rechargeable 9 volt batteries. The battery clip and barrel jack are intentionally positioned so you cannot use both at once.</span></span>
</li>
<li value="2"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Barrel Jack<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: This accepts a 2.1 mm center-positive barrel plug from a 6-9 V wall-mount supply or from a battery pack. You cannot use the barrel jack and a 9 volt battery at the same time.</span></span>
</li>
<li value="3"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Voltage regulator<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: Supplies regulated 5 V (up to 1 amp of current) for sockets and pins labeled Vdd. Vdd sockets are convenient for supplying 5 V to circuits you will build on the breadboard area.</span></span>
</li>
<li value="4"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Power Indicator LED<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: This LED&#160;will light up when power is supplied to your board and the power switch is in position 1 or 2. </span></span>
</li>
<li value="5"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Servo headers (X4 and X5) and Power Select Jumper<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: These each have two 3-pin connectors that bring power, ground, and I/O pin access together so you can easily plug in servos or other 3-pin devices. The power connection is pre-set to Vdd (+5 V) but you can set it to Vin (the board's supply voltage) by moving the shorting block on the jumper between the headers. Each 3-pin row is labeled with an I/O&#160;pin number above it. The 12, 13, 14, and 15 signal lines for the servo headers are also accessible as P12, P13, P14, and P15 I/O pin sockets on the X1 and X2 headers. This can be useful for building a servo signal indicator light on the breadboard as you may do in some Stamps in Class activities. For independent projects, keep these shared connections in mind, especially to avoid inadvertently connecting circuits with conflicting functions to the same I/O pin.</span></span>
</li>
<li value="6"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Power header (X3)<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: The sockets labeled Vdd connect to +5 VDC, Vin connects directly to the power supplied to the board by the battery clip or barrel jack, and Vss connects to 0 V (ground).</span></span>
</li>
<li value="7"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Breadboard<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">:The breadboard has metal clips that run underneath the white plastic board in a horizontal fashion. Each strip connects a 5-socket group, with two groups to each row, separated by a center trench. Wires or legs of components plugged into the same 5-socket group will be electrically connected. Components with many legs (such as pushbuttons or ICs), are placed in the middle of the board so that half of the legs are on the left side and half are on the right side of the trench. <i>Note: Always disconnect power before building or modifying circuits!</i></span></span>
</li>
<li value="8"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">I/O Pin Access Header (X2)<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">:The BASIC Stamp module's 16 I/O pins, labeled 0 to 15, are connected to this header. Its location adjacent to the breadboard makes it convenient for connecting circuits to I/O pins. Keep in mind that I/O pin access is also brought to the X4, X5, and X1 headers, so be careful not to build conflicting breadboard circuits if you are using these other headers as well.</span></span>
</li>
<li value="9"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">AppMod header (X1)<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">:The AppMod header provides power, I/O pins, Vdd, Vin, and Vss access for any devices that are designed to use this 2x10 socket. Examples include the LCD Terminal AppMod (#29121), CMUcam (#30051), Easy Bluetooth Module (#30085), and Say It voice recognition module (#30080).</span></span>
</li>
<li value="10"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Reset Button<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: The reset button can be used to restart your BASIC Stamp without having to cycle the power. This saves wear-and-tear on the power switch for simple program restarts. Some advanced programming techniques use the reset button and the BASIC Stamp EEPROM program and data storage as a way to toggle between different program functions.</span></span>
</li>
<li value="11"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">3-Position Power Switch<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: The leftmost position (0) is OFF – all power is disconnected. Always place the switch in this position when adding or changing components on the breadboard. The middle position (1) provides Vin (unregulated battery or power supply voltage) to the regulator, the BASIC Stamp socket, and to the connectors marked “Vin.” This switch position also makes Vdd (5 volts) available to Vdd sockets on the breadboard and AppMod connectors. The rightmost position (2) also provides power to the servo connectors X4 and X5. Especially if your program causes a robot with servos connected to X4/X5 to start moving immediately, you can keep the 3-position switch in position (1) while loading the program, then switch to position (2) when you are ready for the robot to start moving.</span></span>
</li>
<li value="12"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">Socket for BASIC Stamp<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: This socket is compatible with all 24-pin BASIC Stamp modules. It connects the BASIC Stamp to the programming connector, power, the power indicator LED, reset button, and all I/O&#160;pin headers.</span></span>
</li>
<li value="13"><span class="MCExpanding"><a href="javascript:void(0);" class="MCExpandingHead_0" onclick="FMCExpand( this ); return false;">USB Programming Connector<img style="border: none;margin-left: 5px;" src="../SkinSupport/ExpandingClosed.gif" MadCap:altsrc="../SkinSupport/ExpandingOpen.gif" onload="if ( typeof( FMCPreloadImage ) == 'function' ) { FMCPreloadImage( '../SkinSupport/ExpandingOpen.gif' ); }" class="MCExpandingIcon" /></a><span class="MCExpandingBody" style="display: none;">: This is a USB Mini B socket and USB to serial (RS-232) circuitry for programming and for two-way serial communication between the BASIC Stamp and your computer. The required USB&#160;drivers for Windows were included in the BASIC Stamp Editor software installer; see the <a href="../FAQTopics/USBdrivers.htm" target="" title="" alt="" class="MCXref_0">USB Drivers</a> page for more information.</span></span>
</li>
</ol>
<h2>BASIC Stamp Resets when Connecting USB </h2>
<p class="PlainText">When you connect your BASIC Stamp to a PC using a USB-based development board or adapter, the PC's operating system typically resets the BASIC Stamp several times as it tries to determine if a new plug-and-play device was just connected. </p>
<p class="PlainText">Each time a BASIC Stamp is reset, all program variables are cleared, and the program starts from the beginning. For tips on writing programs that have variable values that you do not want to lose when you connect your board to the PC, see the article <a href="../FAQTopics/UsbBoardResets.htm" target="" title="" alt="" class="MCXref_0">USB Resets BASIC Stamp</a>.</p>
<p>&#160;</p>
<p><a href="IdBoard.htm" title="Go back to &quot;Identify Your Board&quot;" alt="Go back to &quot;Identify Your Board&quot;"><img src="../Resources/Images/Prev.png" /></a><a href="BOEusb_setup.htm" title="Go on to &quot;Board of Education USB - Setup&quot;" alt="Go on to &quot;Board of Education USB - Setup&quot;"><img src="../Resources/Images/Next.png" /></a>
</p>
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<div class="MasterFoot">
<p MadCap:conditions="BSEconditions.BSEWebHelp (Primary)-INCLUDE"><a href="../HomeTopics/HomePage.htm">Go to Welcome page</a>
</p>
</div>
</div>
<div class="Col2">
<div class="MasterFoot">
<p style="text-align: right;"><span class="ContactInfoProjectName">BASIC Stamp Help</span> <![CDATA[ ]]><span class="ContactInfoVersion#">Version 2.5.4</span> <![CDATA[ ]]></p>
<p style="text-align: right;">Copyright ©&#160;<span class="ContactInfoCompanyName">Parallax Inc.</span></p>
<p style="text-align: right;"><span class="SystemShortDate">8/8/2012</span>
</p>
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