[Firebug-cvs] firebug/web fireboard.html,1.2,1.3 overview.html,1.2,1.3

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Update of /cvsroot/firebug/firebug/web
In directory sc8-pr-cvs1:/tmp/cvs-serv23982/web

Modified Files:
	fireboard.html overview.html 
Log Message:
Lots more work on web page and spie paper.

Index: fireboard.html
===================================================================
RCS file: /cvsroot/firebug/firebug/web/fireboard.html,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** fireboard.html	21 Nov 2003 19:24:19 -0000	1.2
--- fireboard.html	22 Nov 2003 01:06:46 -0000	1.3
***************
*** 1,2 ****
--- 1,5 ----
+ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+ 
  <html xmlns="http://www.w3.org/1999/xhtml">

***************
*** 6,58 ****
      </title>
      <link rel="SHORTCUT ICON" href="./images/favicon.ico">
!     <link type="text/css" rel="stylesheet" href="firebug.css">
!     <meta name="author" content="David M. Doolin, UC Berkeley" />
    </head>

!     <body>

!       <h1>The Fire Board sensor platform</h1>

!       <p>
! 	The Fire Board is a collection of five sensors mounted on a 
!         printed circuit board, manufactured by 
!         <a href="http://www.xbow.com">Crossbow Technology, Inc.</a>,
!         and marketed under the product identification MTS420CA.
!       </p>

!       <p>
! 	<center>
! 	  <img src="./images/fireboard_top.jpg" height="195" 
! 	    alt="Top view of Fire Board" />
  	  <img src="./images/fireboard_bottom.jpg" height="195"
  	    alt="Bottom view of Fire Board" />
! 	</center>
!       </p>

!       <p>The sensors mounted on the Fire Board are:</p>
!       <ul>
! 	<li>Sensirion SHT11 temperature and humidity sensor.</li>
! 	<li>Intersema barometric pressure sensor.</li>
! 	<li>LeadTek 9546 GPS unit.</li>
! 	<li>ADXL 202AE accelerometer.</li>
! 	<li>Taos TLS257 light intensity sensor.</li>
!       </ul>

!       <h2>Sensirion SHT11 temperature and humidity sensor.</h2>

!       <p>
! 	Temperature and humidity data are collected using the 
! 	<a href="http://www.sensirion.com/en/sensors/humidity/default.htm">Sensirion SHT11.</a>
!       </p>

!       <img src="./images/SHT11_150px.jpg" alt="SHT11 Temperature and humidity sensor" />

        <p>
  	The Sensirion SHT11 sensor is manufactured by:

!       <pre>
    Sensirion AG
    Eggbuehlstrasse 14
--- 9,61 ----
      </title>
      <link rel="SHORTCUT ICON" href="./images/favicon.ico">
!       <link type="text/css" rel="stylesheet" href="firebug.css">
! 	<meta name="author" content="David M. Doolin, UC Berkeley" />
    </head>

!   <body>

!     <h1>The Fire Board sensor platform</h1>

!     <p>
!       The Fire Board is a collection of five sensors mounted on a 
!       printed circuit board, manufactured by 
!       <a href="http://www.xbow.com">Crossbow Technology, Inc.</a>,
!       and marketed under the product identification MTS420CA.
!     </p>

!     <p>
!       <center>
! 	<img src="./images/fireboard_top.jpg" height="195" 
! 	  alt="Top view of Fire Board" />
  	  <img src="./images/fireboard_bottom.jpg" height="195"
  	    alt="Bottom view of Fire Board" />
!       </center>
!     </p>

!     <p>The sensors mounted on the Fire Board are:</p>
!     <ul>
!       <li>Sensirion SHT11 temperature and humidity sensor.</li>
!       <li>Intersema barometric pressure sensor.</li>
!       <li>LeadTek 9546 GPS unit.</li>
!       <li>ADXL 202AE accelerometer.</li>
!       <li>Taos TLS257 light intensity sensor.</li>
!     </ul>

!     <h2>Sensirion SHT11 temperature and humidity sensor.</h2>

!     <p>
!       Temperature and humidity data are collected using the 
!       <a href="http://www.sensirion.com/en/sensors/humidity/default.htm">Sensirion SHT11.</a>
!     </p>

!     <img src="./images/SHT11_150px.jpg" alt="SHT11 Temperature and humidity sensor" />

        <p>
  	The Sensirion SHT11 sensor is manufactured by:

! 	<pre>
    Sensirion AG
    Eggbuehlstrasse 14
***************
*** 63,73 ****
    in...@se...
    http://www.sensirion.com
!       </pre>
!       
!       Spec sheet is located at:
!       @url http://www.sensirion.com/en/sensors/humidity/sensors_devices/sensorSHT11.htm
!     </p>
!       
!       <pre>
    Characteristics of the sensor, from the web page given above:

--- 66,76 ----
    in...@se...
    http://www.sensirion.com
!   </pre>
!     
!     Spec sheet is located at:
!     @url http://www.sensirion.com/en/sensors/humidity/sensors_devices/sensorSHT11.htm
!   </p>
!     
!     <pre>
    Characteristics of the sensor, from the web page given above:

***************
*** 108,116 ****
    Measurement input current: 0.5 mA
    Standby input current: 0.3 uA
!       </pre>

!       <h2>Intersema MS5534AP barometric pressure sensor.</h2>

!       <pre>
      * Integrated pressure sensor
      * Pressure range 300-1100 mbar
--- 111,119 ----
    Measurement input current: 0.5 mA
    Standby input current: 0.3 uA
!     </pre>

!     <h2>Intersema MS5534AP barometric pressure sensor.</h2>

!     <pre>
      * Integrated pressure sensor
      * Pressure range 300-1100 mbar
***************
*** 120,273 ****
      * 1 system clock line (32.768 kHz)
      * Low voltage / low power
!       </pre>

!       <p>
! 	<img src="./images/ms5534.jpg" alt="Intersema MS5534AP barometric pressure sensor" />
!       </p>

!       <h2>LeadTek 9546 GPS unit.</h2>

!       <p>
! 	The LeadTek 9546 GPS unit has 12 channels 
! 	"All-In-View" satellite tracking with cold/warm/hot 
! 	start times of 45/38/8 Seconds
! 	(respectively) a reacquisition time of 0.1 seconds
! 	and supports standard NMEA-0183 and SiRF binary protocols
! 	The hardware consists of SiRFstarII chipset with 
! 	embedded ARM7TDMI, an external antenna jack, 
! 	20 pin connector, and protective metal cover sheild,
! 	measuring 25.4 x 24.1 x 6.9 mm. 
!       </p>

!       <p>
! 	The GPS unit is relatively expensive to operate.
! 	From a cold start, it requires 65 mA of power,
! 	then runs until the GPS reading is stabilized.
! 	Since the FireBug application is statically 
! 	deployed, the GPS unit need only run until an
! 	accurate location fix has been obtained, at which 
! 	point the GPS is powered off.
!       </p>
!       <p>
! 	<img src="./images/leadtek_gps_9546.jpg" alt="LeadTek 9546 GPS unit" />
!       </p>

!       <h2>ADXL 202AE accelerometer.</h2>

!       <h2>Taos TSL250RD light intensity sensor.</h2>

!       The TSL250RD is a low power, light-to-voltage sensor
!       manufactured by 
!       <a href="http://www.taosinc.com">Texas Advanced Optoelectronic Solutions, Inc.</a>
!       The sensor combines a photodiode with a transimpedance amplifier on a 
!       monolithic IC measuring 1mm square.  Output voltage is directly proportional 
!       to the light intensity captured by the photodiode.

!       <p>
! 	<img src="./images/tsl250rd.jpg" alt="TSL250RD Light to voltage sensor" />
!       </p>

!       <h2>Summary of sensor characteristics</h2>

!       <table>
! 	<tr>
! 	  <td></td>
! 	  <td>SHT11</td>
! 	  <td>TSL250RD</td>
!           <td>LeadTek 9546</td>
! 	  <td>Intersema</td>
!           <td>ADXL 202AE</td>
! 	</tr>
! 	<tr>
! 	  <td>Supply voltage</td>
! 	  <td>2.4 - 5.5</td>
! 	  <td>2.7 - 5.5</td>
! 	  <td>3.3 +/- 5%</td>
! 	  <td>2.2 - 3.6</td>
! 	  <td>3.0 - 5.5</td>
! 	</tr>	
! 	<tr>
! 	  <td>Power consumption</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	</tr>	
! 	<tr>
! 	  <td>Measurement range</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>300 - 1100 mbar</td>
! 	  <td>+/- 2 g</td>
! 	</tr>	
! 	<tr>
! 	  <td>Accuracy</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	</tr>	
! 	<tr>
! 	  <td>Resolution</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	</tr>	
! 	<tr>
! 	  <td>Response time</td>
! 	  <td>4 sec.</td>
! 	  <td>???</td>
! 	  <td>45 sec. (cold)</td>
! 	  <td>1 sec.</td>
! 	  <td>???</td>
! 	</tr>	
! 	<tr>
! 	  <td>Operating temperature</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>???</td>
! 	  <td>-40 - +85 C</td>
! 	</tr>	
!       </table>

!       <h2>Control switches</h2>

!       <p>
! 	The MTS420CA has two ADG715 switches mounted in parallel
! 	on the I$^2$C bus.  Switch 0 is mounted on U7 and controls 
! 	the power to the sensors.  Switch 1 is on U9 and controls 
! 	I/O functionality.  

! 	These switches are controlled by the 
! 	MicaWBSwitch component, which uses a 
! 	parameterized interface to control 
! 	which switch is active.

! 	The switches may be operated independently of each 
! 	other, allowing the application to control the 
! 	power to each sensor to reduce power consumption.
!       </p>

!       <h1>Collecting Sensor Data From Fire Board</h1>

!       <p>
! 	The Data Structure for the communication data packet is defined in SensorMsg.h.
!       </p>
!       <center>
! 	<table class="code">
! 	  <tr class="code">
! 	    <td class="code">
! 	      <b>SensorMsg.h</b> 
! 	      <pre>
             typedef struct SensorMsg {
             uint16_t  MoteID;           //TOS_LOCAL_ADDR
--- 123,279 ----
      * 1 system clock line (32.768 kHz)
      * Low voltage / low power
!     </pre>

!     <p>
!       <img src="./images/ms5534.jpg" alt="Intersema MS5534AP barometric pressure sensor" />
!     </p>

!     <h2>LeadTek 9546 GPS unit.</h2>

!     <p>
!       The <a href="http://www.leadtek.com">LeadTek</a>
!       9546 GPS unit has 12 channels 
!       "All-In-View" satellite tracking with cold/warm/hot 
!       start times of 45/38/8 Seconds
!       (respectively) a reacquisition time of 0.1 seconds
!       and supports standard
!       <a href="http://www.nmea.org/pub/0183/index.html">NMEA-0183</a>
!       and <a href="http://www.sirf.com">SiRF</a> binary protocols
!       The hardware consists of SiRFstarII chipset with 
!       embedded ARM7TDMI, an external antenna jack, 
!       20 pin connector, and protective metal cover sheild,
!       measuring 25.4 x 24.1 x 6.9 mm. 
!     </p>

!     <p>
!       The GPS unit is relatively expensive to operate.
!       From a cold start, it requires 65 mA of power,
!       then runs until the GPS reading is stabilized.
!       Since the FireBug application is statically 
!       deployed, the GPS unit need only run until an
!       accurate location fix has been obtained, at which 
!       point the GPS is powered off.
!     </p>
!     <p>
!       <img src="./images/leadtek_gps_9546.jpg" alt="LeadTek 9546 GPS unit" />
!     </p>

!     <h2>ADXL 202AE accelerometer.</h2>

!     <h2>Taos TSL250RD light intensity sensor.</h2>

!     The TSL250RD is a low power, light-to-voltage sensor
!     manufactured by 
!     <a href="http://www.taosinc.com">Texas Advanced Optoelectronic Solutions, Inc.</a>
!     The sensor combines a photodiode with a transimpedance amplifier on a 
!     monolithic IC measuring 1mm square.  Output voltage is directly proportional 
!     to the light intensity captured by the photodiode.

!     <p>
!       <img src="./images/tsl250rd.jpg" alt="TSL250RD Light to voltage sensor" />
!     </p>

!     <h2>Summary of sensor characteristics</h2>

!     <table>
!       <tr>
! 	<td></td>
! 	<td>SHT11</td>
! 	<td>TSL250RD</td>
! 	<td>LeadTek 9546</td>
! 	<td>Intersema</td>
! 	<td>ADXL 202AE</td>
!       </tr>
!       <tr>
! 	<td>Supply voltage</td>
! 	<td>2.4 - 5.5</td>
! 	<td>2.7 - 5.5</td>
! 	<td>3.3 +/- 5%</td>
! 	<td>2.2 - 3.6</td>
! 	<td>3.0 - 5.5</td>
!       </tr>	
!       <tr>
! 	<td>Power consumption</td>
! 	<td>???</td>
! 	<td>1.7 mA</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
!       </tr>	
!       <tr>
! 	<td>Measurement range</td>
! 	<td>???</td>
! 	<td>1.5 - 2.5 V</td>
! 	<td>???</td>
! 	<td>300 - 1100 mbar</td>
! 	<td>+/- 2 g</td>
!       </tr>	
!       <tr>
! 	<td>Accuracy</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
!       </tr>	
!       <tr>
! 	<td>Resolution</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>???</td>
!       </tr>	
!       <tr>
! 	<td>Response time</td>
! 	<td>4 sec.</td>
! 	<td>260 us (voltage rise time)</td>
! 	<td>45 sec. (cold)</td>
! 	<td>1 sec.</td>
! 	<td>???</td>
!       </tr>	
!       <tr>
! 	<td>Operating temperature</td>
! 	<td>???</td>
! 	<td>0 - 70 C</td>
! 	<td>???</td>
! 	<td>???</td>
! 	<td>-40 - +85 C</td>
!       </tr>	
!     </table>

!     <h2>Control switches</h2>

!     <p>
!       The MTS420CA has two ADG715 switches mounted in parallel
!       on the I$^2$C bus.  Switch 0 is mounted on U7 and controls 
!       the power to the sensors.  Switch 1 is on U9 and controls 
!       I/O functionality.  

!       These switches are controlled by the 
!       MicaWBSwitch component, which uses a 
!       parameterized interface to control 
!       which switch is active.

!       The switches may be operated independently of each 
!       other, allowing the application to control the 
!       power to each sensor to reduce power consumption.
!     </p>

!     <h1>Collecting Sensor Data From Fire Board</h1>

!     <p>
!       The Data Structure for the communication data packet is defined in SensorMsg.h.
!     </p>
!     <center>
!       <table class="code">
! 	<tr class="code">
! 	  <td class="code">
! 	    <b>SensorMsg.h</b> 
! 	    <pre>
             typedef struct SensorMsg {
             uint16_t  MoteID;           //TOS_LOCAL_ADDR
***************
*** 279,304 ****
               AM_SENSORMSG = 128
             };
! 	      </pre>
! 	    </td>
! 	  </tr>
! 	</table>
!       </center>

!       <p>
! 	The mote attached with Fire Board sends data packet in AM 
! 	type through the RF.  The GenericBase is the receiver of 
! 	these packets. We use SensorPacket---a Java application program
! 	to resolve the temperature readout from the packet, and do 
! 	the mathmatics coversion from the readout to the actual 
! 	temperature.
!       </p>

!       <center>
! 	<table class="code">
! 	  <tr class="code">
! 	    <td class="code">
! 	      <b>SensorPacket.java</b> 
! 	      <pre>
        public String toString(byte [] packet) {
        String s = "Message <SensorMsg> \n";
--- 285,310 ----
               AM_SENSORMSG = 128
             };
! 	    </pre>
! 	  </td>
! 	</tr>
!       </table>
!     </center>

!     <p>
!       The mote attached with Fire Board sends data packet in AM 
!       type through the RF.  The GenericBase is the receiver of 
!       these packets. We use SensorPacket---a Java application program
!       to resolve the temperature readout from the packet, and do 
!       the mathmatics coversion from the readout to the actual 
!       temperature.
!     </p>

!     <center>
!       <table class="code">
! 	<tr class="code">
! 	  <td class="code">
! 	    <b>SensorPacket.java</b> 
! 	    <pre>
        public String toString(byte [] packet) {
        String s = "Message <SensorMsg> \n";
***************
*** 314,345 ****
  		return s;
  		}
! 	      </pre>
! 	    </td>
! 	  </tr>
! 	</table>
!       </center>
!       The actual temperature can be achieved by calibration with the following formula.
!       <center>
! 	<table class="code">
! 	  <tr class="code">
! 	    <td class="code">
! 	      <pre>
               Temperature= d1+d2*SO
               Celsius    : d1=-40, d2=0.01
               Fahrenheit : d1=-40, d2=0.018
               SO         : Sensor Output
! 	      </pre>
! 	    </td>
! 	  </tr>
! 	</table>
!       </center>
!       <p>
! 	The SensorPacket result will be like :

! 	<center>
! 	  <table class="code">
! 	    <tr class="code">
! 	      <td class="code">
! 		<pre>
            7e 00 0a 7d 06 03 00 99 99 f9 17 ed 55 0e 8b c9 98 89 b2 90 4e 40 08 88 98 8e cc
            0d cc b5 ba 99 98 0a 01 00
--- 320,351 ----
  		return s;
  		}
! 	    </pre>
! 	  </td>
! 	</tr>
!       </table>
!     </center>
!     The actual temperature can be achieved by calibration with the following formula.
!     <center>
!       <table class="code">
! 	<tr class="code">
! 	  <td class="code">
! 	    <pre>
               Temperature= d1+d2*SO
               Celsius    : d1=-40, d2=0.01
               Fahrenheit : d1=-40, d2=0.018
               SO         : Sensor Output
! 	    </pre>
! 	  </td>
! 	</tr>
!       </table>
!     </center>
!     <p>
!       The SensorPacket result will be like :

!       <center>
! 	<table class="code">
! 	  <tr class="code">
! 	    <td class="code">
! 	      <pre>
            7e 00 0a 7d 06 03 00 99 99 f9 17 ed 55 0e 8b c9 98 89 b2 90 4e 40 08 88 98 8e cc
            0d cc b5 ba 99 98 0a 01 00
***************
*** 357,378 ****
  		      [MoteID=03]
  		      [TempData=237]  [=19 Celsius Degree]  [=66 Fahrenheit Degree]
! 		    </pre>
! 	      </td>
! 	    </tr>
! 	  </table>
! 	</center>

! 	The final result checked for accuracy with 
! 	a Raytek Raynger ST infrared thermometer.
! 	<center>
! 	  <img src="./images/thermal_calib2.jpg">
! 	</center>

        <hr />

!       <p>
! 	Last updated: $Date$ by $Author$.
!       </p>

!     </body>
  </html>
--- 363,384 ----
  		      [MoteID=03]
  		      [TempData=237]  [=19 Celsius Degree]  [=66 Fahrenheit Degree]
! 	      </pre>
! 	    </td>
! 	  </tr>
! 	</table>
!       </center>

!       The final result checked for accuracy with 
!       a Raytek Raynger ST infrared thermometer.
!       <center>
! 	<img src="./images/thermal_calib2.jpg">
!       </center>

        <hr />

! 	<p>
! 	  Last updated: $Date$ by $Author$.
!     </p>

!   </body>
  </html>

Index: overview.html
===================================================================
RCS file: /cvsroot/firebug/firebug/web/overview.html,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** overview.html	20 Nov 2003 22:32:17 -0000	1.2
--- overview.html	22 Nov 2003 01:06:46 -0000	1.3
***************
*** 7,14 ****
    <head>
      <link type="text/css" rel="stylesheet" href="main.css" />
!     <link type="text/css" rel="stylesheet" href="firebug.css" />
!     <script language="JavaScript1.2" src="/main.js" type="text/javascript"></script>
!     <link rel="SHORTCUT ICON" href="./images/favicon.ico" />
!     <title>Overview of FireBug</title>
    </head>

--- 7,14 ----
    <head>
      <link type="text/css" rel="stylesheet" href="main.css" />
!       <link type="text/css" rel="stylesheet" href="firebug.css" />
! 	<script language="JavaScript1.2" src="/main.js" type="text/javascript"></script>
! 	<link rel="SHORTCUT ICON" href="./images/favicon.ico" />
! 	  <title>Overview of FireBug</title>
    </head>

***************
*** 22,29 ****

      <p>
!        FireBugs are GPS-enabled, wireless thermal sensors, or motes.
!        The FireBug network self-organizes into edge-hub
!        configurations. Hub motes act as as base stations, with the
!        following responsibilities: 
      </p>

--- 22,29 ----

      <p>
!       FireBugs are GPS-enabled, wireless thermal sensors, or motes.
!       The FireBug network self-organizes into edge-hub
!       configurations. Hub motes act as as base stations, with the
!       following responsibilities: 
      </p>

***************
*** 41,139 ****
        Enabling such a network requires the motes to 
        <a href="./surgepics.html">self-configure</a>.
!     <p>
! 
! 
!     <p>
!       GPS capabilities are explained <a href=
! 	"gps.html">here</a>.
!     </p>

!     <p>
!       Details of the <a href="./sensorarch.html">sensor
! 	architecture</a> include packet layouts, routing diagrams,
!       etc.
!     </p>

!     <h2>
!       FireBugs
!     </h2>

!     Each FireBug consists of a mote-sensor pair. The motes
!     provide power, radio communications, and processing for data
!     collected by the sensor.  The Crossbow 
!     <a href="./weatherboard.html">weatherboard</a> is an 
!     example of the kinds of sensors used in FireBug. 

!     <ul>
!       <li>
!         Hardware, manufacturer.
!       </li>
!       <li>
!         Software
!       </li>
!     </ul>

!     <h2>
!       Programming FireBug
!     </h2>

!     <p>
!       FireBug is programmed using the 
!       <a href="http://sourceforge.net/projects/tinyos">TinyOS</a>
!       embedded operating system, developed at UC Berkeley.
!       More information may be found <a href="./programming.html">here</a>.
!     </p>

!     <h2>
!       Controlling the network
!     </h2>

!     The controller 
!     <ul>
!       <li>
!         send commands to hub(s)/base station(s),
!       </li>
!       <li>
!         provides storage for mote data,
!       </li>
!       <li>
!         conducts data processing.
!       </li>
!     </ul>

!     The initial controller will be a personal computer running
!     the <a href="http://www.apache.org/">Apache</a> 
!     web server interfaced with MySQL using PHP.

!     <h2>
!       FireBug Command Center
!     </h2>

!     The FireBug Command Center provides user interaction for
!     controlling the FireBug network and displays real time
!     changes in the network. 
!     <center>
!       <img src="./images/sysarch.png" alt=
! 	"Schematic of FireBug System">
!     </center>

!     <hr />

!     <p>
!        Last Updated: $Date$ 
!        by $Author$.
!     </p>

    </body>
--- 41,130 ----
        Enabling such a network requires the motes to 
        <a href="./surgepics.html">self-configure</a>.
!       <p>

! 	<p>
! 	  GPS capabilities are explained <a href=
! 	    "gps.html">here</a>.
! 	</p>

! 	<p>
! 	  Details of the <a href="./sensorarch.html">sensor
! 	    architecture</a> include packet layouts, routing diagrams,
! 	  etc.
! 	</p>

! 	<h2>FireBugs</h2>

! 	<p>
! 	  Each FireBug consists of a mote/fireboard pair. The motes
! 	  provide power, radio communications, and processing capability 
! 	  for data collected by the sensor.  The Crossbow MTS420CA, or 
! 	  <a href="./fireboard.html">fireboard</a>, provides the sensing
! 	  hardware.  The mote and fireboard interface with a 52 pin 
! 	  connector.
! 	</p>

! 	<h2>
! 	  Programming FireBug
! 	</h2>

! 	<p>
! 	  FireBug is programmed using the 
! 	  <a href="http://sourceforge.net/projects/tinyos">TinyOS</a>
! 	  embedded operating system, developed at UC Berkeley.
! 	  More information may be found <a href="./programming.html">here</a>.
! 	</p>

! 	<h2>
! 	  Controlling the network
! 	</h2>

! 	The controller 
! 	<ul>
! 	  <li>
! 	    send commands to hub(s)/base station(s),
! 	  </li>
! 	  <li>
! 	    provides storage for mote data,
! 	  </li>
! 	  <li>
! 	    conducts data processing.
! 	  </li>
! 	</ul>

! 	The initial controller will be a personal computer running
! 	the <a href="http://www.apache.org/">Apache</a> 
! 	web server interfaced with MySQL using PHP.

! 	<h2>
! 	  FireBug Command Center
! 	</h2>

! 	The FireBug Command Center provides user interaction for
! 	controlling the FireBug network and displays real time
! 	changes in the network. 
! 	<center>
! 	  <img src="./images/sysarch.png" alt=
! 	    "Schematic of FireBug System">
! 	</center>

! 	<hr />

! 	  <p>
! 	    Last Updated: $Date$ 
! 	by $Author$.
!       </p>

    </body>