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        <description></description>
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       <dc:date>2009-10-26T03:55:12+00:00</dc:date>
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                <rdf:li rdf:resource="http://wiki.mediaplaygrounds.co.uk/other/dog_source?rev=1232997201&amp;do=diff"/>
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    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/bluetooth_id?rev=1231388763&amp;do=diff">
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        <dc:date>2009-01-08T04:26:03+00:00</dc:date>
        <title>other:bluetooth_id</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/bluetooth_id?rev=1231388763&amp;do=diff</link>
        <description>This scans all the visible Bluetooth devices in the vicinity and puts the names on a web page. It is set to run and refresh the web page every 30 seconds.

The page is only available on the Pervasive Media Studio intranet. It should be fairly easy to modify this for an RFID setup.</description>
    </item>
    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/distance?rev=1231389123&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2009-01-08T04:32:03+00:00</dc:date>
        <title>other:distance</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/distance?rev=1231389123&amp;do=diff</link>
        <description>UTM

UTM (Universal Transverse Mercator) co-ordinates are an approximate mapping from the Earth's surface to flat regions. If your co-ordinates are in UTM then you can use pythagoras to calculate the distance between points:


distance = sqrt( (x1 - x2)^2 + (y1 - y2)^2 )</description>
    </item>
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        <dc:date>2009-01-26T19:13:21+00:00</dc:date>
        <title>other:dog_source</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/dog_source?rev=1232997201&amp;do=diff</link>
        <description>/* Robot Dog - backs away from nasty chemicals
 *
 * Tarim
 *
 * January 2009
 *
 */

// Chemical sensor thresholds
int UpperThresh = 185;
int LowerThresh = 185;

// Amount of time (milleseconds) that doggie will walk or stand still
int WalkSlice = 2000;
int StaySlice = 1000;

// Arduino pins
int LedPin = 13;        // Doggie heartbeat
int ForwardPin = 12;    // H-bridge motor input 1
int BackwardPin = 11;   // H-bridge motor input 2
int SpeedPin = 9;       // H-bridge motor enable
int ChemPin =…</description>
    </item>
    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/gumstix?rev=1231387553&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2009-01-08T04:05:53+00:00</dc:date>
        <title>other:gumstix</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/gumstix?rev=1231387553&amp;do=diff</link>
        <description>A collecion of, hopefully useful, stuff for the Happy Packages Gumstix.

Serial Connections

The two serial ports are slightly unusual 8-pin connectors as used by the old Apple Mac serial ports. The pin-out is available from &lt;http://pinouts.ru/SerialPorts/sgi8_pinout.shtml&gt;. There is no handshake. The centre pin (4) is Ground and the pins (3) and (5) either side are TXD and RXD. The console port is the one closer to the power socket.</description>
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    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/robot_dog_hacking?rev=1232997023&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2009-01-26T19:10:23+00:00</dc:date>
        <title>other:robot_dog_hacking</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/robot_dog_hacking?rev=1232997023&amp;do=diff</link>
        <description>As part of the Arnolfini Supertoys exhibition 2008/2009 - we spent one evening a week, dogging.

That's dogging as in modifying robot dogs to detect pollution.


	*  Natalie Jeremijenko
*  Pictures
*  Dog Source</description>
    </item>
    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/start?rev=1237540789&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2009-03-20T09:19:49+00:00</dc:date>
        <title>other:start</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/start?rev=1237540789&amp;do=diff</link>
        <description>Many of these projects have been inspired by or relate in some way to the Pervasive Media Studio, Bristol

Main


	*  Raw GPS - Reading GPS data directly by platforms such as Macromedia Flash
*  Robot Dog Hacking - Hacking Robot Dogs with Arduinos
*  Gumstix - Setting up Gumstix with Linux
*  Vicinity - SQL to keep track of who is within your vicinity
*  Bluetooth - A generalised Bluetooth push engine</description>
    </item>
    <item rdf:about="http://wiki.mediaplaygrounds.co.uk/other/usb_2?rev=1231388873&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2009-01-08T04:27:53+00:00</dc:date>
        <title>other:usb_2</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/usb_2?rev=1231388873&amp;do=diff</link>
        <description>The secret of whether a Windows XP machine has USB 1.1 or USB 2.0 is revealed by whether it has USB enhanced host controllers. If it's enhanced then it's 2.0, otherwise it's 1.1.

Control Panel -&gt; System folder -&gt; Hardware tab -&gt; Devices -&gt; Device Manager -&gt; Universal Serial Bus Controllers folder</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2009-01-08T04:20:53+00:00</dc:date>
        <title>other:vicinity</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/vicinity?rev=1231388453&amp;do=diff</link>
        <description>Some rough SQL to keep track of when pairs of players in a group first came within range of one and other. Mostly played about with in Access SQL but not very well tested...

Tables

There are 2 tables. The players table can be keyed and indexed on the Player field.</description>
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        <dc:date>2009-01-08T04:22:04+00:00</dc:date>
        <title>other:vicinity_php_code</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/vicinity_php_code?rev=1231388524&amp;do=diff</link>
        <description>&lt;html&gt;
&lt;head&gt;
&lt;title&gt;Swarm - Vicinity Testing&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;?php

/* Tarim / April 2008 / for Swarm MediaSandbox Project */



/* Tweak these to get the desired effects... */

// Read in $db, $dbuser, $dbpasswd
include 'consts.php';

// These are the boundaries on the range _squared_
$InnerRangeSquared = 3;
$OuterRangeSquared = 4;

// The root and data elements around nearby output
$Root = 'document';
$Nearby = 'nearby';
$Device = 'device';
$Time = 'time';

// Uncomment this to see th…</description>
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        <dc:format>text/html</dc:format>
        <dc:date>2009-01-08T04:42:11+00:00</dc:date>
        <title>other:what_makes_you_happy</title>
        <link>http://wiki.mediaplaygrounds.co.uk/other/what_makes_you_happy?rev=1231389731&amp;do=diff</link>
        <description>What's this on the footpath between the railway and the allotments from Mina Road and Boiling Wells Lane to Muller Road?</description>
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