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diff --git a/sqrls.html b/sqrls.html new file mode 100644 index 0000000..50352f3 --- /dev/null +++ b/sqrls.html @@ -0,0 +1,154 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" +"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head><title>virtual sqrls hardware</title> +<style type="text/css"> +table { + border-collapse: collapse; } +table th,td { + padding: 3px; + border: 1px black solid; } +</style> +</head> +<body style="margin: 25px; font-family: helvetica;"> +<h1 style="border-bottom: 2px solid;"> +virtual sqrls hardware</h1> +<i><a href="http://bnewbold.net">bnewbold</a>, <a href="http://git.bnewbold.net/?p=pysqrls.git;a=summary">git repository</a></i><br /> + +<h2>Basic Design</h2> +Arduino microcontrollers output audio via PWM method (see links). Signal is +amplified by audio amp then output to speaker over variable length cables. 4 +potentiometers per board allow adjustment of volume, timing, and two +software adjustments. There are two amps/speakers for each arduino and 5 +arduinos total. Each board/package is powered by a 5v wall wart. + +<h2>Notes</h2> +<p /> +Arduinos and protoboards were chosen in the interest of time and reusability; +the cost will be about $37 each for those units (could drive at least 4 +speakers each if they had to?); chosing cheaper components like PICs and +plain grid boards could bring the cost down to $10-15 but would require a lot +of design, assembly, debuging, and would not be as easily reused afterwards. +<p /> +The number of power supplies could be reduced if we ran power wires between +the units. +<p /> +The amount of "power wire" will depend on the physical situation, but this +should be super cheap and we could get more at a hardware store last minute. +<p /> +This all assumes tools and consumables like solder are availble (I have plenty). + +<h2>Parts list</h2> +<p /> +N is the number of distinct microcontoller "units" (5?); M is the +number of speakers with distinct outputs (5?). I say +1 on the cheap stuff in +case something breaks or gets lost. + +<table> +<tr /><th>How many</th><th>What</th><th>Specific Part</th> +<th>Cost Each (rounded)</th> +<th>From where</th> + + +<tr style="color:grey;" /><td />5 + <td />Motion Sensors + <td />Parallax PIR Sensor Module<br />#555-28027 + <td /> + <td />Mouser <br />(already purchased)</i> + +<tr /><td />5 + <td />Arduino Pro Board + <td />328 5v/16MHz DEV-08943 <br />(sparkfun version) + <td />$20 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9219">link</a>) + +<tr /><td />5 + <td />Arduino Protoboard + <td />DEV-07914 <br />(sparkfun version) + <td />$17 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=7914">link</a>) + +<tr /><td />5 + <td />Straight Pin Headers, 40x1 + <td />PRT-00116<br />(sparkfun version) + <td />$2.50 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=116">link</a>) + +<tr /><td />1 + <td />FTDI-USB Breakout (Programming) + <td />DEV-09115 + <td />$14 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9115">link</a>) + +<tr /><td />5 + <td />Wall Power supply (AC to 5v DC) + <td />EPS050100-P5RP + <td />$7.25 + <td />Digikey(<a href="http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=T1038-P5RP-ND">link</a>) + +<tr /><td />??ft + <td />Power wire (high gauge) + <td /> + <td /> + <td />Radioshack? + +<tr /><td />10 + <td />Speaker + <td />4ohm 3watt<br />COM-09149 (sparkfun) + <td />$2.50 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9149">link</a>) + +<tr /><td />11 + <td />Audio Amp (5v) + <td />5w stereo 12pin<br />Panasonic AN17822A + <td />$2.25 + <td />Digikey (<a href="http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AN17822A-ND">link</a>) + +<tr /><td />21 + <td />Adjustment Potentiometers + <td />10k Ohm through-hole mount<br />EVN-D8AA03B14 + <td />$0.40 + <td />Digikey (<a href="http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=D4AA14-ND">link</a>) + +<tr /><td />3 + <td />Rolls of stranded wire + <td />25ft each of Black, Red, White, 22awg + <td />$2.50 + <td />Sparkfun (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=8867">link</a>) +</table> +<p /><b>Total cost estimate: $300</b> + +<h2>Useful Links</h2> +<ul> + <li />http://www.arduino.cc/en/Main/ArduinoBoardPro + <li />http://www.sparkfun.com/commerce/product_info.php?products_id=9219 + <li />http://www.uchobby.com/index.php/2007/11/11/arduino-sound-part-1/ + <li />http://www.k9spud.com/traxmod/pwmdac.php + <li />http://www.arduino.cc/playground/Code/PCMAudio +</ul> + +<h2>Helpful Emails</h2> +<blockquoteha>haha there are none!</blockquote> + +<!-- +<h2>[[[section]]]</h2> + +<b>[[[todo-item]]]</b> +<span style="font-weight:bold; color:#00CC00;">([[[todo-status]]))</span> +<br />lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum +<br /><br /> + +<b>[[[todo-item]]]</b> +<span style="font-weight:bold; color:#orange;">([[[todo-status]]))</span> +<br />lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum +<br /><br /> + +<b>[[[todo-item]]]</b> +<span style="font-weight:bold; color:#red;">([[[todo-status]]))</span> +<br />lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum lorem ipsum +<br /><br /> +--> + +</body> +</html> + |