update docs

[web/altusmetrum] / AltOS / doc / motortest.html

diff --git a/AltOS/doc/motortest.html b/AltOS/doc/motortest.html
index ff47fae6c588c14ef54dc0686f3f2038af19bcd9..815650bd24a5b764ab5272ae1634f0e363fcb582 100644 (file)
--- a/AltOS/doc/motortest.html
+++ b/AltOS/doc/motortest.html
@@ -4,7 +4,7 @@
 <meta charset="UTF-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
-<meta name="generator" content="Asciidoctor 2.0.16">
+<meta name="generator" content="Asciidoctor 2.0.17">
 <meta name="author" content="Bdale Garbee">
 <meta name="copyright" content="Bdale Garbee 2021">
 <title>Motor Testing: Static and In-Flight Motor Performance Testing</title>
@@ -16,8 +16,8 @@
 <div class="details">
 <span id="author" class="author">Bdale Garbee</span><br>
 <span id="email" class="email"><a href="mailto:bdale@gag.com">bdale@gag.com</a></span><br>
-<span id="revnumber">version v1.9.11,</span>
-<span id="revdate">29 May 2022</span>
+<span id="revnumber">version v1.9.12,</span>
+<span id="revdate">28 Oct 2022</span>
 </div>
 <div id="toc" class="toc">
 <div id="toctitle">Table of Contents</div>
@@ -91,7 +91,7 @@ motor and get real performance data about it too!</p>
 can always be improved… If you have questions that aren&#8217;t answered in this
 manual, or just need a little help figuring things out, we strongly suggest
 joining the Altus Metrum user email list, which you can do by visiting
-<a href="https://lists.gag.com/mailman/listinfo/altusmetrum" class="bare">https://lists.gag.com/mailman/listinfo/altusmetrum</a>.</p>
+<a href="https://lists.gag.com/mailman3" class="bare">https://lists.gag.com/mailman3</a>.</p>
 </div>
 </div>
 </div>
@@ -135,14 +135,11 @@ be “down” towards the fins and motor nozzle end of the rocket.</p>
 <h3 id="_power_switch_and_battery">3.1. Power Switch and Battery</h3>
 <div class="paragraph">
 <p>In addition to the circuit board itself, EasyMotor needs
-a power switch and battery to operate. Unlike most other
-Altus Metrum products, EasyMotor does not work with
-single-cell LiPo batteries. That&#8217;s because commonly
-available inexpensive pressure sensors need 5V, which is
-more than a single-cell LiPo provides. Any battery that
-provides from 6.5 to about 15 volts should work. Good
-choices are the common 9V alkaline battery, or the very
-small and light A23 12V alkaline batteries.</p>
+a power switch and battery to operate.  Like many Altus
+Metrum products, EasyMotor requires a single-cell LiPo
+battery, and has an on-board charging circuit.  The 5V
+needed for inexpensive pressure sensors is generated
+onboard using a switching regulator to boost the voltage.</p>
 </div>
 <div class="paragraph">
 <p>Because he often mounts EasyMotor to the motor&#8217;s forward
@@ -170,7 +167,8 @@ from 0.5V at 0 to 4.5V at the maximum pressure supported
 by the sensor. Very inexpensive sensors that have a
 “1/8 NPT” threaded input, a “Buick-style” 3-pin connector,
 and typically ship with a short cable and mating
-connector, are readily available on eBay and AliExpress.</p>
+connector, are readily available through various vendors
+including Amazon, eBay, and AliExpress.</p>
 </div>
 <div class="paragraph">
 <p>To log in-flight chamber pressure, a typical approach
@@ -181,6 +179,12 @@ NPT” pipe tap. Fill the touch hole with grease, screw in
 the pressure sensor, and attach the sensor leads to
 EasyMotor.</p>
 </div>
+<div class="paragraph">
+<p>If you aren&#8217;t up for machining closures yourself,
+<a href="http://lokiresearch.com">Loki Research</a> sells
+54mm and 75mm "experimental bulkheads" with threaded
+sensor ports that can be used with snap ring cases.</p>
+</div>
 </div>
 </div>
 </div>
@@ -200,16 +204,18 @@ data 100 times per second throughout the flight.</p>
 </div>
 <div class="paragraph">
 <p>After flight, AltosUI can be used to download the flight data,
-then export it to a comma separated values (CSV) file. Such a
-file can easily be loaded into a spreadsheet for analysis.</p>
+view a quick graph of acceleration and pressure with pan and
+zoom capabilities, then export it to a comma separated values
+(CSV) file. Such a file can easily be loaded into a spreadsheet
+for analysis.</p>
 </div>
 </div>
 </div>
 </div>
 <div id="footer">
 <div id="footer-text">
-Version v1.9.11<br>
-Last updated 2022-05-29 21:31:42 -0600
+Version v1.9.12<br>
+Last updated 2022-10-28 23:33:07 -0600
 </div>
 </div>
 </body>