</para>
</legalnotice>
<revhistory>
+ <revision>
+ <revnumber>1.1.1</revnumber>
+ <date>16 September 2012</date>
+ <revremark>
+ Updated for software version 1.1.1 Version 1.1.1 fixes a few
+ bugs found in version 1.1.
+ </revremark>
+ </revision>
<revision>
<revnumber>1.1</revnumber>
<date>13 September 2012</date>
apogee and main ejection charges. All Altus Metrum products are
designed for use with single-cell batteries with 3.7 volts nominal.
</para>
+ <para>
+ The battery connectors are a standard 2-pin JST connector and
+ match batteries sold by Spark Fun. These batteries are
+ single-cell Lithium Polymer batteries that nominally provide 3.7
+ volts. Other vendors sell similar batteries for RC aircraft
+ using mating connectors, however the polarity for those is
+ generally reversed from the batteries used by Altus Metrum
+ products. In particular, the Tenergy batteries supplied for use
+ in Featherweight flight computers are not compatible with Altus
+ Metrum flight computers or battery chargers. <emphasis>Check
+ polarity and voltage before connecting any battery not purchased
+ from Altus Metrum or Spark Fun.</emphasis>
+ </para>
<para>
By default, we use the unregulated output of the Li-Po battery directly
to fire ejection charges. This works marvelously with standard
<para>
You can monitor the operation of the radio link by watching the
lights on the devices. The red LED will flash each time a packet
- is tramsitted, while the green LED will light up on TeleDongle when
+ is transmitted, while the green LED will light up on TeleDongle when
it is waiting to receive a packet from the altimeter.
</para>
</section>
incorrect data from being reported.
</para>
</listitem>
+ <listitem>
+ <para>
+ The age of the displayed data, in seconds since the last
+ successfully received telemetry packet. In normal operation
+ this will stay in the low single digits. If the number starts
+ counting up, then you are no longer receiving data over the radio
+ link from the flight computer.
+ </para>
+ </listitem>
</itemizedlist>
<para>
Finally, the largest portion of the window contains a set of
be below 10m/s when under the main parachute in a dual-deploy flight.
</para>
<para>
- For TeleMetrum altimeters, you can locate the rocket in the sky
- using the elevation and
- bearing information to figure out where to look. Elevation is
- in degrees above the horizon. Bearing is reported in degrees
- relative to true north. Range can help figure out how big the
- rocket will appear. Note that all of these values are relative
- to the pad location. If the elevation is near 90°, the rocket
- is over the pad, not over you.
+ For TeleMetrum altimeters, you can locate the rocket in the
+ sky using the elevation and bearing information to figure
+ out where to look. Elevation is in degrees above the
+ horizon. Bearing is reported in degrees relative to true
+ north. Range can help figure out how big the rocket will
+ appear. Ground Distance shows how far it is to a point
+ directly under the rocket and can help figure out where the
+ rocket is likely to land. Note that all of these values are
+ relative to the pad location. If the elevation is near 90°,
+ the rocket is over the pad, not over you.
</para>
<para>
Finally, the igniter voltages are reported in this tab as
</listitem>
<listitem>
<para>
- RF interface for battery charging, configuration, and data recovery.
+ RF interface for configuration, and data recovery.
</para>
</listitem>
<listitem>
<appendix
xmlns:xi="http://www.w3.org/2001/XInclude">
<title>Release Notes</title>
- <xi:include href="release-notes-1.1.xsl" xpointer="xpointer(/article/*)"/>
- <xi:include href="release-notes-1.0.1.xsl" xpointer="xpointer(/article/*)"/>
- <xi:include href="release-notes-0.9.2.xsl" xpointer="xpointer(/article/*)"/>
- <xi:include href="release-notes-0.9.xsl" xpointer="xpointer(/article/*)"/>
- <xi:include href="release-notes-0.8.xsl" xpointer="xpointer(/article/*)"/>
- <xi:include href="release-notes-0.7.1.xsl" xpointer="xpointer(/article/*)"/>
+ <simplesect><title>Version 1.1.1</title><xi:include href="release-notes-1.1.1.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 1.1</title><xi:include href="release-notes-1.1.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 1.0.1</title><xi:include href="release-notes-1.0.1.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 0.9.2</title><xi:include href="release-notes-0.9.2.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 0.9</title><xi:include href="release-notes-0.9.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 0.8</title><xi:include href="release-notes-0.8.xsl" xpointer="xpointer(/article/*)"/></simplesect>
+ <simplesect><title>Version 0.7.1</title><xi:include href="release-notes-0.7.1.xsl" xpointer="xpointer(/article/*)"/></simplesect>
</appendix>
</book>