A typical TeleMetrum or TeleMini installation involves attaching
only a suitable Lithium Polymer battery, a single pole switch for
power on/off, and two pairs of wires connecting e-matches for the
- apogee and main ejection charges.
+ apogee and main ejection charges. All Altus Metrum products are
+ designed for use with single-cell batteries with 3.7 volts nominal.
</para>
<para>
By default, we use the unregulated output of the Li-Po battery directly
<section>
<title>Maximum Flight Log</title>
<para>
- TeleMetrum version 1.1 has 2MB of on-board flash storage,
+ TeleMetrum version 1.1 and 1.2 have 2MB of on-board flash storage,
enough to hold over 40 minutes of data at full data rate
(100 samples/second). TeleMetrum 1.0 has 1MB of on-board
storage. As data are stored at a reduced rate during descent
</para>
<para>
All of the configuration data is also stored in the flash
- memory, which consumes 64kB on TeleMetrum v1.1 and 256B on
+ memory, which consumes 64kB on TeleMetrum v1.1/v1.2 and 256B on
TeleMetrum v1.0. This configuration space is not available
for storing flight log data.
</para>
</para>
<para>
The default size, 192kB, allows for 10 flights of storage on
- TeleMetrum v1.1 and 5 flights on TeleMetrum v1.0. This
+ TeleMetrum v1.1/v1.2 and 5 flights on TeleMetrum v1.0. This
ensures that you won't need to erase the memory before
flying each time while still allowing more than sufficient
storage for each flight.
<para>
In the rocket itself, you just need a <ulink url="http://www.altusmetrum.org/TeleMetrum/">TeleMetrum</ulink> or
<ulink url="http://www.altusmetrum.org/TeleMini/">TeleMini</ulink> board and
- a Li-Po rechargeable battery. An 860mAh battery weighs less than a 9V
- alkaline battery, and will run a TeleMetrum for hours.
+ a single-cell, 3.7 volt nominal Li-Po rechargeable battery. An
+ 850mAh battery weighs less than a 9V alkaline battery, and will
+ run a TeleMetrum for hours.
A 110mAh battery weighs less than a triple A battery and will run a TeleMetrum for
a few hours, or a TeleMini for much (much) longer.
</para>
</listitem>
<listitem>
Select the image you want put on the TeleMetrum, which should have a
- name in the form telemetrum-v1.1-1.0.0.ihx. It should be visible
+ name in the form telemetrum-v1.2-1.0.0.ihx. It should be visible
in the default directory, if not you may have to poke around
your system to find it.
</listitem>