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-<!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><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>MicroPeak Owner’s Manual</title><link rel="stylesheet" type="text/css" href="am.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /></head><body><div xml:lang="en" class="book" lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="idm45474891171088"></a>MicroPeak Owner’s Manual</h1></div><div><h2 class="subtitle">A recording altimeter for hobby rocketry</h2></div><div><h3 class="corpauthor">
+<!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><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>MicroPeak Owner’s Manual</title><link rel="stylesheet" type="text/css" href="am.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /></head><body><div xml:lang="en" class="book" lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="idm1"></a>MicroPeak Owner’s Manual</h1></div><div><h2 class="subtitle">A recording altimeter for hobby rocketry</h2></div><div><h3 class="corpauthor">
<span class="inlinemediaobject"><img src="micropeak-oneline.svg" width="270" /></span>
-</h3></div><div><div class="author"><h3 class="author"><span class="firstname">Keith</span> <span class="surname">Packard</span></h3><code class="email"><<a class="email" href="mailto:keithp@keithp.com">keithp@keithp.com</a>></code></div></div><div><p class="copyright">Copyright © 2014 Keith Packard</p></div><div><div class="legalnotice"><a id="idm45474893066160"></a><p>
+</h3></div><div><div class="author"><h3 class="author"><span class="firstname">Keith</span> <span class="surname">Packard</span></h3><code class="email"><<a class="email" href="mailto:keithp@keithp.com">keithp@keithp.com</a>></code></div></div><div><p class="copyright">Copyright © 2018 Keith Packard</p></div><div><div class="legalnotice"><a id="idm19"></a><p>
This document is released under the terms of the
<a class="ulink" href="http://creativecommons.org/licenses/by-sa/3.0/" target="_top">
Creative Commons ShareAlike 3.0
like this.</p><p>Have fun using these products, and we hope to meet all of you
out on the rocket flight line somewhere.</p><div class="blockquote"><blockquote class="blockquote"><div class="literallayout"><p>Bdale Garbee, KB0G<br />
NAR #87103, TRA #12201</p></div></blockquote></div><div class="blockquote"><blockquote class="blockquote"><div class="literallayout"><p>Keith Packard, KD7SQG<br />
-NAR #88757, TRA #12200</p></div></blockquote></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="#_using_micropeak">1. Using MicroPeak</a></span></dt><dt><span class="chapter"><a href="#_the_micropeak_usb_adapter">2. The MicroPeak USB adapter</a></span></dt><dd><dl><dt><span class="section"><a href="#_installing_the_micropeak_software">2.1. Installing the MicroPeak software</a></span></dt><dt><span class="section"><a href="#_downloading_micro_peak_data">2.2. Downloading Micro Peak data</a></span></dt><dt><span class="section"><a href="#_analyzing_micropeak_data">2.3. Analyzing MicroPeak Data</a></span></dt><dd><dl><dt><span class="section"><a href="#_micropeak_graphs">2.3.1. MicroPeak Graphs</a></span></dt><dt><span class="section"><a href="#_micropeak_flight_statistics">2.3.2. MicroPeak Flight Statistics</a></span></dt><dt><span class="section"><a href="#_raw_flight_data">2.3.3. Raw Flight Data</a></span></dt><dt><span class="section"><a href="#_configuring_the_graph">2.3.4. Configuring the Graph</a></span></dt></dl></dd><dt><span class="section"><a href="#_setting_micropeak_preferences">2.4. Setting MicroPeak Preferences</a></span></dt></dl></dd><dt><span class="appendix"><a href="#_handling_precautions">A. Handling Precautions</a></span></dt><dt><span class="appendix"><a href="#_technical_information">B. Technical Information</a></span></dt><dd><dl><dt><span class="section"><a href="#_barometric_sensor">B.1. Barometric Sensor</a></span></dt><dt><span class="section"><a href="#_micro_controller">B.2. Micro-controller</a></span></dt><dt><span class="section"><a href="#_lithium_battery">B.3. Lithium Battery</a></span></dt><dt><span class="section"><a href="#_atmospheric_model">B.4. Atmospheric Model</a></span></dt><dt><span class="section"><a href="#_mechanical_considerations">B.5. Mechanical Considerations</a></span></dt><dt><span class="section"><a href="#_micropeak_programming_interface">B.6. MicroPeak Programming Interface</a></span></dt></dl></dd><dt><span class="appendix"><a href="#_on_board_data_storage">C. On-board data storage</a></span></dt></dl></div><div class="list-of-figures"><p><strong>List of Figures</strong></p><dl><dt>1.1. <a href="#idm45474890090832">MicroPeak and Battery</a></dt><dt>2.1. <a href="#idm45474888707168">MicroPeak USB Adapter</a></dt><dt>2.2. <a href="#idm45474891114272">MicroPeak Application</a></dt><dt>2.3. <a href="#idm45474889649952">MicroPeak Device Dialog</a></dt><dt>2.4. <a href="#idm45474889692256">MicroPeak Download Dialog</a></dt><dt>2.5. <a href="#idm45474890780960">MicroPeak Downloading</a></dt><dt>2.6. <a href="#idm45474888934272">MicroPeak Save Dialog</a></dt><dt>2.7. <a href="#idm45474890216176">MicroPeak Graph</a></dt><dt>2.8. <a href="#idm45474890210176">MicroPeak Flight Statistics</a></dt><dt>2.9. <a href="#idm45474888705120">MicroPeak Raw Flight Data</a></dt><dt>2.10. <a href="#idm45474887946960">MicroPeak Graph Configuration</a></dt><dt>2.11. <a href="#idm45474888384656">MicroPeak Preferences</a></dt></dl></div><div class="list-of-tables"><p><strong>List of Tables</strong></p><dl><dt>C.1. <a href="#idm45474893118336">MicroPeak EEPROM Data Storage</a></dt></dl></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a id="_using_micropeak"></a>Chapter 1. Using MicroPeak</h1></div></div></div><p>MicroPeak is designed to be easy to use. Requiring no external
+NAR #88757, TRA #12200</p></div></blockquote></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="#_using_micropeak">1. Using MicroPeak</a></span></dt><dt><span class="chapter"><a href="#_the_micropeak_usb_adapter">2. The MicroPeak USB adapter</a></span></dt><dd><dl><dt><span class="section"><a href="#_installing_the_micropeak_software">2.1. Installing the MicroPeak software</a></span></dt><dt><span class="section"><a href="#_downloading_micro_peak_data">2.2. Downloading Micro Peak data</a></span></dt><dt><span class="section"><a href="#_analyzing_micropeak_data">2.3. Analyzing MicroPeak Data</a></span></dt><dd><dl><dt><span class="section"><a href="#_micropeak_graphs">2.3.1. MicroPeak Graphs</a></span></dt><dt><span class="section"><a href="#_micropeak_flight_statistics">2.3.2. MicroPeak Flight Statistics</a></span></dt><dt><span class="section"><a href="#_raw_flight_data">2.3.3. Raw Flight Data</a></span></dt><dt><span class="section"><a href="#_configuring_the_graph">2.3.4. Configuring the Graph</a></span></dt></dl></dd><dt><span class="section"><a href="#_setting_micropeak_preferences">2.4. Setting MicroPeak Preferences</a></span></dt></dl></dd><dt><span class="appendix"><a href="#_handling_precautions">A. Handling Precautions</a></span></dt><dt><span class="appendix"><a href="#_technical_information">B. Technical Information</a></span></dt><dd><dl><dt><span class="section"><a href="#_barometric_sensor">B.1. Barometric Sensor</a></span></dt><dt><span class="section"><a href="#_micro_controller">B.2. Micro-controller</a></span></dt><dt><span class="section"><a href="#_lithium_battery">B.3. Lithium Battery</a></span></dt><dt><span class="section"><a href="#_atmospheric_model">B.4. Atmospheric Model</a></span></dt><dt><span class="section"><a href="#_mechanical_considerations">B.5. Mechanical Considerations</a></span></dt><dt><span class="section"><a href="#_micropeak_programming_interface">B.6. MicroPeak Programming Interface</a></span></dt></dl></dd><dt><span class="appendix"><a href="#_on_board_data_storage">C. On-board data storage</a></span></dt></dl></div><div class="list-of-figures"><p><strong>List of Figures</strong></p><dl><dt>1.1. <a href="#idm67">MicroPeak and Battery</a></dt><dt>2.1. <a href="#idm98">MicroPeak USB Adapter</a></dt><dt>2.2. <a href="#idm128">MicroPeak Application</a></dt><dt>2.3. <a href="#idm138">MicroPeak Device Dialog</a></dt><dt>2.4. <a href="#idm148">MicroPeak Download Dialog</a></dt><dt>2.5. <a href="#idm158">MicroPeak Downloading</a></dt><dt>2.6. <a href="#idm168">MicroPeak Save Dialog</a></dt><dt>2.7. <a href="#idm186">MicroPeak Graph</a></dt><dt>2.8. <a href="#idm196">MicroPeak Flight Statistics</a></dt><dt>2.9. <a href="#idm206">MicroPeak Raw Flight Data</a></dt><dt>2.10. <a href="#idm216">MicroPeak Graph Configuration</a></dt><dt>2.11. <a href="#idm226">MicroPeak Preferences</a></dt></dl></div><div class="list-of-tables"><p><strong>List of Tables</strong></p><dl><dt>C.1. <a href="#idm300">MicroPeak EEPROM Data Storage</a></dt></dl></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a id="_using_micropeak"></a>Chapter 1. Using MicroPeak</h1></div></div></div><p>MicroPeak is designed to be easy to use. Requiring no external
components, flying takes just a few steps</p><div class="variablelist"><dl class="variablelist"><dt><span class="term">
Install the battery
</span></dt><dd>
(+) terminal should be towards the more open side of the
carrier. Slip the carrier into the battery holder with the
positive (+) terminal facing away from the circuit board.
-</dd></dl></div><div class="figure"><a id="idm45474890090832"></a><p class="title"><strong>Figure 1.1. MicroPeak and Battery</strong></p><div class="figure-contents"><div class="mediaobject"><img src="micropeak-back.jpg" width="405" alt="micropeak-back.jpg" /></div></div></div><br class="figure-break" /><div class="variablelist"><dl class="variablelist"><dt><span class="term">
+</dd></dl></div><div class="figure"><a id="idm67"></a><p class="title"><strong>Figure 1.1. MicroPeak and Battery</strong></p><div class="figure-contents"><div class="mediaobject"><img src="micropeak-back.jpg" width="405" alt="micropeak-back.jpg" /></div></div></div><br class="figure-break" /><div class="variablelist"><dl class="variablelist"><dt><span class="term">
Install MicroPeak in your rocket
</span></dt><dd>
This can be as simple as preparing a soft cushion of wadding
Turn MicroPeak off and then back on. MicroPeak will blink
out the maximum height for the last flight. Turn MicroPeak
back off to conserve battery power.
-</dd></dl></div></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a id="_the_micropeak_usb_adapter"></a>Chapter 2. The MicroPeak USB adapter</h1></div></div></div><div class="figure"><a id="idm45474888707168"></a><p class="title"><strong>Figure 2.1. MicroPeak USB Adapter</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="MicroPeakUSB-2.0.jpg" align="middle" width="405" alt="MicroPeakUSB-2.0.jpg" /></div></div></div><br class="figure-break" /><p>MicroPeak stores barometric pressure information for the first
+</dd></dl></div></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a id="_the_micropeak_usb_adapter"></a>Chapter 2. The MicroPeak USB adapter</h1></div></div></div><div class="figure"><a id="idm98"></a><p class="title"><strong>Figure 2.1. MicroPeak USB Adapter</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="MicroPeakUSB-2.0.jpg" align="middle" width="405" alt="MicroPeakUSB-2.0.jpg" /></div></div></div><br class="figure-break" /><p>MicroPeak stores barometric pressure information for the first
48 seconds of the flight in on-board non-volatile memory. The
contents of this memory can be downloaded to a computer using
the MicroPeak USB adapter.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_installing_the_micropeak_software"></a>2.1. Installing the MicroPeak software</h2></div></div></div><p>The MicroPeak application runs on Linux, Mac OS X and
</li></ul></div><div class="informalfigure"><div class="mediaobject" align="center"><img src="micropeak-nofont.svg" align="middle" width="45" alt="micropeak-nofont.svg" /></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Click on the Download button at the top of the
window.
-</li></ul></div><div class="figure"><a id="idm45474891114272"></a><p class="title"><strong>Figure 2.2. MicroPeak Application</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-app.png" align="middle" width="405" alt="micropeak-app.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+</li></ul></div><div class="figure"><a id="idm128"></a><p class="title"><strong>Figure 2.2. MicroPeak Application</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-app.png" align="middle" width="405" alt="micropeak-app.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Select from the listed devices. There will probably
be only one.
-</li></ul></div><div class="figure"><a id="idm45474889649952"></a><p class="title"><strong>Figure 2.3. MicroPeak Device Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-device-dialog.png" align="middle" width="207" alt="micropeak-device-dialog.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+</li></ul></div><div class="figure"><a id="idm138"></a><p class="title"><strong>Figure 2.3. MicroPeak Device Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-device-dialog.png" align="middle" width="207" alt="micropeak-device-dialog.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
The application will now wait until it receives
valid data from the MicroPeak USB adapter.
-</li></ul></div><div class="figure"><a id="idm45474889692256"></a><p class="title"><strong>Figure 2.4. MicroPeak Download Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-download.png" align="middle" width="180" alt="micropeak-download.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+</li></ul></div><div class="figure"><a id="idm148"></a><p class="title"><strong>Figure 2.4. MicroPeak Download Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-download.png" align="middle" width="180" alt="micropeak-download.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
The MicroPeak USB adapter has a small
phototransistor under the hole in the center of the
box. Locate this, turn on the MicroPeak and place
should see the blue LED on the MicroPeak USB adapter
blinking in time with the orange LED on the
MicroPeak board itself.
-</li></ul></div><div class="figure"><a id="idm45474890780960"></a><p class="title"><strong>Figure 2.5. MicroPeak Downloading</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="MicroPeakUSB-2.0-inuse.jpg" align="middle" width="405" alt="MicroPeakUSB-2.0-inuse.jpg" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+</li></ul></div><div class="figure"><a id="idm158"></a><p class="title"><strong>Figure 2.5. MicroPeak Downloading</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="MicroPeakUSB-2.0-inuse.jpg" align="middle" width="405" alt="MicroPeakUSB-2.0-inuse.jpg" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
After the maximum flight height is reported,
MicroPeak will pause for a few seconds, blink the
LED four times rapidly and then send the data in one
present the data in a graph and offer to save the
data to a file. If not, you can power cycle the
MicroPeak board and try again.
-</li></ul></div><div class="figure"><a id="idm45474888934272"></a><p class="title"><strong>Figure 2.6. MicroPeak Save Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-save-dialog.png" align="middle" width="207" alt="micropeak-save-dialog.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+</li></ul></div><div class="figure"><a id="idm168"></a><p class="title"><strong>Figure 2.6. MicroPeak Save Dialog</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-save-dialog.png" align="middle" width="207" alt="micropeak-save-dialog.png" /></div></div></div><br class="figure-break" /><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
Once the data are saved, a graph will be displayed
with height, speed and acceleration values computed
from the recorded barometric pressure data. See
the flight log to a new file, Export the tabular data
(as seen in the Raw Data tab) to a file, change the
application Preferences, Close the current window or
-close all windows and Exit the application.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_micropeak_graphs"></a>2.3.1. MicroPeak Graphs</h3></div></div></div><div class="figure"><a id="idm45474890216176"></a><p class="title"><strong>Figure 2.7. MicroPeak Graph</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-graph.png" align="middle" width="405" alt="micropeak-graph.png" /></div></div></div><br class="figure-break" /><p>Under the Graph tab, the height, speed and acceleration values
+close all windows and Exit the application.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_micropeak_graphs"></a>2.3.1. MicroPeak Graphs</h3></div></div></div><div class="figure"><a id="idm186"></a><p class="title"><strong>Figure 2.7. MicroPeak Graph</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-graph.png" align="middle" width="405" alt="micropeak-graph.png" /></div></div></div><br class="figure-break" /><p>Under the Graph tab, the height, speed and acceleration values
are displayed together. You can zoom in on the graph by
clicking and dragging to sweep out an area of
interest. Right-click on the plot to bring up a menu that will
-let you save, copy or print the graph.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_micropeak_flight_statistics"></a>2.3.2. MicroPeak Flight Statistics</h3></div></div></div><div class="figure"><a id="idm45474890210176"></a><p class="title"><strong>Figure 2.8. MicroPeak Flight Statistics</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-statistics.png" align="middle" width="405" alt="micropeak-statistics.png" /></div></div></div><br class="figure-break" /><p>The Statistics tab presents overall data from
+let you save, copy or print the graph.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_micropeak_flight_statistics"></a>2.3.2. MicroPeak Flight Statistics</h3></div></div></div><div class="figure"><a id="idm196"></a><p class="title"><strong>Figure 2.8. MicroPeak Flight Statistics</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-statistics.png" align="middle" width="405" alt="micropeak-statistics.png" /></div></div></div><br class="figure-break" /><p>The Statistics tab presents overall data from
the flight. Note that the Maximum height value
is taken from the minumum pressure captured in
flight, and may be different from the apparant
twice as fast as the recorded values, or
because the true apogee occurred after the
on-board memory was full. Each value is
-presented in several units as appropriate.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_raw_flight_data"></a>2.3.3. Raw Flight Data</h3></div></div></div><div class="figure"><a id="idm45474888705120"></a><p class="title"><strong>Figure 2.9. MicroPeak Raw Flight Data</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-raw-data.png" align="middle" width="405" alt="micropeak-raw-data.png" /></div></div></div><br class="figure-break" /><p>A table consisting of the both the raw barometric pressure
-data and values computed from that for each recorded time.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_configuring_the_graph"></a>2.3.4. Configuring the Graph</h3></div></div></div><div class="figure"><a id="idm45474887946960"></a><p class="title"><strong>Figure 2.10. MicroPeak Graph Configuration</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-graph-configure.png" align="middle" width="405" alt="micropeak-graph-configure.png" /></div></div></div><br class="figure-break" /><p>This selects which graph elements to show, and lets you
-switch between metric and imperial units</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_setting_micropeak_preferences"></a>2.4. Setting MicroPeak Preferences</h2></div></div></div><div class="figure"><a id="idm45474888384656"></a><p class="title"><strong>Figure 2.11. MicroPeak Preferences</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-preferences.png" align="middle" width="162" alt="micropeak-preferences.png" /></div></div></div><br class="figure-break" /><p>The MicroPeak application has a few user settings which are
+presented in several units as appropriate.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_raw_flight_data"></a>2.3.3. Raw Flight Data</h3></div></div></div><div class="figure"><a id="idm206"></a><p class="title"><strong>Figure 2.9. MicroPeak Raw Flight Data</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-raw-data.png" align="middle" width="405" alt="micropeak-raw-data.png" /></div></div></div><br class="figure-break" /><p>A table consisting of the both the raw barometric pressure
+data and values computed from that for each recorded time.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="_configuring_the_graph"></a>2.3.4. Configuring the Graph</h3></div></div></div><div class="figure"><a id="idm216"></a><p class="title"><strong>Figure 2.10. MicroPeak Graph Configuration</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-graph-configure.png" align="middle" width="405" alt="micropeak-graph-configure.png" /></div></div></div><br class="figure-break" /><p>This selects which graph elements to show, and lets you
+switch between metric and imperial units</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="_setting_micropeak_preferences"></a>2.4. Setting MicroPeak Preferences</h2></div></div></div><div class="figure"><a id="idm226"></a><p class="title"><strong>Figure 2.11. MicroPeak Preferences</strong></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="micropeak-preferences.png" align="middle" width="162" alt="micropeak-preferences.png" /></div></div></div><br class="figure-break" /><p>The MicroPeak application has a few user settings which are
configured through the Preferences dialog, which can be
accessed from the File menu.</p><div class="variablelist"><dl class="variablelist"><dt><span class="term">
Log Directory
flight, MicroPeak also stores barometric information sampled
at regular intervals during the flight. This is the
information captured with the MicroPeak USB adapter. It can
-also be read from MicroPeak through any AVR programming tool.</p><div class="table"><a id="idm45474893118336"></a><p class="title"><strong>Table C.1. MicroPeak EEPROM Data Storage</strong></p><div class="table-contents"><table class="table" summary="MicroPeak EEPROM Data Storage" cellpadding="4px" style="border-collapse: collapse;border-top: 1px solid #78079a; border-bottom: 1px solid #78079a; border-left: 1px solid #78079a; border-right: 1px solid #78079a; "><colgroup><col class="col_1" /><col class="col_2" /><col class="col_3" /></colgroup><tbody><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Address</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Size (bytes)</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Description</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x000</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>4</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Average ground pressure (Pa)</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x004</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>4</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Minimum flight pressure (Pa)</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x008</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>2</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Number of in-flight samples</p></td></tr><tr><td style="border-right: 1px solid #78079a; " align="left" valign="top"><p>0x00a … 0x1fe</p></td><td style="border-right: 1px solid #78079a; " align="left" valign="top"><p>2</p></td><td style="" align="left" valign="top"><p>Instantaneous flight pressure (Pa) low 16 bits</p></td></tr></tbody></table></div></div><br class="table-break" /><p>All EEPROM data are stored least-significant byte first. The
+also be read from MicroPeak through any AVR programming tool.</p><div class="table"><a id="idm300"></a><p class="title"><strong>Table C.1. MicroPeak EEPROM Data Storage</strong></p><div class="table-contents"><table class="table" summary="MicroPeak EEPROM Data Storage" cellpadding="4px" style="border-collapse: collapse;border-top: 1px solid #78079a; border-bottom: 1px solid #78079a; border-left: 1px solid #78079a; border-right: 1px solid #78079a; "><colgroup><col class="col_1" /><col class="col_2" /><col class="col_3" /></colgroup><tbody><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Address</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Size (bytes)</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Description</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x000</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>4</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Average ground pressure (Pa)</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x004</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>4</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Minimum flight pressure (Pa)</p></td></tr><tr><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>0x008</p></td><td style="border-right: 1px solid #78079a; border-bottom: 1px solid #78079a; " align="left" valign="top"><p>2</p></td><td style="border-bottom: 1px solid #78079a; " align="left" valign="top"><p>Number of in-flight samples</p></td></tr><tr><td style="border-right: 1px solid #78079a; " align="left" valign="top"><p>0x00a … 0x1fe</p></td><td style="border-right: 1px solid #78079a; " align="left" valign="top"><p>2</p></td><td style="" align="left" valign="top"><p>Instantaneous flight pressure (Pa) low 16 bits</p></td></tr></tbody></table></div></div><br class="table-break" /><p>All EEPROM data are stored least-significant byte first. The
instantaneous flight pressure data are stored without the
upper 16 bits of data. The upper bits can be reconstructed
from the previous sample, assuming that pressure doesn’t