Idle | I | dit dit | Ready to accept commands over USB
+a long dissonant tone. Table 3.1. AltOS Modes Mode Name | Abbreviation | Beeps | Description | Startup | S | battery voltage in decivolts | Calibrating sensors, detecting orientation. | Idle | I | dit dit | Ready to accept commands over USB
or radio link. | Pad | P | dit dah dah dit | Waiting for launch. Not listening for commands. | Boost | B | dah dit dit dit | Accelerating upwards. | Fast | F | dit dit dah dit | Decelerating, but moving faster than 200m/s. | Coast | C | dah dit dah dit | Decelerating, moving slower than 200m/s | Drogue | D | dah dit dit | Descending after apogee. Above main height. | Main | M | dah dah | Descending. Below main height. | Landed | L | dit dah dit dit | Stable altitude for at least ten seconds. | Sensor error | X | dah dit dit dah | Error detected during sensor calibration. |
Hereâs a summary of all of the Pad and Idle mode
indications. In Idle mode, youâll hear one of these
just once after the two short dits indicating idle
mode. In Pad mode, after the dit dah dah dit
indicating Pad mode, youâll hear these once every five
-seconds. Table 3.2. Pad/Idle Indications Name | Beeps | Description |
---|
Neither | brap | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. | Storage Full | warble | On-board data logging storage is full. This will
+seconds. Table 3.2. Pad/Idle Indications Name | Beeps | Description |
---|
Neither | brap | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. | Storage Full | warble | On-board data logging storage is full. This will
not prevent the flight computer from safely
controlling the flight or transmitting telemetry
signals, but no record of the flight will be
@@ -166,7 +174,7 @@ primary igniter channels. |
Table 3.3. Pad Radio Indications Name | Beeps | Description |
---|
Neither | ½ second tone | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. |
During ascent, the tones will be muted to allow the
+igniter status once every five seconds. Table 3.3. Pad Radio Indications Name | Beeps | Description |
---|
Neither | ½ second tone | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. |
During ascent, the tones will be muted to allow the
telemetry data to consume the full radio bandwidth. During descent and after landing, a ½ second tone will
be transmitted every five seconds. This can be used to
find the rocket using RDF techniques when the signal
@@ -236,7 +244,7 @@ battery. TeleMetrum is a 1 inch by 2¾ inch circuit board. It was designed to
+the board. TeleMetrum is a 1 inch by 2¾ inch circuit board. It was designed to
fit inside coupler for 29mm air-frame tubing, but using it in a tube that
small in diameter may require some creativity in mounting and wiring
to succeed! The presence of an accelerometer means TeleMetrum should
@@ -257,7 +265,7 @@ screw terminals in the same position. Table 4.1. TeleMetrum Screw Terminals Terminal # | Terminal Name | Description |
---|
1 | Switch Output | Switch connection to flight computer | 2 | Switch Input | Switch connection to positive battery terminal | 3 | Main + | Main pyro channel common connection to battery | 4 | Main - | Main pyro channel connection to pyro circuit | 5 | Apogee + | Apogee pyro channel common connection to battery | 6 | Apogee - | Apogee pyro channel connection to pyro circuit |
4.2. Using a Separate Pyro Battery with TeleMetrumAs described above, using an external pyro battery involves
+the terminals are as follows: Table 4.1. TeleMetrum Screw Terminals Terminal # | Terminal Name | Description |
---|
1 | Switch Output | Switch connection to flight computer | 2 | Switch Input | Switch connection to positive battery terminal | 3 | Main + | Main pyro channel common connection to battery | 4 | Main - | Main pyro channel connection to pyro circuit | 5 | Apogee + | Apogee pyro channel common connection to battery | 6 | Apogee - | Apogee pyro channel connection to pyro circuit |
4.2. Using a Separate Pyro Battery with TeleMetrumAs described above, using an external pyro battery involves
connecting the negative battery terminal to the flight
computer ground, connecting the positive battery terminal to
one of the igniter leads and connecting the other igniter
@@ -273,7 +281,7 @@ connections, one to the positive battery terminal, one to
the flight computer positive input and one to ground. The positive battery terminal is available on screw terminal
2, the positive flight computer input is on terminal 1. To
hook a lead to ground, solder a piece of wire, 24 to 28
-gauge stranded, to the GND hole just above terminal 1. TeleMini v3 is 0.5 inches by 1.67 inches. It was
+gauge stranded, to the GND hole just above terminal 1. TeleMini v3 is 0.5 inches by 1.67 inches. It was
designed to fit inside an 18mm air-frame tube, but using it in
a tube that small in diameter may require some creativity in
mounting and wiring to succeed! Since there is no
@@ -291,7 +299,7 @@ screw terminals are located in the middle of the board
for the power switch. Using the
picture above and starting from the top for the pyro terminals
and from the left for the power switch terminals, the
-connections are as follows: Table 5.1. TeleMini v3 Screw Terminals Terminal # | Terminal Name | Description |
---|
1 | Apogee - | Apogee pyro channel connection to pyro circuit | 2 | Apogee | Apogee pyro channel common connection to battery | 3 | Main - | Main pyro channel connection to pyro circuit | 4 | Main | Main pyro channel common connection to battery | Left | Switch Output | Switch connection to flight computer | Right | Switch Input | Switch connection to positive battery terminal |
5.2. Using a Separate Pyro Battery with TeleMini v3As described above, using an external pyro battery involves
+connections are as follows: Table 5.1. TeleMini v3 Screw Terminals Terminal # | Terminal Name | Description |
---|
1 | Apogee - | Apogee pyro channel connection to pyro circuit | 2 | Apogee | Apogee pyro channel common connection to battery | 3 | Main - | Main pyro channel connection to pyro circuit | 4 | Main | Main pyro channel common connection to battery | Left | Switch Output | Switch connection to flight computer | Right | Switch Input | Switch connection to positive battery terminal |
5.2. Using a Separate Pyro Battery with TeleMini v3As described above, using an external pyro battery involves
connecting the negative battery terminal to the flight
computer ground, connecting the positive battery terminal to
one of the igniter leads and connecting the other igniter
@@ -314,7 +322,7 @@ the left power switch wire. Hook a lead to either of the
mounting holes for a ground connection. TeleMini v1 is the earlier version of this product. It
has a lower-power radio, less storage, no beeper and
soldered-in wires instead of screw terminals for the
-power switch. EasyMini is built on a 0.8 inch by 1½ inch circuit board. Itâs
+power switch. EasyMini is built on a 0.8 inch by 1½ inch circuit board. Itâs
designed to fit in a 24mm coupler tube. You usually donât need to configure EasyMini at all; itâs set
up to do dual-deployment with an event at apogee to separate
the airframe and deploy a drogue and another event at 250m
@@ -325,7 +333,7 @@ board. Using the picture
above, the top four have connections for the main pyro
circuit and an external battery and the bottom four have
connections for the apogee pyro circuit and the power
-switch. Counting from the left, the connections are as follows: Table 6.1. EasyMini Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Main - | Main pyro channel connection to pyro circuit | Top 2 | Main | Main pyro channel common connection to battery | Top 3 | Battery | Positive external battery terminal | Top 4 | Battery - | Negative external battery terminal | Bottom 1 | Apogee - | Apogee pyro channel connection to pyro circuit | Bottom 2 | Apogee | Apogee pyro channel common connection to battery | Bottom 3 | Switch Output | Switch connection to flight computer | Bottom 4 | Switch Input | Switch connection to positive battery terminal |
6.2. Connecting A Battery To EasyMiniThere are two possible battery connections on
+switch. Counting from the left, the connections are as follows: Table 6.1. EasyMini Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Main - | Main pyro channel connection to pyro circuit | Top 2 | Main | Main pyro channel common connection to battery | Top 3 | Battery | Positive external battery terminal | Top 4 | Battery - | Negative external battery terminal | Bottom 1 | Apogee - | Apogee pyro channel connection to pyro circuit | Bottom 2 | Apogee | Apogee pyro channel common connection to battery | Bottom 3 | Switch Output | Switch connection to flight computer | Bottom 4 | Switch Input | Switch connection to positive battery terminal |
6.2. Connecting A Battery To EasyMiniThere are two possible battery connections on
EasyMini. You can use either method; both feed
through the power switch terminals. One battery connection is the standard Altus Metrum
white JST plug. This mates with single-cell Lithium
@@ -353,7 +361,7 @@ the flight computer positive input and one to ground. Use
the negative external battery connection, top terminal 4 for
ground. The positive battery terminal is available on bottom
terminal 4, the positive flight computer input is on the
-bottom terminal 3. TeleMega is a 1¼ inch by 3¼ inch circuit board. It was
+bottom terminal 3. TeleMega is a 1¼ inch by 3¼ inch circuit board. It was
designed to easily fit in a 38mm coupler. Like TeleMetrum,
TeleMega has an accelerometer and so it must be mounted so that
the board is aligned with the flight axis. It can be mounted
@@ -368,7 +376,7 @@ Radio switched from cc1120 to cc1200.
they do mean that the device needs different firmware to
operate correctly, so make sure you load the right firmware
when reflashing the device. 7.1. TeleMega Screw TerminalsTeleMega has two sets of nine screw terminals on the end of
-the board opposite the telemetry antenna. They are as follows: Table 7.1. TeleMega Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Switch Input | Switch connection to positive battery terminal | Top 2 | Switch Output | Switch connection to flight computer | Top 3 | GND | Ground connection for use with external active switch | Top 4 | Main - | Main pyro channel connection to pyro circuit | Top 5 | Main | Main pyro channel common connection to battery | Top 6 | Apogee - | Apogee pyro channel connection to pyro circuit | Top 7 | Apogee | Apogee pyro channel common connection to battery | Top 8 | D - | D pyro channel connection to pyro circuit | Top 9 | D | D pyro channel common connection to battery | Bottom 1 | GND | Ground connection for negative pyro battery terminal | Bottom 2 | Pyro | Positive pyro battery terminal | Bottom 3 | Lipo | Power switch output. Use to connect main battery to pyro battery input | Bottom 4 | A - | A pyro channel connection to pyro circuit | Bottom 5 | A | A pyro channel common connection to battery | Bottom 6 | B - | B pyro channel connection to pyro circuit | Bottom 7 | B | B pyro channel common connection to battery | Bottom 8 | C - | C pyro channel connection to pyro circuit | Bottom 9 | C | C pyro channel common connection to battery |
7.2. Using a Separate Pyro Battery with TeleMegaTeleMega provides explicit support for an external pyro
+the board opposite the telemetry antenna. They are as follows: Table 7.1. TeleMega Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Switch Input | Switch connection to positive battery terminal | Top 2 | Switch Output | Switch connection to flight computer | Top 3 | GND | Ground connection for use with external active switch | Top 4 | Main - | Main pyro channel connection to pyro circuit | Top 5 | Main | Main pyro channel common connection to battery | Top 6 | Apogee - | Apogee pyro channel connection to pyro circuit | Top 7 | Apogee | Apogee pyro channel common connection to battery | Top 8 | D - | D pyro channel connection to pyro circuit | Top 9 | D | D pyro channel common connection to battery | Bottom 1 | GND | Ground connection for negative pyro battery terminal | Bottom 2 | Pyro | Positive pyro battery terminal | Bottom 3 | Lipo | Power switch output. Use to connect main battery to pyro battery input | Bottom 4 | A - | A pyro channel connection to pyro circuit | Bottom 5 | A | A pyro channel common connection to battery | Bottom 6 | B - | B pyro channel connection to pyro circuit | Bottom 7 | B | B pyro channel common connection to battery | Bottom 8 | C - | C pyro channel connection to pyro circuit | Bottom 9 | C | C pyro channel common connection to battery |
7.2. Using a Separate Pyro Battery with TeleMegaTeleMega provides explicit support for an external pyro
battery. All that is required is to remove the jumper
between the lipo terminal (Bottom 3) and the pyro terminal
(Bottom 2). Then hook the negative pyro battery terminal to ground
@@ -384,12 +392,12 @@ wire from the Lipo terminal (Bottom 3) to the Pyro terminal
connections, one to the positive battery terminal, one to
the flight computer positive input and one to ground. The positive battery terminal is available on Top terminal
1, the positive flight computer input is on Top terminal
-2. Ground is on Top terminal 3. EasyMega is a 1¼ inch by 2¼ inch circuit board. It was
+2. Ground is on Top terminal 3. EasyMega is a 1¼ inch by 2¼ inch circuit board. It was
designed to easily fit in a 38mm coupler. Like TeleMetrum,
EasyMega has an accelerometer and so it must be mounted so that
the board is aligned with the flight axis. It can be mounted
either antenna up or down. 8.1. EasyMega Screw TerminalsEasyMega has two sets of nine screw terminals on the end of
-the board opposite the telemetry antenna. They are as follows: Table 8.1. EasyMega Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Switch Input | Switch connection to positive battery terminal | Top 2 | Switch Output | Switch connection to flight computer | Top 3 | GND | Ground connection for use with external active switch | Top 4 | Main - | Main pyro channel connection to pyro circuit | Top 5 | Main | Main pyro channel common connection to battery | Top 6 | Apogee - | Apogee pyro channel connection to pyro circuit | Top 7 | Apogee | Apogee pyro channel common connection to battery | Top 8 | D - | D pyro channel connection to pyro circuit | Top 9 | D | D pyro channel common connection to battery | Bottom 1 | GND | Ground connection for negative pyro battery terminal | Bottom 2 | Pyro | Positive pyro battery terminal | Bottom 3 | Lipo | Power switch output. Use to connect main battery to pyro battery input | Bottom 4 | A - | A pyro channel connection to pyro circuit | Bottom 5 | A | A pyro channel common connection to battery | Bottom 6 | B - | B pyro channel connection to pyro circuit | Bottom 7 | B | B pyro channel common connection to battery | Bottom 8 | C - | C pyro channel connection to pyro circuit | Bottom 9 | C | C pyro channel common connection to battery |
8.2. Using a Separate Pyro Battery with EasyMegaEasyMega provides explicit support for an external pyro
+the board opposite the telemetry antenna. They are as follows: Table 8.1. EasyMega Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Switch Input | Switch connection to positive battery terminal | Top 2 | Switch Output | Switch connection to flight computer | Top 3 | GND | Ground connection for use with external active switch | Top 4 | Main - | Main pyro channel connection to pyro circuit | Top 5 | Main | Main pyro channel common connection to battery | Top 6 | Apogee - | Apogee pyro channel connection to pyro circuit | Top 7 | Apogee | Apogee pyro channel common connection to battery | Top 8 | D - | D pyro channel connection to pyro circuit | Top 9 | D | D pyro channel common connection to battery | Bottom 1 | GND | Ground connection for negative pyro battery terminal | Bottom 2 | Pyro | Positive pyro battery terminal | Bottom 3 | Lipo | Power switch output. Use to connect main battery to pyro battery input | Bottom 4 | A - | A pyro channel connection to pyro circuit | Bottom 5 | A | A pyro channel common connection to battery | Bottom 6 | B - | B pyro channel connection to pyro circuit | Bottom 7 | B | B pyro channel common connection to battery | Bottom 8 | C - | C pyro channel connection to pyro circuit | Bottom 9 | C | C pyro channel common connection to battery |
8.2. Using a Separate Pyro Battery with EasyMegaEasyMega provides explicit support for an external pyro
battery. All that is required is to remove the jumper
between the lipo terminal (Bottom 3) and the pyro terminal
(Bottom 2). Then hook the negative pyro battery terminal to ground
@@ -558,7 +566,7 @@ feel free to dive in and help! Or let us know what
youâd like to see that we arenât already working on,
and maybe weâll get excited about it too⦠Watch our web site for
more news and information as our family of products
-evolves! The AltosUI program provides a graphical user interface for
+evolves! The AltosUI program provides a graphical user interface for
interacting with the Altus Metrum product family. AltosUI can
monitor telemetry data, configure devices and many other
tasks. The primary interface window provides a selection of
@@ -568,7 +576,7 @@ the tasks provided from the top-level toolbar. All telemetry data received are automatically recorded
+device. All telemetry data received are automatically recorded
in suitable log files. The name of the files includes
the current date and rocket serial and flight numbers. The radio frequency being monitored by the TeleDongle
device is displayed at the top of the window. You can
@@ -615,7 +623,7 @@ automatically switches to display data relevant to the
current state of the flight. You can select other tabs
at any time. The final table tab displays all of the
raw telemetry values in one place in a
-spreadsheet-like format. The Launch Pad tab shows information used to decide when the
+spreadsheet-like format. The Launch Pad tab shows information used to decide when the
rocket is ready for flight. The first elements include red/green
indicators, if any of these is red, youâll want to evaluate
whether the rocket is ready to launch: -
@@ -673,7 +681,7 @@ GPS receiver has reliable reception from the
satellites.
The Launchpad tab also shows the computed launch pad
position and altitude, averaging many reported
-positions to improve the accuracy of the fix. This tab is shown during Boost, Fast and Coast
+positions to improve the accuracy of the fix. This tab is shown during Boost, Fast and Coast
phases. The information displayed here helps monitor the
rocket as it heads towards apogee. The height, speed, acceleration and tilt are shown along
with the maximum values for each of them. This allows you to
@@ -684,7 +692,7 @@ may not get updated as the GPS receiver loses position
fix. Once the rocket starts coasting, the receiver should
start reporting position again. Finally, the current igniter voltages are reported as in the
Launch Pad tab. This can help diagnose deployment failures
-caused by wiring which comes loose under high acceleration. Once the rocket has reached apogee and (we hope)
+caused by wiring which comes loose under high acceleration. Once the rocket has reached apogee and (we hope)
activated the apogee charge, attention switches to
tracking the rocket on the way back to the ground, and
for dual-deploy flights, waiting for the main charge
@@ -710,7 +718,7 @@ see what the status of the apogee charge is. Note
that some commercial e-matches are designed to retain
continuity even after being fired, and will continue
to show as green or return from red to green after
-firing. Once the rocket is on the ground, attention switches
+firing. Once the rocket is on the ground, attention switches
to recovery. While the radio signal is often lost once
the rocket is on the ground, the last reported GPS
position is generally within a short distance of the
@@ -732,11 +740,11 @@ depends on the quality of your radio link and how many
packets were received. Recovering the on-board data
after flight may yield more precise results. To get more detailed information about the flight, you
can click on the Graph Flight button which will
-bring up a graph window for the current flight. The table view shows all of the data available from the
+bring up a graph window for the current flight. The table view shows all of the data available from the
flight computer. Probably the most useful data on
this tab is the detailed GPS information, which includes
horizontal dilution of precision information, and
-information about the signal being received from the satellites. When the TeleMetrum has a GPS fix, the Site Map tab
+information about the signal being received from the satellites. When the TeleMetrum has a GPS fix, the Site Map tab
will map the rocketâs position to make it easier for
you to locate the rocket, both while it is in the air,
and when it has landed. The rocketâs state is
@@ -755,7 +763,7 @@ units will be shown at the start of the line. Images are fetched automatic
Static API, and cached on disk for reuse. If map
images cannot be downloaded, the rocketâs path will be
traced on a dark gray background instead. You can pre-load images for your favorite launch sites
-before you leave home; check out Section 11.12, âLoad Mapsâ. TeleMega includes four additional programmable pyro
channels. The Ignitor tab shows whether each of them has
continuity. If an ignitor has a low resistance, then the
voltage measured here will be close to the pyro battery
@@ -800,7 +808,7 @@ record file, either a .telem file recording telemetry data or a
flash memory. Note that telemetry files will generally produce poor graphs
due to the lower sampling rate and missed telemetry packets.
Use saved flight data in .eeprom files for graphing where possible. Once a flight record is selected, a window with multiple tabs is
-opened. By default, the graph contains acceleration (blue),
+opened. By default, the graph contains acceleration (blue),
velocity (green) and altitude (red). The graph can be zoomed into a particular area by
clicking and dragging down and to the right. Once
zoomed, the graph can be reset by clicking and
@@ -808,7 +816,7 @@ dragging up and to the left. Holding down control and
clicking and dragging allows the graph to be panned.
The right mouse button causes a pop-up menu to be
displayed, giving you the option save or print the
-plot. This selects which graph elements to show, and, at the
+plot. This selects which graph elements to show, and, at the
very bottom. It also lets you configure how
the graph is drawn: -
Whether to use metric or imperial units
@@ -829,7 +837,7 @@ descent. Flight computers without
accelerometers always compute both speed and
acceleration from barometric data. A larger
value smooths the data more.
-
11.4.3. Flight StatisticsShows overall data computed from the flight. Shows a satellite image of the flight area overlaid
+ 11.4.3. Flight StatisticsShows overall data computed from the flight. Shows a satellite image of the flight area overlaid
with the path of the flight. The red concentric
circles mark the launch pad, the black concentric
circles mark the landing location. This tool takes the raw data files and makes them
@@ -856,7 +864,7 @@ standard units, with the barometric data reported in
both pressure, altitude and height above pad units. 11.5.2. Keyhole Markup Language (for Google Earth)This is the format used by Google Earth to provide an
overlay within that application. With this, you can
use Google Earth to see the whole flight path
-in 3D. 11.6. Configure AltimeterSelect this button and then select either an altimeter or
+in 3D. 11.6. Configure AltimeterSelect this button and then select either an altimeter or
TeleDongle Device from the list provided. Selecting a TeleDongle
device will use the radio link to configure a remote
altimeter. The first few lines of the dialog provide information about the
@@ -1020,7 +1028,7 @@ flight computer with the antenna end, or end opposite
the screw terminals, in the case of EasyMega, first up
and then down. When the calibration is complete, return to the
Configure Altimeter window and save the new
-calibration values. 11.6.19. Configure Pyro ChannelsThis opens a separate window to configure the
+calibration values. 11.6.19. Configure Pyro ChannelsThis opens a separate window to configure the
additional pyro channels available on TeleMega
and EasyMega. One column is presented for
each channel. Each row represents a single
@@ -1040,43 +1048,38 @@ channels, you can save the pyro configuration
along with the rest of the flight computer
configuration by pressing the Save button in
the main Configure Flight Computer window. -
-Acceleration
-
-
-Select a value, and then choose
-whether acceleration should be above or below
-that value. Acceleration is positive upwards,
-so accelerating towards the ground would
-produce negative numbers. Acceleration during
-descent is noisy and inaccurate, so be careful
-when using it during these phases of the
-flight.
+Vertical Acceleration
+
-
+Select a value, and then choose whether
+acceleration away from the ground should be above or below that
+value. Acceleration is positive upwards, so accelerating towards the
+ground would produce negative numbers. Acceleration during descent is
+noisy and inaccurate, so be careful when using it during these phases
+of the flight.
-
-Vertical speed
+Ascent rate
-
-Select a value, and then
-choose whether vertical speed should be above
-or below that value. Speed is positive
-upwards, so moving towards the ground would
-produce negative numbers. Speed during descent
-is a bit noisy and so be careful when using it
+Select a value, and then choose whether ascent rate
+should be above or below that value. Ascent rate is positive upwards,
+so moving towards the ground would produce negative numbers. Ascent
+rate during descent is a bit noisy and so be careful when using it
during these phases of the flight.
-
-Height
+Height above pad
-
-Select a value, and then choose
-whether the height above the launch pad should
-be above or below that value.
+Select a value, and then choose whether the height
+above the launch pad should be above or below that value.
-
Orientation
-
-TeleMega and EasyMega contain a
-3-axis gyroscope and accelerometer which is
-used to measure the current angle. Note that
-this angle is not the change in angle from the
-launch pad, but rather absolute relative to
-gravity; the 3-axis accelerometer is used to
-compute the angle of the rocket on the launch
-pad and initialize the system.
+TeleMega and EasyMega contain a 3-axis gyroscope and
+accelerometer which is used to compute the orientation of the
+rocket. A record of orientations over the last 0.64 seconds is kept
+and the largest value within this period is compared with the
+specified value. Note that the tilt angle is not the change in angle
+from the launch pad, but rather absolute relative to gravityâthe
+3-axis accelerometer is used to compute the angle of the rocket on the
+launch pad and initialize the system.
NoteBecause this value is computed by integrating
rate gyros, it gets progressively less
accurate as the flight goes on. It should have
@@ -1097,13 +1100,15 @@ time.
Ascending
-A simple test saying whether the rocket is going up or
-not. This is exactly equivalent to testing whether the speed is > 0.
+A deprecated configuration value which was the same as
+setting Ascent rate > 0. Existing configurations using this will be
+cleared and must be reconfigured by the user.
Descending
-A simple test saying whether the rocket is going down or
-not. This is exactly equivalent to testing whether the speed is < 0.
+A deprecated configuration value which was the same as
+setting Ascent rate < 0. Existing configurations using this will be
+cleared and must be reconfigured by the user.
After Motor
@@ -1114,9 +1119,12 @@ launches.
Delay
-This value doesnât perform any checks, instead it inserts a
-delay between the time when the other parameters become true and when
-the pyro channel is activated.
+Once the other parameters all become true, a timer is
+started for the specified amount of time. While the timer is running,
+the other parameters are checked repeatedly and if any of them become
+false, then the pyro channel is disabled and will not fire. If the
+timer expires and all of the other parameters have remained true for
+the entire time, then the pyro channel is fired.
Flight State
@@ -1124,22 +1132,36 @@ The flight software tracks the flight
through a sequence of states:
-
Boost. The motor has lit and the rocket is
-accelerating upwards.
+accelerating upwards. Ascent rate will be greater than zero.
+Vertical acceleration will be greater than zero.
-
Fast. The motor has burned out and the
rocket is decelerating, but it is going
-faster than 200m/s.
+faster than 200m/s. Ascent rate will be greater than zero. Vertical
+acceleration will be less than zero.
-
Coast. The rocket is still moving upwards
-and decelerating, but the speed is less
-than 200m/s.
+and decelerating, but the Ascent rate is less
+than 200m/s. Ascent rate will greater than zero. Vertical
+acceleration will be less than zero.
-
Drogue. The rocket has reached apogee and
is heading back down, but is above the
-configured Main altitude.
+configured Main altitude. Ascent rate will be less than zero during
+this state. Vertical acceleration will be negative until the rocket
+reaches a terminal descent rate, at which point Vertical
+acceleration will be zero. Both Ascent rate and Vertical
+acceleration are very noisy in this state, so be careful when
+trying to use them to control pyro channels.
-
Main. The rocket is still descending, and
-is below the Main altitude
+is below the Main altitude. Ascent rate will be less than zero
+during this state. Vertical acceleration may be briefly less than
+zero as the rocket slows from drogue descent to main descent, but
+it will settle down to a zero value once the rocket has reached the
+terminal velocity under the main chute. Ascent rate and Vertical
+acceleration should be much less noisy once the main chute has
+deployed.
-
Landed. The rocket is no longer moving.
You can select a state to limit when the pyro channel may activate;
@@ -1147,7 +1169,7 @@ note that the check is based on when the rocket transitions When a motor burns out, the rocket enters either Fast or Coast state
(depending on how fast it is moving). If the computer detects upwards
-acceleration again, it will move back to Boost state. This button presents a dialog so that you can
+acceleration again, it will move back to Boost state. This button presents a dialog so that you can
configure the AltosUI global settings. AltosUI provides voice announcements during
flight so that you can keep your eyes on the
sky and still get information about the
@@ -1212,7 +1234,7 @@ as you like, or even reconfigure the default
set. Changing this list does not affect the
frequency settings of any devices, it only
changes the set of frequencies shown in the
-menus. 11.8. Configure GroundstationSelect this button and then select a TeleDongle or
+menus. 11.8. Configure GroundstationSelect this button and then select a TeleDongle or
TeleBT Device from the list provided. The first few lines of the dialog provide information
about the connected device, including the product
name, software version and hardware serial
@@ -1267,7 +1289,7 @@ EasyMini and TeleDongle v3 are all
programmed directly
over USB (self programming). Please read
the directions for flashing devices in
-Appendix C, Updating Device Firmware. This activates the igniter circuits in the flight
computer to help test recovery systems
deployment.
Because this command can operate over the
@@ -1283,15 +1305,19 @@ button. The word Arm is replaced by a cou
timer indicating that you have 10 seconds to press the
Fire button or the system will deactivate, at which
point you start over again at selecting the desired
-igniter. This listens for telemetry packets on all of the
+igniter. This listens for telemetry packets on all of the
configured frequencies, displaying information about
each device it receives a packet from. You can select
which of the baud rates and telemetry formats should
be tried; by default, it only listens at 38400 baud
with the standard telemetry format used in v1.0 and
-later firmware. Before heading out to a new launch site, you can use
+later firmware. Before heading out to a new launch site, you can use
this to load satellite images in case you donât have
-internet connectivity at the site. Thereâs a drop-down menu of launch sites we know
+internet connectivity at the site. Try not to wait
+until the last minute, though, particularly if youâre
+heading to a major launch. If too many people are
+all trying to download map data at once, Google may
+limit access until the next day. Thereâs a drop-down menu of launch sites we know
about; if your favorites arenât there, please let us
know the lat/lon and name of the site. The contents of
this list are actually downloaded from our server at
@@ -1337,7 +1363,7 @@ Google Maps; note that Google limits how many images
you can fetch at once, so if you load more than one
launch site, you may get some gray areas in the map
which indicate that Google is tired of sending data to
-you. Try again later. This brings up a dialog similar to the Monitor Flight
+you. Try again later. This brings up a dialog similar to the Monitor Flight
UI, except it works with the altimeter in âidleâ mode
by sending query commands to discover the current
state rather than listening for telemetry
@@ -1950,7 +1976,7 @@ same time while keeping the identify of each one separate in
the receiver. By default, the SSID is set to the last digit of
the device serial number. The APRS packet format includes a comment field that
can have arbitrary text in it. AltOS uses this to send
-status information as shown in the following table. Table A.1. Altus Metrum APRS Comments Field | Example | Description |
---|
1 | L | GPS Status U for unlocked, L for locked | 2 | 6 | Number of Satellites in View | 3 | B4.0 | Altimeter Battery Voltage | 4 | A3.7 | Apogee Igniter Voltage | 5 | M3.7 | Main Igniter Voltage | 6 | 1286 | Device Serial Number | 4 | 1286 | Device Serial Number |
Hereâs an example of an APRS comment showing GPS lock with 6
+status information as shown in the following table. Table A.1. Altus Metrum APRS Comments Field | Example | Description |
---|
1 | L | GPS Status U for unlocked, L for locked | 2 | 6 | Number of Satellites in View | 3 | B4.0 | Altimeter Battery Voltage | 4 | A3.7 | Apogee Igniter Voltage | 5 | M3.7 | Main Igniter Voltage | 6 | 1286 | Device Serial Number | 4 | 1286 | Device Serial Number |
Hereâs an example of an APRS comment showing GPS lock with 6
satellites in view, a primary battery at 4.0V, and
apogee and main igniters both at 3.7V from device 1286. L6 B4.0 A3.7 M3.7 1286 Hereâs an example of an APRS comment showing GPS lock with 6
satellites in view and a primary battery at 4.0V from device 1876. L6 B4.0 1876 Make sure your primary battery is above 3.8V
@@ -2303,7 +2329,7 @@ descent, except for TeleMini v1.0, which records ascent at 10 samples
per second and descent at 1 sample per second.
Data are logged to
an on-board flash memory part, which can be partitioned into
-several equal-sized blocks, one for each flight. Table D.1. Data Storage on Altus Metrum altimeters Device | Bytes per Sample | Total Storage | Minutes at Full Rate |
---|
TeleMetrum v1.0 | 8 | 1MB | 20 | TeleMetrum v1.1 v1.2 | 8 | 2MB | 40 | TeleMetrum v2.0 | 16 | 8MB | 80 | TeleMini v1.0 | 2 | 5kB | 4 | TeleMini v3.0 | 16 | 512kB | 5 | EasyMini | 16 | 1MB | 10 | TeleMega | 32 | 8MB | 40 | EasyMega | 32 | 8MB | 40 |
The on-board flash is partitioned into separate flight logs,
+several equal-sized blocks, one for each flight. Table D.1. Data Storage on Altus Metrum altimeters Device | Bytes per Sample | Total Storage | Minutes at Full Rate |
---|
TeleMetrum v1.0 | 8 | 1MB | 20 | TeleMetrum v1.1 v1.2 | 8 | 2MB | 40 | TeleMetrum v2.0 | 16 | 8MB | 80 | TeleMini v1.0 | 2 | 5kB | 4 | TeleMini v3.0 | 16 | 512kB | 5 | EasyMini | 16 | 1MB | 10 | TeleMega | 32 | 8MB | 40 | EasyMega | 32 | 8MB | 40 |
The on-board flash is partitioned into separate flight logs,
each of a fixed maximum size. Increase the maximum size of
each log and you reduce the number of flights that can be
stored. Decrease the size and you can store more flights. Configuration data is also stored in the flash memory on
@@ -2332,7 +2358,7 @@ flight data, so be sure to download flight data and erase it
from the flight computer before it fills up. The flight
computer will still successfully control the flight even if it
cannot log data, so the only thing you will lose is the data. Appendix E. Altus Metrum Hardware SpecificationsHereâs the full set of Altus Metrum products, both in
-production and retired. Table E.1. Altus Metrum Flight Computer Electronics Device | Barometer | Z-axis accel | GPS | 3D sensors | Storage | RF Output | Battery |
---|
TeleMetrum v1.0 | MP3H6115 10km (33k') | MMA2202 50g | SkyTraq | - | 1MB | 10mW | 3.7V | TeleMetrum v1.1 | MP3H6115 10km (33k') | MMA2202 50g | SkyTraq | - | 2MB | 10mW | 3.7V | TeleMetrum v1.2 | MP3H6115 10km (33k') | ADXL78 70g | SkyTraq | - | 2MB | 10mW | 3.7V | TeleMetrum v2.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | - | 8MB | 40mW | 3.7V | TeleMini v1.0 | MP3H6115 10km (33k') | - | - | - | 5kB | 10mW | 3.7V | TeleMini v3.0 | MS5607 30km (100k') | - | - | - | 512kB | 40mW | 3.7V | EasyMini v1.0 | MS5607 30km (100k') | - | - | - | 1MB | - | 3.7-12V | TeleMega v1.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | MPU6000 HMC5883 | 8MB | 40mW | 3.7V | TeleMega v2.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | MPU6000 HMC5883 | 8MB | 40mW | 3.7V | EasyMega v1.0 | MS5607 30km (100k') | MMA6555 102g | - | MPU6000 HMC5883 | 8MB | - | 3.7V |
Table E.2. Altus Metrum Flight Computer Mechanical Components Device | Connectors | Screw Terminals | Width | Length | Tube Size |
---|
TeleMetrum | Antenna Debug Companion USB Battery | Apogee pyro Main pyro Switch | 1 inch (2.54cm) | 2 ¾ inch (6.99cm) | 29mm coupler | TeleMini v1.0 | Antenna Debug Battery | Apogee pyro Main pyro | ½ inch (1.27cm) | 1½ inch (3.81cm) | 18mm coupler | TeleMini v2.0 | Antenna Debug USB Battery | Apogee pyro Main pyro Battery Switch | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler | EasyMini | Debug USB Battery | Apogee pyro Main pyro Battery | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler | TeleMega | Antenna Debug Companion USB Battery | Apogee pyro Main pyro Pyro A-D Switch Pyro battery | 1¼ inch (3.18cm) | 3¼ inch (8.26cm) | 38mm coupler | EasyMega | Debug Companion USB Battery | Apogee pyro Main pyro Pyro A-D Switch Pyro battery | 1¼ inch (3.18cm) | 2¼ inch (5.62cm) | 38mm coupler |
Appendix F. Release NotesF.1. Release Notes for Version 1.8.5Version 1.8.5 includes fixes to the ground software support
+production and retired. Table E.1. Altus Metrum Flight Computer Electronics Device | Barometer | Z-axis accel | GPS | 3D sensors | Storage | RF Output | Battery |
---|
TeleMetrum v1.0 | MP3H6115 10km (33k') | MMA2202 50g | SkyTraq | - | 1MB | 10mW | 3.7V | TeleMetrum v1.1 | MP3H6115 10km (33k') | MMA2202 50g | SkyTraq | - | 2MB | 10mW | 3.7V | TeleMetrum v1.2 | MP3H6115 10km (33k') | ADXL78 70g | SkyTraq | - | 2MB | 10mW | 3.7V | TeleMetrum v2.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | - | 8MB | 40mW | 3.7V | TeleMini v1.0 | MP3H6115 10km (33k') | - | - | - | 5kB | 10mW | 3.7V | TeleMini v3.0 | MS5607 30km (100k') | - | - | - | 512kB | 40mW | 3.7V | EasyMini v1.0 | MS5607 30km (100k') | - | - | - | 1MB | - | 3.7-12V | TeleMega v1.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | MPU6000 HMC5883 | 8MB | 40mW | 3.7V | TeleMega v2.0 | MS5607 30km (100k') | MMA6555 102g | uBlox Max-7Q | MPU6000 HMC5883 | 8MB | 40mW | 3.7V | EasyMega v1.0 | MS5607 30km (100k') | MMA6555 102g | - | MPU6000 HMC5883 | 8MB | - | 3.7V |
Table E.2. Altus Metrum Flight Computer Mechanical Components Device | Connectors | Screw Terminals | Width | Length | Tube Size |
---|
TeleMetrum | Antenna Debug Companion USB Battery | Apogee pyro Main pyro Switch | 1 inch (2.54cm) | 2 ¾ inch (6.99cm) | 29mm coupler | TeleMini v1.0 | Antenna Debug Battery | Apogee pyro Main pyro | ½ inch (1.27cm) | 1½ inch (3.81cm) | 18mm coupler | TeleMini v2.0 | Antenna Debug USB Battery | Apogee pyro Main pyro Battery Switch | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler | EasyMini | Debug USB Battery | Apogee pyro Main pyro Battery | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler | TeleMega | Antenna Debug Companion USB Battery | Apogee pyro Main pyro Pyro A-D Switch Pyro battery | 1¼ inch (3.18cm) | 3¼ inch (8.26cm) | 38mm coupler | EasyMega | Debug Companion USB Battery | Apogee pyro Main pyro Pyro A-D Switch Pyro battery | 1¼ inch (3.18cm) | 2¼ inch (5.62cm) | 38mm coupler |
Appendix F. Release NotesF.1. Release Notes for Version 1.8.5Version 1.8.5 includes fixes to the ground software support
for TeleBT v4, along with a few other minor updates. -
Fix startup beeps that indicate sensor failures.
Chapter 1. Introduction and OverviewWelcome to the Altus Metrum community! Our circuits and software reflect
+NAR #88757, TRA #12200 Chapter 1. Introduction and OverviewWelcome to the Altus Metrum community! Our circuits and software reflect
our passion for both hobby rocketry and Free Software. We hope their
capabilities and performance will delight you in every way, but by
releasing all of our hardware and software designs under open licenses,
we also hope to empower you to take as active a role in our collective
-future as you wish! The first device created for our community was TeleMetrum, a dual
+future as you wish! Our goal is to include in this document all of the information required
+to successfully configure and use Altus Metrum products. But
+documentation is a lot like software in that it can contain "bugs",
+and can probably always be improved! If you have questions that
+arenât 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
+https://lists.gag.com/mailman/listinfo/altusmetrum. Thereâs a lot
+of useful information in the mailing list archives! The first device created for our community was TeleMetrum, a dual
deploy altimeter with fully integrated GPS and radio telemetry
as standard features, and a âcompanion interfaceâ that will
support optional capabilities in the future. The latest version
@@ -105,12 +113,12 @@ beeping
that accompanies each mode. In the description of the
beeping pattern, âditâ means a short beep while "dah"
means a long beep (three times as long). âBrapâ means
-a long dissonant tone. Table 3.1. AltOS Modes Mode Name | Abbreviation | Beeps | Description | Startup | S | battery voltage in decivolts | Calibrating sensors, detecting orientation. | Idle | I | dit dit | Ready to accept commands over USB | Pad | P | dit dah dah dit | Waiting for launch. Not listening for commands. | Boost | B | dah dit dit dit | Accelerating upwards. | Fast | F | dit dit dah dit | Decelerating, but moving faster than 200m/s. | Coast | C | dah dit dah dit | Decelerating, moving slower than 200m/s | Drogue | D | dah dit dit | Descending after apogee. Above main height. | Main | M | dah dah | Descending. Below main height. | Landed | L | dit dah dit dit | Stable altitude for at least ten seconds. | Sensor error | X | dah dit dit dah | Error detected during sensor calibration. |
Hereâs a summary of all of the Pad and Idle mode
+a long dissonant tone. Table 3.1. AltOS Modes Mode Name | Abbreviation | Beeps | Description | Startup | S | battery voltage in decivolts | Calibrating sensors, detecting orientation. | Idle | I | dit dit | Ready to accept commands over USB | Pad | P | dit dah dah dit | Waiting for launch. Not listening for commands. | Boost | B | dah dit dit dit | Accelerating upwards. | Fast | F | dit dit dah dit | Decelerating, but moving faster than 200m/s. | Coast | C | dah dit dah dit | Decelerating, moving slower than 200m/s | Drogue | D | dah dit dit | Descending after apogee. Above main height. | Main | M | dah dah | Descending. Below main height. | Landed | L | dit dah dit dit | Stable altitude for at least ten seconds. | Sensor error | X | dah dit dit dah | Error detected during sensor calibration. |
Hereâs a summary of all of the Pad and Idle mode
indications. In Idle mode, youâll hear one of these
just once after the two short dits indicating idle
mode. In Pad mode, after the dit dah dah dit
indicating Pad mode, youâll hear these once every five
-seconds. Table 3.2. Pad/Idle Indications Name | Beeps | Description |
---|
Neither | brap | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. | Storage Full | warble | On-board data logging storage is full. This will
+seconds. Table 3.2. Pad/Idle Indications Name | Beeps | Description |
---|
Neither | brap | No continuity detected on either apogee or main igniters. | Apogee | dit | Continuity detected only on apogee igniter. | Main | dit dit | Continuity detected only on main igniter. | Both | dit dit dit | Continuity detected on both igniters. | Storage Full | warble | On-board data logging storage is full. This will
not prevent the flight computer from safely
controlling the flight or transmitting telemetry
signals, but no record of the flight will be
@@ -167,7 +175,7 @@ is
designed to use either a
lithium polymer battery or any other battery producing
between 4 and 12 volts, such as a rectangular 9V
-battery. EasyMini is built on a 0.8 inch by 1½ inch circuit board. Itâs
+battery. EasyMini is built on a 0.8 inch by 1½ inch circuit board. Itâs
designed to fit in a 24mm coupler tube. You usually donât need to configure EasyMini at all; itâs set
up to do dual-deployment with an event at apogee to separate
the airframe and deploy a drogue and another event at 250m
@@ -178,7 +186,7 @@ board. Using the picture
above, the top four have connections for the main pyro
circuit and an external battery and the bottom four have
connections for the apogee pyro circuit and the power
-switch. Counting from the left, the connections are as follows: Table 4.1. EasyMini Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Main - | Main pyro channel connection to pyro circuit | Top 2 | Main | Main pyro channel common connection to battery | Top 3 | Battery | Positive external battery terminal | Top 4 | Battery - | Negative external battery terminal | Bottom 1 | Apogee - | Apogee pyro channel connection to pyro circuit | Bottom 2 | Apogee | Apogee pyro channel common connection to battery | Bottom 3 | Switch Output | Switch connection to flight computer | Bottom 4 | Switch Input | Switch connection to positive battery terminal |
4.2. Connecting A Battery To EasyMiniThere are two possible battery connections on
+switch. Counting from the left, the connections are as follows: Table 4.1. EasyMini Screw Terminals Terminal # | Terminal Name | Description |
---|
Top 1 | Main - | Main pyro channel connection to pyro circuit | Top 2 | Main | Main pyro channel common connection to battery | Top 3 | Battery | Positive external battery terminal | Top 4 | Battery - | Negative external battery terminal | Bottom 1 | Apogee - | Apogee pyro channel connection to pyro circuit | Bottom 2 | Apogee | Apogee pyro channel common connection to battery | Bottom 3 | Switch Output | Switch connection to flight computer | Bottom 4 | Switch Input | Switch connection to positive battery terminal |
4.2. Connecting A Battery To EasyMiniThere are two possible battery connections on
EasyMini. You can use either method; both feed
through the power switch terminals. One battery connection is the standard Altus Metrum
white JST plug. This mates with single-cell Lithium
@@ -276,7 +284,7 @@ feel free to dive in and help! Or let us know what
youâd like to see that we arenât already working on,
and maybe weâll get excited about it too⦠Watch our web site for
more news and information as our family of products
-evolves! The AltosUI program provides a graphical user interface for
+evolves! The AltosUI program provides a graphical user interface for
interacting with the Altus Metrum product family. AltosUI can
monitor telemetry data, configure devices and many other
tasks. The primary interface window provides a selection of
@@ -310,7 +318,7 @@ record file, either a .telem file recording telemetry data or a
flash memory. Note that telemetry files will generally produce poor graphs
due to the lower sampling rate and missed telemetry packets.
Use saved flight data in .eeprom files for graphing where possible. Once a flight record is selected, a window with multiple tabs is
-opened. By default, the graph contains acceleration (blue),
+opened. By default, the graph contains acceleration (blue),
velocity (green) and altitude (red). The graph can be zoomed into a particular area by
clicking and dragging down and to the right. Once
zoomed, the graph can be reset by clicking and
@@ -318,7 +326,7 @@ dragging up and to the left. Holding down control and
clicking and dragging allows the graph to be panned.
The right mouse button causes a pop-up menu to be
displayed, giving you the option save or print the
-plot. This selects which graph elements to show, and, at the
+plot. This selects which graph elements to show, and, at the
very bottom. It also lets you configure how
the graph is drawn: -
Whether to use metric or imperial units
@@ -339,7 +347,7 @@ descent. Flight computers without
accelerometers always compute both speed and
acceleration from barometric data. A larger
value smooths the data more.
-
7.3.3. Flight StatisticsShows overall data computed from the flight. This tool takes the raw data files and makes them
+ 7.3.3. Flight StatisticsShows overall data computed from the flight. This tool takes the raw data files and makes them
available for external analysis. When you select this
button, you are prompted to select a flight data file,
which can be either a .eeprom or .telem. The .eeprom
@@ -358,7 +366,7 @@ tools can be configured to skip over. The remaining lines of the file cont
each field separated by a comma and at least one
space. All of the sensor values are converted to
standard units, with the barometric data reported in
-both pressure, altitude and height above pad units. 7.5. Configure AltimeterSelect this button and then select an altimeter. The first few lines of the dialog provide information about the
+both pressure, altitude and height above pad units. 7.5. Configure AltimeterSelect this button and then select an altimeter. The first few lines of the dialog provide information about the
connected device, including the product name,
software version and hardware serial number. Below that are the
individual configuration entries. At the bottom of the dialog, there are four buttons: -
@@ -442,7 +450,7 @@ have more than one flight computer in a single
airframe, having all of them sound at the same
frequency can be confusing. This parameter
lets you adjust the base beeper frequency
-value.
This button presents a dialog so that you can
+value. This button presents a dialog so that you can
configure the AltosUI global settings. AltosUI logs all telemetry data and saves all
flash data to this directory. This
directory is also used as the staring point
@@ -476,7 +484,7 @@ EasyMini is
programmed directly
over USB (self programming). Please read
the directions for flashing devices in
-Appendix C, Updating Device Firmware. This activates the igniter circuits in the flight
computer to help test recovery systems
deployment. Selecting the Fire Igniter button brings up the
usual device selection dialog. Pick the desired
@@ -642,7 +650,7 @@ during ascent and 10 samples per second during
descent.
Data are logged to
an on-board flash memory part, which can be partitioned into
-several equal-sized blocks, one for each flight. Table D.1. Data Storage on Altus Metrum altimeters Device | Bytes per Sample | Total Storage | Minutes at Full Rate |
---|
EasyMini | 16 | 1MB | 10 |
The on-board flash is partitioned into separate flight logs,
+several equal-sized blocks, one for each flight. Table D.1. Data Storage on Altus Metrum altimeters Device | Bytes per Sample | Total Storage | Minutes at Full Rate |
---|
EasyMini | 16 | 1MB | 10 |
The on-board flash is partitioned into separate flight logs,
each of a fixed maximum size. Increase the maximum size of
each log and you reduce the number of flights that can be
stored. Decrease the size and you can store more flights. Configuration data is also stored in the flash memory on
@@ -661,7 +669,7 @@ flight data, so be sure to download flight data and erase it
from the flight computer before it fills up. The flight
computer will still successfully control the flight even if it
cannot log data, so the only thing you will lose is the data. Appendix E. Altus Metrum Hardware SpecificationsHereâs the full set of Altus Metrum products, both in
-production and retired. Table E.1. Altus Metrum Flight Computer Electronics Device | Barometer | Z-axis accel | GPS | 3D sensors | Storage | RF Output | Battery |
---|
EasyMini v1.0 | MS5607 30km (100k') | - | - | - | 1MB | - | 3.7-12V |
Table E.2. Altus Metrum Flight Computer Mechanical Components Device | Connectors | Screw Terminals | Width | Length | Tube Size |
---|
EasyMini | Debug USB Battery | Apogee pyro Main pyro Battery | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler |
Appendix F. Release NotesF.1. Release Notes for Version 1.8.5Version 1.8.5 includes fixes to the ground software support
+production and retired. Table E.1. Altus Metrum Flight Computer Electronics Device | Barometer | Z-axis accel | GPS | 3D sensors | Storage | RF Output | Battery |
---|
EasyMini v1.0 | MS5607 30km (100k') | - | - | - | 1MB | - | 3.7-12V |
Table E.2. Altus Metrum Flight Computer Mechanical Components Device | Connectors | Screw Terminals | Width | Length | Tube Size |
---|
EasyMini | Debug USB Battery | Apogee pyro Main pyro Battery | 0.8 inch (2.03cm) | 1½ inch (3.81cm) | 24mm coupler |
Appendix F. Release NotesF.1. Release Notes for Version 1.8.5Version 1.8.5 includes fixes to the ground software support
for TeleBT v4, along with a few other minor updates. -
Fix startup beeps that indicate sensor failures.
-
diff --git a/AltOS/doc/easymini.pdf b/AltOS/doc/easymini.pdf
index 204587b..370be21 100644
Binary files a/AltOS/doc/easymini.pdf and b/AltOS/doc/easymini.pdf differ
diff --git a/AltOS/doc/micropeak.pdf b/AltOS/doc/micropeak.pdf
index 24691bc..8f83b59 100644
Binary files a/AltOS/doc/micropeak.pdf and b/AltOS/doc/micropeak.pdf differ
diff --git a/AltOS/doc/telegps-outline.pdf b/AltOS/doc/telegps-outline.pdf
index e69de29..95b1fc3 100644
Binary files a/AltOS/doc/telegps-outline.pdf and b/AltOS/doc/telegps-outline.pdf differ
diff --git a/AltOS/doc/telegps.html b/AltOS/doc/telegps.html
index 760358f..034c33c 100644
--- a/AltOS/doc/telegps.html
+++ b/AltOS/doc/telegps.html
@@ -217,7 +217,11 @@ altitude and height above pad units.
Before heading out to a new launch site, you can use
this to load satellite images in case you donât have
-internet connectivity at the site. Thereâs a drop-down menu of launch sites we know
+internet connectivity at the site. Try not to wait
+until the last minute, though, particularly if youâre
+heading to a major launch. If too many people are
+all trying to download map data at once, Google may
+limit access until the next day. Thereâs a drop-down menu of launch sites we know
about; if your favorites arenât there, please let us
know the lat/lon and name of the site. The contents of
this list are actually downloaded from our server at
diff --git a/AltOS/doc/telegps.pdf b/AltOS/doc/telegps.pdf
index 2348133..97b0782 100644
Binary files a/AltOS/doc/telegps.pdf and b/AltOS/doc/telegps.pdf differ
diff --git a/AltOS/doc/telemega-outline.pdf b/AltOS/doc/telemega-outline.pdf
index e69de29..812f9cd 100644
Binary files a/AltOS/doc/telemega-outline.pdf and b/AltOS/doc/telemega-outline.pdf differ
diff --git a/AltOS/doc/telemetrum-outline.pdf b/AltOS/doc/telemetrum-outline.pdf
index e69de29..a24ef49 100644
Binary files a/AltOS/doc/telemetrum-outline.pdf and b/AltOS/doc/telemetrum-outline.pdf differ
diff --git a/AltOS/doc/telemetry.pdf b/AltOS/doc/telemetry.pdf
index 0976d17..ded6a2c 100644
Binary files a/AltOS/doc/telemetry.pdf and b/AltOS/doc/telemetry.pdf differ
diff --git a/AltOS/doc/telemini-v1-outline.pdf b/AltOS/doc/telemini-v1-outline.pdf
index e69de29..744168a 100644
Binary files a/AltOS/doc/telemini-v1-outline.pdf and b/AltOS/doc/telemini-v1-outline.pdf differ
diff --git a/AltOS/doc/telemini-v3-outline.pdf b/AltOS/doc/telemini-v3-outline.pdf
index e69de29..2d00aa4 100644
Binary files a/AltOS/doc/telemini-v3-outline.pdf and b/AltOS/doc/telemini-v3-outline.pdf differ
|
|
|
|