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Downloading Flight Data
The Eggtimer records your last 32 flights into its flight memory, reporting three types of data:
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Flight Settings – All of the settings on the Flight Settings menu (or the Presets, if you used one)
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Summary Data – Stuff like apogee, length of flight, maximum velocity, etc.
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Detail Data – A CSV-formatted data stream with elapsed time, altitude, and velocity
You may not be able to use all 32 flights’ worth of data, because if you abort a flight you are going
to get a “null” flight that consists only of the Flight Settings with no data. You will also get this if
you have it on the bench and pass through the programming screens. This is not necessarily bad,
you can use it while your rocket is on the pad to see if the deployment channels pass the self-test,
then you can turn on the Reset switch until about a minute before launch. Some clubs launch only at
the hour or half-hour, so you can save some battery life by checking the deployment channels first
then holding on the pad until right before your launch slot.
To enter the Flight Display screen, hit the “?” key at the Flight Settings screen. You will see
something that looks like this:
Eggtimer Build-1.48b Saved Flight Summary
Page Apogee Max V Comments
A 18 1347 565 flight 2013-04-28a f24 dd
B 17 1235 420 F30 Flight 3
C 16 0 0 F30 Flight 3
D 15 1346 416 F30 Flight 2
E 14 0 0 F30 Flight 2
F 13 0 0 Test F30
G 12 1170 387 Default Flight6
H 11 0 0 Test
I 10 642 239 Vagabond E12
J 9 939 412 Vagabond E28
K 8 1509 487 Vagabond F39 #2
L 7 1498 512 Vagabond F39 #1
M 6 509 193 E9
N 5 627 267 E12
O 4 2131 442 Goblin G77 #2
P 3 2281 458 Goblin G77 #1
The most recent 16 flights are displayed on the first screen. To toggle between the two 16-flight
display screens, hit the “+” or “-“ key.
To select a flight to display, hit the letter key for that flight, from A-P. (Case doesn’t matter, you can
hit “a-p” too). For example, if you wanted to download the data for the flight “F30 Flight 2” you
would hit the “D” key. From this display, you can see that there are some null flights; since some of
them have the same name as the subsequent “real” flight, you can probably surmise that they were
deployment channel tests before a live flight.