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Eggtimer Rocketry Proton User Manual page 37

Board reva9; software rev. 1.01a

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As you can see, they're the same settings from the menus... no further explanation necessary.
Downloading the Flight Detail
In addition to the Flight Summary data, each altitude sample during flight is saved into memory, and
the data can be retrieved and time/event correlated as a standard comma-separated-variable (.csv)
file by clicking on the 'Detail' link at the bottom of the Flight Summary page.
A .csv file is basically just a text file, with commas separating each field. Depending on what apps
you have on your device, it may do one of three things when you click on the Detail link:
1) It may display the data as if it were a text-only web page
2) It may open up some kind of application (i.e. Excel if you have a laptop)
3) It may just sit there and hang because it doesn't know what to do with it
Note that if you download the data on your phone, it may be a little difficult to see. That being said,
we HAVE done it with an iPhone after installing WPS Office (the default on an iPhone is to display
it as a web page). The advantage is that you can literally get a graph of your flight as soon as you
get back to your work table with your rocket and open up the AV bay (you'll need to reset the power
after the flight, remember?) The disadvantage is that the screen is too small to be really useful, even
if you zoom in.
Note that it can take some time (over a minute or two in some cases) to download the detail data,
because of the "on-the-fly" formatting. When you're downloading the data, the little blue LED on
the WiFi module next to the antenna will blink... that's a sign that it's working.
We've had good luck with WPS Office for Android and iOS, it's free and works very well with the
simple .csv data that the Proton sends out, and it's very easy to get a flight/event graph. For a
Windows laptop, we use Excel, but any data analysis program that can take a .csv file will work.
Each entry in the flight detail file looks like this, of course there's a comma between each field...
T (time) – Seconds from Start of Flight (SOF)
The next two fields are barometer-derived...
Alt (altitude) – the RAW pressure-derived altitude value from the altimeter
Veloc (velocity) – the RAW velocity for that sample, derived from the difference in altitude between
this sample and the previous sample and the time interval between them
The next set of fields are accelerometer-derived...
Accel (acceleration) - the RAW acceleration value from the accelerometer, in G's
AccelFPSS (acceleration) - the accelerometer data in ft/sec^2
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