First Flight Version 1.0
Date Printed: 1/26/2008
Appendix B – Flight Computer Status Codes
These status codes are listed by how frequently they are heard. The Normal sequence is listed first
and then the error code sequences, 1) low battery, 2) unplugged SD card, 3) breakwire error and 4)
power-on self-test failure.
Normal Status Code
1.
LED turns on then off.
2.
The LED turns on and the beeper gives one (JP7 OUT) or two (JP7 IN) low pitch beeps.
3.
LED turns off.
4.
There is a half second pause.
5.
Starting with pyro port one, each pyro port reports status with either a single quick “beep” (for
good continuity) or a double “beep” if the port has incomplete continuity.
6.
A one second pause, and then the sequence repeats from step 2.
Non-Fatal Error Status Codes
Low Battery
1.
LED turns on, then off.
2.
The LED turns on and the beeper gives one (JP7 OUT) or two (JP7 IN) low pitch beeps.
3.
After a half second pause, the beeper gives a short warble.
4.
LED turns off.
5.
There is a half second pause.
6.
Starting with pyro port one, each pyro port reports status with either a single quick “beep” (for
good continuity) or a double “beep” if the port has incomplete continuity.
7.
A 1 second pause, and then the sequence repeats from step 2.
If you hear this sequence, you have less than sixty minutes before your batteries die. If possible,
change your batteries to avoid losing power during your flight.. If this is not possible, for example,
because your rocket is already assembled and on the pad, ask the LCO to expedite your launch.
SD Card is Unplugged
1.
The LED turns on then off.
2.
Long, High pitch beep.
3.
Long, low pitch beep.
4.
A 3/4 second pause.
5.
Normal status code starts.
While you can still fly without the SD Card installed, your flight computer will have no means of
recording the flight data.
The flight computer will still be able to fire all events and your maximum altitude will beep out
after landing.
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