First Flight Version 1.0
Printed: 1/26/2008
Safety
•
An on-board safety shunt prevents arming of HCX pyro ports while you are transporting or
working on your rocket. It is designed to be quickly and easily removed once the rocket is
on the pad and ready for launch
•
The on-board safety shunt is wired in parallel with the terminals of an optional external
shunt. This allows you to place the pyro safety switch at whatever location is most
convenient for the configuration of your rocket.
•
High current, open drain, power MOSFET switches safely initiate the pyrotechnic events.
•
A reverse-protection diode protects your flight computer from the damage that could be
caused by accidentally connecting a battery backwards.
•
The firmware prevents pyro port 1 from firing a sustainer motor if the rocket has already
passed apogee.
•
If you have configured your flight computer for breakwire detection, the firmware checks
the port’s continuity at power-on and sounds an alert if the break wire’s circuit is open.
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