Reinhard Rath <[email protected]> writes: > For a group project, I'm looking into replicatingfunctionality similar > to the Jolly Logic Chute Release, but with a pyro cutter instead of a > servo releasing a rubber band. > > For mechanical reasons, the EasyMini would be mounted in the nose cone > and subjected to the ejection charge pressure. I'm not too concerned > about damaging the sensor, the sensor in the JLCR seems to handle the > same treatment quite well.
While the pressure spikes are bad, the worst part is the corrosive nature of the gasses generated. I've heard of people putting an altimeter in a plastic bag so that pressure can be measured but no gasses are exchanged; if you can think of a way to do that, the baro sensor would last a lot longer. Otherwise, expect to replace the board from time to time. > Do you expect issues from the pressures spikes regarding premature > detection of the main altitude, or is there any other thing that you can > think of the would preclude such "off-label" use of an EasyMini? EasyMini's Kalman filter should survive any weird pressure spikes you impose on it. It works by ignoring 'crazy' data; data where the Kalman error value is high, which indicates that the modeled altitude isn't matching the measured altitude. -- -keith
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