[Cumulus] Some Cumulus experiences
hendrik.hoeth at cern.ch
Tue Aug 2 12:21:28 CEST 2011
Thus spake Eggert Ehmke (eggert.ehmke at berlin.de):
> I think partially loaded it works ok. In this case it was plain empty
> and rejected to boot when connected to external. I have a separate 12V
> lead battery with a self build 5V adapter. It had worked before and
> worked fine the next day, so I think my adapter is ok.
Are you sure the N810 _charges_ on that adapter, or does it only run
without actually charging the battery? I tried a 5V supply first, and
while it would run and draw current, it refused to charge the battery.
Turns out that the Nokia chargers actually supply a slightly higher
voltage, around 5.1-5.2V if I remember correctly. So I changed my DC-DC
converter and voila, it works.
> Your vario looks nice :-)
And so does the altimeter. In fact a bit later I even saw 5.7 m/s on the
averager. It was a rotor at the top of the wave, due to a sharp wind
shear. The wind speed dropped off from 70 km/h to 15 km/h within 300 m,
causing the rotor. I wasn't able to climb any higher than the top of
that rotor. Great flight, but bloody cold.
> Do you get your GPS signal via the Cambridge?
Yes, I do. GPS, McCready, wind (strength and direction), and the current
vario reading all come from the Cambridge.
A man without a dream in his heart already has one foot in the grave.
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