[Cumulus] Some Cumulus experiences

[Eggert Ehmke]

Hello Hendrik,

On Tuesday 02 August 2011 00:24:32 Hendrik Hoeth wrote:
> Thus spake Eggert Ehmke (eggert.ehmke at berlin.de):
> > Hardware: it is important to have the internal battery loaded when
> > starting a task. When connected to external battery with empty internal
> > battery, it starts charging and is not usable in this state. This seems
> > logical and I just ignored the fact. So my first competition day had to
> > be done without Cumulus> 
> > :-( The LX20 did not show me a restricted area in advance, so I earned
> > :some> 
> > penalty points.
> 
> Hmmm, that's interesting. I do charge my N810 before flight, but mostly
> because I don't want to drain more from my glider's battery than
> necessary. Having said that, I have flown with the N810 partially
> charged and it was perfectly usable while charging in flight. What's the
> setup you are using?

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.

> I use a cheap aftermarket charger cable that has a DC-DC converter and
> the small Nokia plug, and connected that to my 12V board system. The
> cable is routed through the panel, so I can plug it into the N810:
> http://www.linta.de/~hoeth/img_8871_small.jpg
> (the USB cable in the picture goes to a USB-serial adapter on the
> Cambridge.)

Your vario looks nice :-)
Do you get your GPS signal via the Cambridge?

-cu
Eggert