Re: life span durable ground based 'satellite' device.


Christopher Ott wrote:
My initial concern with using a solar panel over a long duration would be
environmental. Rain, hail or wind damage, bird droppings, insects, etc. If
you're expecting to make this thing operate for decades without any contact,
a solar panel would be a poor start.

The minimum power I need, I can get from a 8 square inch solar cell
panel.
If a make the panel's surface as big as something like 3 square feet I
can lose a lot of power.

And maybe rain and decay of organic material will reduce the power
loss. I have no information about this issue yet.


Tadiran batteries www.tadiranbat.com might have a better option. This would
get you 20+ years on a single battery provided you do your power conversions
correctly. As these batteries are 3.6v, you would need to check with them to
see if putting them in series will reduce the lifespan (assuming 3.6v is not
enough).

Thanks for the link.


On a side note, you do need to address how you're going to get your data out
of the device...

I won't. The idea is to make a time capsule full of daily recorded
sounds and token pictures.

.

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