[hackerspaces] solar

Georges Toth georges at trypill.org
Tue Apr 27 10:24:30 CEST 2010

On Monday 26 April 2010 13:33:29 Koen Martens wrote:
> On Mon, Apr 26, 2010 at 01:15:50PM +0200, Georges Toth wrote:
> > It's a kyocera panel from 1998, with 36 cells.
> > It was in service for most of that time until recently, which is why I
> > was surprised to see it still performing like on the specs.
> Aha, so you got them for free/cheap somewhere, nice!

Yeah, it was a donation :-)

> > I only quickly tested it for the first time now, so I don't have too
> > knowledge about this one.
> > 
> > When the sun was covered with a cloud, the current dropped quickly to 3A
> > and less.
> > I will try to hack a small circuit for measuring light, voltage and
> > current, over a day...
> Nice stuff, i've been meaning to experiment with solar a bit, but cost and
> the lack of a place to put them up prohibited that intention from becoming
> action. However, our hackerspace has a 400m^2 flat roof, so that solves
> the latter problem already.

Apparently I did my measurements wrong because you cannot measure a solar 
panel without load. So the real result is still pretty good for such an old 
panel. I get around 50W+ ... will see more accurate data when I start my whole 
day measurements.

Wow cool, 400m^2 :-), I guess you could put *a lot* of solar panels up there 
Were they only cheaper...


Georges Toth

HaxoGreen 2010 - the Hackers' Summercamp in Luxembourg
July 22nd till July 25th 2010, in Dudelange, Luxembourg
Register Now: http://events.hackerspace.lu/camp/2010/
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