Article View: sci.electronics
Article #21109Re: Light Duration Meter
From: Mark Zenier
Date: Mon, 10 Apr 1989 02:42
Date: Mon, 10 Apr 1989 02:42
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1416 bytes
In article <102@raider.MFEE.TN.US>, root@raider.MFEE.TN.US (Bob Reineri) writes:
> I've recently planted our first garden, and being the computer nut that I am,
> love to keep records. The rainfall and temperature are easy enough to get. The
> other item I would like to track is the amount of sunlight the garden gets on
> a daily basis. I am entering all this into a database so I'll have something
> to ponder over the next winter.
>
> Does anyone have any ideas on what might be a suitable circuit for this applic-
> ation ?
One neat thing was published in Whole Earth Review/ COevolution Quarterly.
A big Fresnel lens and a board. The focused sunlight burned the board
showing the sunlight or lack of it. A new board every day.
If that's not high tech enough, you could get a TV camera and a frame
grabber to read off the days board.
Mark Zenier uunet!nwnexus!pilchuck!ssc!markz markz@ssc.uucp
uunet!amc!
uw-beaver!tikal!
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!mit-eddie!uw-beaver!uw-june!uw-entropy!quick!amc!pilchuck!ssc!markz From: markz@ssc.UUCP (Mark Zenier) Newsgroups: sci.electronics Subject: Re: Light Duration Meter Message-ID: <1896@ssc.UUCP> Date: 10 Apr 89 02:42:55 GMT References: <102@raider.MFEE.TN.US> Organization: SSC, Inc., Seattle, WA Lines: 22