AW: [sdiy] Environmental, Concept, and "Subscription Modules"

[Ullrich Peter]

	>Another idea: why not use a LDR for sunlight detection.
	>Control voltages will depend on night/day, bright sky and rain.
	

	For this purpose an LDR is maybe a cheap but eventually not a good
solution...

	A better solution is the Sharp BS520 photo transistor as it has the same
spectrum as the human eye...

	Datasheet:
http://www.sharp.co.jp/products/device/ctlg/jsite23/table/pdf/dtc/photodiodes/bs
520_j.pdf

	Ciao
	Peter

	http://www.ullrich.at.tt