I have just tested a small instrumentation project (which Sid is familiar
with) that uses individual 1" tall 7 seg LED's from Lumex. I did all I could
to maximize the brightness - even cheating with the current to the point of
knowingly having shortened the part's life span.
Indoors, in any lighting condition I can reasonably produce, the brightness
is fantastic.
Outdoors, it's a real dog, only clearly readable in shade or indirect
sunlight.
I have tried tinted plastic of various densities and at varying distances
from the display surface - all to no avail.
The only thing I have left to try is to increase the mux freq a bit, but am
now questioning how much difference this CAN make.

I have seen LED displays in outdoor environments, and with the latest
generation of ultrabrights available I would expect more...
Am I missing something, or should I just ditch the LED idea and go to a
different display technolgy???

Chris

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