I did an outdoor sign that you can see on my web site www.ultranet.com/~nr
. I used 4 superbright leds for each segment of each 7 segment digit. It
works fine outdoors in sunlight. I use T 1 3/4 superbright from HP that are
an orange - yellow in color.

Larry


At 04:37 PM 12/27/01 +0100, you wrote:
>How much LEDs (of the average, 5mm/20mA kind) must I roughly use to make a
>7-segment display that has good visibility in 'average' outdoor daylight?
>The application is a countdown display for a car race, each digit 20 .. 50
>cm high. Any experience, URLs?
>
>Wouter van Ooijen
>
>Van Ooijen Technische Informatica: http://www.voti.nl
>Jal compiler for PIC uC's:  http://www.voti.nl/jal
>PICs kopen? http://www.voti.nl/shop
>
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>
>
Larry G. Nelson Sr.
mailto:L.Nelson@ieee.org
http://www.ultranet.com/~nr

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