AVR-Chat

David Kelly wrote:
> While the topic of displays is active, any interesting low-budget 
> solutions of large outdoor readable displays? Digits have to be at 
> least 2" high. Would really like to have one of those florescent dot 
> displays which many businesses use on their street signs, but can't 
> afford one. At least not a new one.
> 
> In Hare Scrambles (and similar) motorcycle races we usually use barcode 
> stickers on the helmet to score. Rider enters a tent (barcode reads 
> best in the shade) to be scanned then the rider zooms out. The scoring 
> computer instantly knows his position but the idea is to have a display 
> suitable for showing it to the rider.
> 
> This is me, on the motorcycle, getting scored: http://tinyurl.com/25z87
> 
> --
> David Kelly N4HHE, dkelly@HiWAAY.net

I have built many displays for Rally Australia under contract, and I can 
assure you that if the display has a weather shield over the top, and 
the digits are high effeciancy, with red perspex cover, they ARE 
readable in daylight, I drive my displays with ULN2803's, and the 
current is set to around 30mA (not even close to their maximum) I use 
only Kingbright displays, usually 50 or 100mm high digits. If you need 
part numbers I can dig them up :)

Regards,

Kat.