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Arduino Lap timer base for Race Coordinator
#10

For several years I have used 5mm I-R LED receivers under the track surface with matching emitters overhead. Very recently I spotted sideways-facing LEDs and have been successfully trialling those as they fit nicely under the track surface (Policar). The receivers work well with white LEDs overhead so that will make life a bit easier when using temporary layouts and free-standing light-bridge. 

Leo

Ebay Linky:    https://www.ebay.co.uk/itm/225484518933

My proof of concept set up in Scalextric START track.

   

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