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Pinewood Derby test track timer

I would like to have a timer for testing changes to pinewood derby cars.   Need to have a trigger a the top of the track and one at the finish line.  Could be stand alone with time display or output to a PC for capture of each run.   Better still would be a second set of trips to give a split time 1/2 way down the track.
Since this will be used for testing, it only needs to measure time on one track.  Simple and cheap.

caitlinsdad7 years ago
Without getting into setting up electronics for photo-eyes and laser light beams, maybe you can rig up an cheap electronic stop watch.  Extend the wires from the start stop and lap switches so you can wire them up at the proper points on the track with micro switches activated by hitting a paddle or magnet on the car passing by.  Good luck.