In my post about the new field mat (Oct. 18), I might have spoken too soon. I am getting emails about how kids are having trouble sensing the green line on the mat with the RGB Color sensor. There seems to be no problem sensing the green bottle, but sometimes the green line on the mat is not picked up or a black line is sensed for the green. The White and the Black lines seem to work perfectly fine.
So I am working on several programs to see exactly where the problem is. If anyone has some information as to a solution. Please feel free to send a comment.