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We can control where Edison drives to, by moving a torch because Edison has:
Why do you think Edison has 2 light sensors (left and right) and not just one?
The barcode entitled “Follow torch” loads a program into Edison’s memory. This program “tells” Edison to follow light.
To have Edison scan the barcode, we have to place Edison on the left side facing the barcode and press the round button three times.
Edison’s light sensors are: