You should be able to make a light curtain with multiple beams -- the distance between beams equal to the height of a basket. Should be less than $5 per light beam, with the number of beams needed equal to the max - min number of baskets expected.
You should be able to make a light curtain with multiple beams -- the distance between beams equal to the height of a basket. Should be less than $5 per light beam, with the number of beams needed equal to the max - min number of baskets expected.