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If i use 3 ultrasonic sensors (e.g. a maxsonar EZ-51 or a ping))) on perpendicular of each other to detect object and determine its heights would i face any problems? Wave interference maybe?
two kinds of objects cans and tetrapacks. Heights 3.5 cm and 8cm. If the lowest sensor gets a smaller reading than the two above then its a can if the two lower sensors have the same reading and the one above has a greater reading then its a tetrapack if the 3 sensors have the same reading the its wall