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The sorter unit is a two dimensional bead sorting and counting system that has two distinct functions. The unit has two hoppers to store fifty white and fifty black beads. Two linear electrical solenoids are used to open and close the gates at the outlets of the hoppers and rolls down the zigzag track. The solenoids can be controlled by a PC and has a number of possible bead patterns in the track. Feedback from an infrared through-beam sensor is used to ascertain if a bead has been successfully dispensed each time.
When both hoppers are empty and the required bead pattern has been achieved the unit may be turned upside down to allow the beads to be sorted back into the respective hoppers. A second pair of solenoids are used to deflect each coloured bead into a hopper. An infrared reflective sensor is used to determine the colour of each bead.
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