What happens to your electronic device or appliance when you dispose of them?
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What happens to your electronic device or appliance?
This project proposes a smart system for sorting common beverage containers, controlled by the microcontroller. The system is to differentiate between three
common types of trash: crumpled paper, paper cups, plastic bottles, and aluminum cans. Based on the type of article, the system is to use actuators to
deposit trash to the appropriate trash bin for recycling purposes. The decision on the type of material is to be made via a capacitive sensor. Specifically,
the sensor is to consist of air-filled capacitance plates in parallel. The capacitance will change based on the dielectric constant of the material
presented for sorting. Since the dielectric constants for the three materials are different, the system can make an informed decision. The microcontroller
will determine the type of trash based on capacitance readings. Standard servos will then be used to deposit the trash into an appropriate bin. An additional
capacitor sensor may then be used to further refine the decision. The trashcan also uses capacitance sensors to determine when it is full, and then conveys
the information to the user by means of lighting an LED for the appropriate bin. Another method for sorting trash has been investigated as well. Light will
interact differently with the three materials specified above. Plastic used in bottles and cups is generally transparent. Aluminum can focus reflected light,
while paper scatters it. Using two photoresistors and a light source, the type of material can be inferred using the microcontroller and the RC Time command.
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