Garbage has become a serious problem in many big cities in Indonesia, especially in Jakarta. Currently, there are many people who do not know about the garbage problem. They ignore the importance of handling waste in the neighborhood because of the lack of awareness of the community itself. So far, the government has made several efforts to overcome the problem of waste in Jakarta. They have provided public bin with 3 different categories in public places. However, people still do not care and still throw their garbage randomly without considering the category. Researchers designed a prototype from a trash can differentiate garbage by category and can be open-closed automatically with the help of Arduino microcontroller and servo motor. The trash can not be opened if the garbage category attached to the sensor does not match. Researchers are trying to find a way to distinguish objects based on the material.
Trash of the same category will have almost the same electrical current (range); while waste with different categories will have a significant difference. Through this concept, researchers create sensors that can conduct electrical current, receive electrical current, and send it back to the microcontroller in the form of data. With this data, researchers created a microcontroller program to operate the bin automatically with the help of servo motors (open-closed) and set the range of data to detect organic, inorganic, and metal trash. Then, with the help of the program, the microcontroller can differentiate the waste by material and decide which lid will open. With this product, people are expected to be aware of the importance of waste processing, especially in sorting waste based on category. Furthermore, waste processing will become easier because the garbage has been sorted.