Smart Trash Cans for Waste Management Using NodeMCU and Ultrasonic Sensor

Poor waste management and lack of public awareness of environmental cleanliness, especially disposing of waste in its place, causes garbage to accumulate and emit a foul odor which can be a source of disease transmission. The lack of information technology for waste management by cleaning staff causes waste handling to be slow. Based on these problems, it is necessary to have an automatic trash can that sorts organic and inorganic waste according to the type of trash and adds an IoT (Internet of Things) function that can quickly provide initial information that the trash can is full. The smart trash can use node MCU, or it can be called ESP8266, to control the system and the connection between the device and WiFi. Ultrasonic sensors detect the presence of humans or objects who come into the trash and the height of the trash. The Servo to control the trash can door. The result of making the tool is shows that the trash bin system we created has an accurate level of volume measurement, as evidenced by R2, which has a value of 0.80 with a correlation value of 0.89, which means that the sensor measurement value and the actual measurement are not much different. In the future, this tool will develop a camera module to distinguish organic and non-organic waste. So that there will be a notification if the garbage entered is the wrong type of garbage