HC-SR04
(Ultrasonic Sensor)

The following link helps us to finish the ultrasonic sensor working. Now, it can work and collect the data of situation in the trash bins. Through the cloud computing, we will show the data on the website. In this regard, more and more convenient is for us to know where the trash bins are empty.

 DHT-11

(Temperature Sensor)

Next, we finish the temperature sensor by the step. Now, we can get the data in the trash bins about the temperature information. It helps us to know whether the fired danger in the trash bins. Avoiding the emergency things happened.