Results & Analysis

Demo

t_video6314591081858072740.mp4

Working mechanism of the trash can

https://drive.google.com/file/d/1vcNPO-CZbAAKYYDiCgvPaT8l5V93gS5F/view?usp=sharing

t_video6314591081858072753.mp4

Real time data of the trash can level through Superchart widget and gauge widget

https://drive.google.com/file/d/19msBaGVK8xLkYqlIA57xLtNI4FlL6rkJ/view?usp=sharing

Notification and emails sent when the trash can level is <10cm.

Sensitivity of Ultrasonic Sensor

To measure the sensitivity of the ultrasonic sensor, we used six measured points which are 0cm, 5cm, 10cm, 15cm, 20cm and 25cm. An object was placed in front of the sensor based on the measured points.

From this test, we observe that, for example when a 5cm measured points is taken and we slowly moves from 5cm to 6cm with 0.1 step size, the serial monitor displays 5cm until it it reaches 6cm.

Table 1

Graph 1

From Table 1 and Graph 1, we can calculate that the ultrasonic sensor has error bars of standard deviation of ± 0.3cm.

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