🔹 How It Works Ultrasonic Sensor Detection: The HC-SR04 ultrasonic sensor continuously measures the distance of nearby objects. If an object (such as a hand) is detected within 15 cm, the sensor ...

The Smart Dustbin is an automated, touchless waste disposal system that opens its lid automatically when it detects a person approaching. This improves hygiene by eliminating the need for physical ...

You'll have a bit of control over what you choose for the motion sensor, motor, and jumper wires. You can pick up a pack of six SG90 motors from Amazon for a little under $12. A 10-pack of the HC ...

Testing revealed that the bin's infrared (IR) sensor effectively counted bottles when inserted one at a time but struggled with multiple bottles, often registering just one. After five bottles, the ...