This project is a smart waste segregation robotic arm that automatically detects and sorts wet, dry, and metal waste into separate bins using a combination of sensors and servo motors. An ultrasonic sensor detects the presence of waste, while metal and rain sensors identify its type. The robotic arm then picks up the waste and places it in the appropriate bin. Optional voice modules can provide audio feedback for each type.
Price : 18000
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| Component | Quantity | Description |
|---|---|---|
| Arduino Uno | 1 | Microcontroller for logic and control |
| Servo Motors (e.g. SG90/MG996R) | 4 | For robotic arm movement and bin rotation |
| Ultrasonic Sensor (HC-SR04) | 1 | Detects presence of waste |
| Inductive Proximity Sensor (e.g., LJ12A3) | 1 | Detects metal objects |
| Rain Sensor (Analog/Digital) | 1 | Detects moisture to classify wet waste |
| Voice Playback Module (Optional) | 1–3 | Plays voice for "Wet", "Dry", "Metal" feedback |
| Jumper Wires + Breadboard | — | For connections |
| Power Supply (5V) | 1 | External supply for servos |
| Waste Bins | 3 | For sorting wet, dry, and metal waste |
The ultrasonic sensor continuously checks for objects (waste).
Once an object is detected within 10 cm, it is flagged for sorting.
If the metal sensor is triggered → object is metal.
If the rain sensor detects moisture → object is wet.
If none are triggered → object is considered dry.
The corresponding voice module pin is activated to announce the type of waste.
The robotic arm executes a pick-and-place operation:
Moves the arm down and opens the gripper.
Closes the gripper to grab the object.
Lifts the object and rotates the servoBin to the correct bin.
Drops the object into the bin.
The servos return to their initial positions, ready for the next item.