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EcoVision

A smart waste sorting pendulum system to classify and physically sort trash.

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A smart waste sorting pendulum system to classify and physically sort trash.

Our project is an automated waste-sorting system that uses a motorized pendulum and computer vision to classify and sort disposal items. We developed a custom image classification pipeline based on MobileNetV3, which we optimized by masking trash datasets onto our specific background using SAM3 to ensure the model performed reliably in our environment. 

On the hardware side, we tuned the motor’s motion profiles and counterweighting to handle the increased moment of inertia from heavier trash, successfully balancing the system for a wide range of common waste. Despite some hardware challenges, including a blown buck converter, we successfully integrated the vision and motor control code into a functional prototype capable of an 80-90% success rate.

IMG_5401.MOV

Final demo and presentation.

quicktime - 33.14 MB - 04/03/2026 at 05:47

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CF8B9E08-E367-4885-8DD1-1761BFBF303C.mov

Top view demo

quicktime - 14.64 MB - 04/03/2026 at 05:31

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  • EcoVision story

    Alex Du2 days ago 0 comments

    CAD design for sorter. Trash is kept in the container during classification. Once classified, the container will swing and depose the trash into its respective bin (recycle, trash, compost).

    Full assembly view of CAD design. 

    Electrical system power flowchart.

    Electrical wiring assembly. Buck converter steps down battery voltage for raspberry pi and servo. Battery directly powers stepper motor. 

    Laser cut wood for trash storage. 

    Laser cut acrylic panel, fitted with camera and light mount for trash classification. 

    Assembled trapezoid-classifier part. Will be placed above the 3 bins (recycle, trash, compost)

    Final assembly!

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