smart shopping trolley 3d model

A smart shopping trolley bag with an integrated automated billing system, designed for supermarket use. The trolley has a standard metal wire mesh basket frame on four wheels (two fixed rear wheels, two swivel front wheels). On the FRONT panel: a Raspberry Pi 4B mounted in a clear acrylic enclosure, an iPad tablet mounted vertically on a adjustable arm bracket showing a billing dashboard UI. Below the iPad, an active buzzer and LED indicator lights. On the TOP interior: a Raspberry Pi Camera Module v3 pointed downward into the basket, surrounded by a circular 48-LED ring light for illumination, mounted on a horizontal acrylic frame. On the BOTTOM of the basket: a flat weighing platform made of aluminium, supported by four 50kg load cells at each corner, connected to an HX711 ADC module mounted on the side frame. On the SIDE panel: a PIR motion sensor (HC-SR501) mounted facing outward, a USB power bank mounted in a holder, and wiring channels with organized Dupont jumper