187.5175.0101.0
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Interactive 3D model of 4WD Robotic Smart Car Assembly

Brackets and mounts

4WD Robotic Smart Car Assembly

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Bounding box
175.0 × 187.5 × 101.0 mm
Engine
Precision B-rep
Parameters
38
Published
October 6, 2026

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The prompt

A realistic 3D model of an AI-powered robotic smart car built on a 4-wheel drive chassis kit. On top of the chassis, mount a central Raspberry Pi Zero 2W board (as the main brain), a Raspberry Pi camera module attached via ribbon cable facing forward (for vision tracking), a small USB mini microphone, a 3W mono speaker with a PAM8403 amplifier module, an L298N motor driver board wired to four DC motors on the wheels, and a compact 5V power bank placed neatly in the middle to power the entire electronics system. The design should clearly showcase an integrated, clean assembly of a smart robotics project suitable for a science exhibition."

Parameters

NameValueRange
Chassis Length170 mm100 – 300
Chassis Width130 mm80 – 220
Chassis Thickness3 mm2 – 10
Mounting Hole Diameter3.2 mm1 – 8
DC Motor Length70 mm30 – 120
DC Motor Width22 mm10 – 40
DC Motor Height18 mm10 – 40
Wheel Diameter65 mm30 – 120
Wheel Width27 mm10 – 60
Wheelbase (Front-Rear X)100 mm60 – 200
Track Width (Left-Right Y)160 mm90 – 220
Wheel Top Inset from Chassis2 mm0 – 10
Power Bank Length90 mm50 – 150
Power Bank Width60 mm30 – 100
Power Bank Height20 mm10 – 50
Raspberry Pi Zero 2W Length65 mm30 – 100
Raspberry Pi Zero 2W Width30 mm20 – 60
Raspberry Pi PCB Thickness5 mm1 – 10
Pi Standoff Height10 mm2 – 30
Standoff Diameter4 mm2 – 8
L298N Length43 mm30 – 80
L298N Width43 mm30 – 80
L298N Height27 mm10 – 60
Camera PCB Length (Y)25 mm10 – 40
Camera PCB Height (Z)24 mm10 – 40
Camera PCB Thickness (X)5 mm1 – 10
Camera Lens Diameter8 mm3 – 15
Camera Lens Length5 mm2 – 15
Microphone Length20 mm10 – 40
Microphone Width15 mm5 – 30
Microphone Height8 mm2 – 20
Speaker Diameter50 mm30 – 80
Speaker Thickness20 mm5 – 40
PAM8403 Length30 mm15 – 50
PAM8403 Width20 mm10 – 40
PAM8403 Thickness5 mm1 – 10
Ribbon Cable Width10 mm3 – 20
Ribbon Cable Thickness0.5 mm0.2 – 2

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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4WD Robotic Smart Car Assembly - Free CAD Model (STEP, STL) | TextoCAD