Model Description:
This model is the CargoRover-G, an autonomous 4-wheel drive delivery robot chassis, designed as part of a comprehensive engineering graduation project. The design balances futuristic aesthetics with modularity and practical functionality.

Based on the provided design reference (Image References image_0.png through image_4.png), this robot features a rugged, panel-lined body constructed from durable light grey composite-inspired materials.

Key Design Features:

Modular Storage Bays: The large top surface is distinctly divided into four separate cargo compartments with split lids. One compartment features a dedicated handle for secure access. This configuration is optimized for secure multi-customer deliveries (similar internal compartmentalization

Robust Drivetrain Design:

The model includes detailed engineering of the lower chassis, designed for a powerful 4x4 motor setup. The specific wheel design includes robust, detailed tread patterns for traction on varied surfaces.

Bill of Materials (BOM) & Hardware:
While this listing is for the 3D printed chassis files, the complete functioning robot from my graduation project utilizes the following hardware (adjust based on your actual specs):

1-Motors: [e.g., 4x Gear motors]
2-Wheels: Prints included, or purchase [e.g., standard 120mm rugged wheels].
3-Microcontrollers/Processors: [e.g., Raspberry Pi 4 for Navigation, Arduino for low-level control].
4-Sensors: [e.g., RPLidar A2, Camera module].

5-Battery: [e.g., 12V LiPo battery pack].
6-Assembly Hardware: M3 screws, nuts, spacers.

Assembly Instructions:
Due to the intricate details and modular construction of this robot, standard text descriptions can be confusing. To ensure a smooth build process, I have posted a detailed step-by-step assembly guide in the form of a GIF/video.

delivreyrobov19-ezgif.com-video-to-gif-converter.gif

This video clearly shows how to connect the chassis pieces, install the motors, wire the internal components, and attach the four modular lids in the correct order.

3D Print Recommendations:
This model is designed for a balance of structural integrity and aesthetic clarity.

Key Settings for Core Components:

Chassis/Main Body Parts (Pictured in white):

Material: PLA (Aesthetic), PETG or ASA (Structural Strength/Outdoor Use).
Layer Height: 0.2mm - 0.28mm (depending on speed vs. quality).
Infill: 20% - 30% (increase for drivetrain areas).
Support: Required (for internal contours and wheel wells).
Lids & Handle Details:

Material: TPU/PETG.
Orientation: Print flat on the build plate.
Infill: 15%.
Rugged Wheels (Pictured in Black):

Material: TPU (Recommended for actual traction),
Layer Height: 0.2mm.
Perimeters: 3+ (for durability).

delivery robot

0.2mm layer, 2 walls, 10% infill