Line follower with adjustable sensor holder

3D model description

🔧 Adjustable Line Follower Robot Chassis (BO Motor Compatible)

This is a fully functional and modular robot chassis designed for line follower and basic robotics projects. The design focuses on flexibility, ease of assembly, and compatibility with commonly available components.

🚀 Features:

🔹 Adjustable IR sensor holder with sliding slot

🔹 Compatible with standard BO motors (100–300 RPM range)

🔹 Universal battery mounting area (zip-tie compatible)

🔹 Dedicated space for motor driver (L293D) and microcontroller

🔹 Modular design for easy assembly and customization

🔹 Lightweight and strong structure

🧩 Components Included:

Robot chassis

Motor holder (2x)

Adjustable sensor holder

⚙️ Hardware Required:

M3 screws and nuts

BO motors (2x)

IR sensors

Motor driver (L293D or similar)

Microcontroller (Arduino / ESP32)

Battery (any type, secured using zip ties)

🛠️ Assembly:

Fix motors into holders

Attach holders to chassis

Mount sensor using slot mechanism

Install electronics in dedicated spaces

Secure battery using zip ties

📌 Notes:

Designed with tolerance for easy fitting

Suitable for beginners and students

Can be modified further using provided STEP file

💡 Perfect for robotics projects, competitions, and learning purposes.

3D printing settings

🖨️ Recommended 3D Printing Settings

Material: PLA (recommended) / PETG

Layer Height: 0.2 mm

Infill: 20–30%

Wall Thickness: 1.2–1.6 mm

Print Speed: 40–60 mm/s

Supports: Not required (for most parts)

Bed Adhesion: Skirt or Brim

🔧 Printing Tips:

Print chassis flat on bed

Print motor holders upright for better strength

Ensure proper bed leveling for slot accuracy

Use higher infill (30%) for motor holders if needed

⚠️ Tolerances:

Designed with slight clearance for easy assembly

If fit is tight, lightly sand the parts

📦 Post Processing:

Clean edges if needed

Test fit components before final assembly