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