2pcs TT DC Gear Motor 3V-6V with 65mm Wheels Set for Arduino Smart Car Robot Chassis, DIY Robotics Drive Kit, Dual Motor Wheel Replacement for Line Follower & Obstacle Avoidance Cars

Overview

This 2pcs DC Motor and Wheel Set is designed for DIY robotics and Arduino-compatible smart car builds. It includes 2 TT-style DC geared motors and 2 matching 65mm wheels, providing a practical, ready-to-install drive solution for small robot chassis. TT gear motors are widely used in educational and hobby robotics because they combine a compact DC motor with a reduction gearbox, producing usable torque at low voltages for smooth, controllable motion.

Technical Details

Each TT motor is a brushed DC motor coupled to a plastic reduction gearbox. The gearbox increases output torque and reduces output speed compared with a direct-drive motor, making it easier for a small robot to start moving from rest, climb minor surface transitions, and maintain speed under light load. The motors are controlled through a standard 2-wire interface; reversing polarity reverses direction. For microcontroller projects, an H-bridge motor driver is typically used to provide bidirectional control and PWM speed regulation.

The included wheels are 65mm diameter with a rubber tire for improved grip. Wheel diameter directly affects speed and torque at the ground: larger wheels increase linear speed for a given motor RPM but require more torque to accelerate. The 65mm size is a common balance for small robot cars, offering stable rolling and good obstacle clearance for indoor surfaces.

Specifications

• Pack quantity: 2pcs set (2 TT DC gear motors + 2 wheels)
• Motor type: Brushed DC motor with plastic reduction gearbox (TT style)
• Rated voltage range: 3V to 6V (as provided)
• Control method: 2-wire DC; forward/reverse by polarity; speed via PWM using a motor driver (not included)
• Wheel diameter: 65mm (as provided)
• Wheel material: Plastic hub with rubber tire (based on typical 65mm TT wheels and product image)
• Output shaft / wheel interface: TT motor output shaft compatible with common TT press-fit wheels (exact shaft profile may vary by revision; confirm fit if mixing parts)
• Mounting: TT motor body commonly supports chassis mounting via brackets or direct screw mounting depending on chassis design (hardware not included; hole pattern varies by chassis)
• Performance notes: RPM, stall current, and torque vary by motor batch and gearbox ratio; check datasheet or measure under your load for accurate design values

Applications

• Arduino smart car and robot chassis builds (2WD platforms)
• Line follower robots, obstacle avoidance cars, and basic autonomous rover projects
• STEM education kits, classroom demonstrations, and prototyping
• Replacement motors/wheels for common TT-based robot car frames
• Lightweight conveyor, small mechanisms, and motion experiments requiring low-voltage geared drive

Integration Notes

• Power: Use a suitable battery pack within 3V-6V. For best results, ensure your battery can supply the motor current under load; undervoltage or weak batteries can cause brownouts and unstable movement.
• Driver selection: For microcontroller control, use an H-bridge driver sized for your expected current (driver selection depends on motor stall current, which can vary). Add bulk capacitance near the driver to reduce voltage dips.
• Wiring: Keep motor wires short where possible and route away from sensitive sensor lines to reduce electrical noise. Optional small ceramic capacitors across motor terminals can help suppress EMI (not included).
• Mechanics: Ensure both wheels are firmly seated and aligned to reduce wobble. If your chassis requires motor brackets, select brackets designed for TT motors.

Included Components

2pcs TT DC motors + 2pcs 65mm wheels