Smart 2WD Car
A beginner-friendly 2-wheel smart robot car platform. Fully 3D-printed chassis with off-the-shelf electronics, perfect for students who want to learn robotics, Arduino, and sensors in a hands‑on way.
3D Printed Parts:
Main chassis plate with motor mounts and battery space.
Wheel hubs (if you don’t use ready-made wheels).
Front sensor mount (for ultrasonic / IR).
Optional: cable clips, top cover, decorative body.
Electronics & Hardware:
1× Arduino Uno or Nano.
1× Motor driver (TB6612FNG or L298N).
2× DC gear motors (TT or N20) + 2 wheels.
1× Ultrasonic sensor (HC‑SR04) + holder (optional IR sensors for line).
1× Battery holder (Li‑ion pack or 4×AA) + on/off switch.
Jump wires, M3 screws, nuts, standoffs.
Basic Assembly Steps:
Print the chassis, sensor mount, and wheel hubs in PLA or PETG.
Mount the two DC motors to the 3D printed chassis using M3 screws and attach the wheels.
Fix the Arduino and motor driver on standoffs above the chassis.
Connect motors to the driver, driver to the Arduino, and power (battery) according to the wiring diagram.
Mount the ultrasonic (and/or line sensors) to the 3D printed sensor bracket and wire them to the Arduino.
Upload a ready-made example (line following or obstacle avoidance) and tune motor speed / sensor thresholds.
