A reliable Arduino robot car BOM keeps wiring simple and gives motors their own power path.
An Arduino robot car is still one of the best first robotics projects because every problem is visible: wiring, power, motor direction, sensor noise and code timing. The right parts list avoids the common reset-and-stall cycle.
Build the base first, then add one behavior at a time: remote control, obstacle avoidance, line following and encoder navigation.
Simple firmware and large beginner community
Cheap drive system
TB6612FNG or similar dual driver
Acrylic, wood or printed base
Motor supply with switch
Stable 5V for Arduino and sensors
Use front distance sensor and simple turn logic.
Use reflectance array and PID speed control.
Treat the generated output as a prototype plan, not a certified product. Body-adjacent, high-voltage, optical-energy and mobility builds need qualified review before real-world use.
Nano is smaller. Uno is easier on a bench. Both are fine.
Use a pack that can supply motor current and regulate logic separately.
Encoders, because they make movement measurable.
Start with this prompt prefilled, then let RoboHub generate the live parts list, wiring plan, CAD and firmware.
Generate build