Quantity   Component name
1 × Arduino (Uno or Micro or Pro)
1 × H-Bridge L293D
2 × 170 Tie-points Mini Solderless Prototype Breadboard for Arduino Shield https://www.ebay.com/itm/6Pcs-170-Tie-points-Mini-Solderless-Prototype-Breadboard-for-Arduino-Shield/272113878964?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
1 × HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor+ Mount Bracket https://www.ebay.com/itm/HC-SR04-Ultrasonic-Module-Distance-Measuring-Transducer-Sensor-Mount-Bracket/172785756026
2 × Micro Speed Reduction Gear Motor with Metal Gearbox Wheel DC 6V 30RPM N20 https://www.ebay.com/itm/311563217657
2 × wheels I got mine from a broken toy truck
1 × USB battery
1 × Some wires