Quantity   Component name
1 × Arduino Uno <a target="_blank" rel="noopener noreferrer" href="https://in.utsource.net/itm/p/8647184.html">https://in.utsource.net/itm/p/8647184.html</a>
1 × SR-04Ultrasonic Sensor <a target="_blank" rel="noopener noreferrer" href="https://in.utsource.net/itm/p/9221822.html">https://in.utsource.net/itm/p/9221822.html</a>
1 × A breadboard (optional) and few header wires