Quantity   Component name
1 × 9V battery connector Wire and Cable / Cable
1 × slide switch
1 × Arduino mini pro 5V
2 × ultrasonic sensor
1 × buzzer
1 × 9V battery
1 × Elegoo 3 multicolores Dupont fil Wire jumper
2 × HXT900 micro servo Wire and Cable / Wire and Cable Identification
1 × Arduino Uno