Quantity   Component name
1 × Quickstart or other prop board
1 × hc06 bluetooth serial cable replacement
1 × sr04 ultrasonic range finder
2 × ULN2003 + 28BYJ-48 stepper motor + Driver
16 × jumper wires
1 × 10k resistor
1 × any chunk of foam
1 × pins
1 × painters tape
1 × 4xAA battery pack
4 × AA rechargable batteries