Quantity   Component name
1 × NEMA 17 stepper motor model 17HS3404-Z
1 × A4988 stepper driver module
1 × TCS34725 colour sensor module
1 × Arduino Nano or compatible clone
1 × small dc motor (e.g. 12V 12000 rpm)
1 × Dual-channel motor driver module L298N-based or similar