A set of four Tamiya wheels with a width of 16 mm and a diameter of 36 mm. Pololu 65

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8 ° per step), has a nominal voltage of 7.4 V, and draws a current of 0.28 A per coil. Pololu 1207

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), a rated voltage of 10 V, and draws a current of 0.5 A per coil. Pololu 1208

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), a rated voltage of 3.9 V, and draws a current of 0.6 A per coil. Pololu 1204

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), rated voltage of 3.8 V, and has a current consumption of 0.67 A per coil. Pololu 1205

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), a rated voltage of 4.5 V, and draws a current of 0.67 A per coil. Pololu 1206

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8 ° per step), a rated voltage of 2.7V, and draws a current of 1A per coil. Pololu 1209

Bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), has a nominal voltage of 4 V and draws a current of 1.2 A per coil. Pololu 1200

The Step-Up Buck Voltage Regulator module with adjustable output voltage in range of 2.5-9.5V with a input voltage range of 1.5-16V and a maximum output current of 2A. Pololu 791

The Step-Down D24V6AHV Buck Voltage Regulator module with adjustable output voltage in the range of 4-25V with a wide input voltage range of 4.5-42V and a maximum output current of 600 mA. Pololu 2104

Dual MC33926 Motor Driver CarrierTwo-channel DC motor controller with voltage from 5 V to 28 V, power consumption up to 3 A per channel. Controlled by PWM signal. Pololu 1213

Ultrasonic distance sensor MB1200 with a range from 0 to 765 cm. It generates an output in the form of a pulse, the duration of which is proportional to the measured distance. Pololu 1650