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

Ultrasonic distance sensor MB1000 with a range from 0 to 645 cm. It has an output in the form of a serial interface, an analog signal or generates an impulse whose duration is proportional to the measured distance. Pololu 723

Module with 1 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4341

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

Module with DC motor driver DRV8876. It can work with motors supplied with the voltage from 4.5 to 37 V and current consumption up to 1.1 A. Pololu 4037

Pololu high power miniature motor with carbon brushes. 50:1 gear motor, shaft speed 420 rpm, torque 0,54kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 2379

ACS724LLCTR-30AB current sensor module with a DC and AC measurement range from -30 to +30 A. It communicates via an analog interface. Pololu 4047

This sensor is a carrier/breakout board for ST’s VL53L0X laser-ranging sensor, which measures the range to a target object up to 2 m away.

Adapter for the 6-pin JST SH connector (horizontal) with a pitch of 1 mm to the DIP holes, pitch of 2.54 mm. The set includes 3 modules. Pololu 4773

The Step-Down D24V3F5 Buck Voltage Regulator module gives the output voltage of 5V with a wide input voltage range of 7-42V and a maximum output current of 300 mA. Pololu 2098

ACS724LLCTR-10AB current sensor module with a DC and AC measurement range from -10 to +10 A. It communicates via an analog interface. Pololu 4043

Motor with 37 mm diameter and 54 mm length, 50:1 metal gear, 24 V operating voltage, 0,1 A to 3 A power consumption, 200 RPM speed and 23 maximum torque. Pololu 4683

An efficient step-down converter that steps down the input voltage from as low as 45 V to a regulated output voltage range of 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.8 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4853

Module with DC motor driver DRV8874. It can work with motors supplied with the voltage from 4.5 to 37 V and current consumption up to 2.1 A. Pololu 4035

Mini Tamiya Plug with 10cm Leads, Female

A servo with standard sizes. At 6 V, it can generate a torque of up to 15.5 kg*cm. Additionally equipped with a potentiometer informing about the servo position. It has a standard 3-pin connector matching most popular modeling controllers and an additional servo position pin.

Efficient step-down converter that reduces the input voltage from up to 45 V to a regulated output voltage range from 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.4 A. It has built-in protection against reverse polarity, overload and short circuit, and the spread spectrum function reduces EMI interference. The module is equipped with an additional potentiometer for adjusting the cut-off voltage. Pololu 4872

Female-female cable, 16 cm long, with JST-SH 6-pin plug on both sides. Suitable for micro DC motor encoders with gear. Pololu 4766

Pololu - 3498

DRV8711 stepper motor driver module powered by 8-50V voltage and 4A operating current. The controller allows you to control the movement of the engine with up to 9 different resolutions. Configuration via SPI interface. Pololu 3730