Black wheels made of polyurethane with a diameter of 200 mm and a thickness of 30 mm. Pololu 3283

Miniature, 12V brush DC motor with metal gear and 15.25:1 gear ratio. It has a cross section of 10 × 12 mm, and the D-shaped output shaft with a length of 9 mm and a diameter of 3 mm. Pololu 4786

This item is a set of three plastic rollers, a 1″-diameter plastic ball, and a retaining clip that can be used on the front or back ball caster locations on the Romi chassis base plate. The ball is white, and all other parts are pink. It is included as part of the pink Romi Chassis Kit.

Pololu 3531

Module with 15 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4215

Step-Up converter U3V70F6 with an output voltage of 6 V, an input voltage from 2.9 to 6 V and a maximum output current of 10 A. Pololu 2892

DC-DC Step-up converter module based on the U3V70F9 system. Input voltage 2.9-9V, output voltage 9V, maximum current 10A. Two mounting holes. Polol 2894

This board is a simple carrier of Broadcom’s bidirectional ±40A ACHS-7124 Hall effect-based linear current sensor, which offers a low-resistance (~0.7 mΩ) current path and electrical isolation up to 3 kV RMS. Pololu 4033

Small, metal support ball, 1/2" diameter (approx. 12.7 mm). It can be used as a support element in a two-wheeled mobile robot. Pololu 953

DC-DC Step-up converter module based on the U3V70F12 system. Input voltage 2.9-12V, output voltage 12V, maximum current 10A. Two mounting holes. Pololu 2895

Aluminum Standoff: 3/4" Length, 4-40 Thread, M-F (4-Pack)

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 150.58:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.

DC-DC Step-Down converter module. It has an input voltage from 5 to 45 V, an output voltage of 5 V and a maximum output current of up to 3.4 A. Pololu 4892

TB67S128FTG stepper motor driver module powered by 6.5-44V voltage and 2.1A operating current. The controller allows you to control the movement of the engine with up to 8 different resolutions (up to 1/128 step). Pololu 2998

Module with a stepper motor driver based on the DRV8434 system. It allows you to power a bipolar motor with a current of up to 1.2 A per phase and a voltage from 4.5 V to 48 V. Pololu 3763

Motor with 25 mm diameter and 69 mm length, 99:1 metal gear, 6 V operating voltage, 0,55 A to 6,5 A power consumption, 97 RPM speed, 15 maximum torque and 48 CPR encoder. Pololu 4807

Pololu high power miniature motor with carbon brushes. 100:1 gear motor, shaft speed is 330 rpm, torque 1.3 kg*cm. Pololu 3041

A set of two 80x10mm black Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1430

Motor with 37 mm diameter and 52 mm length, 19:1 metal gear, 12 V operating voltage, 0,2 A to 5,5 A power consumption, 530 RPM speed and 8,5 maximum torque. Pololu 4741

Module with ToF sensor VL53L7CX with an output in the form of a matrix of 64 pixels (8x8) and a range of up to 3.5 m. It communicates via the I2C interface. Pololu 3418

Pololu high power miniature motor with carbon brushes. 100:1 gear motor, shaft speed is 330 rpm, torque 1.6 kg*cm (0.16 Nm). Pololu 3065