A set of two 60x8mm black Pololu wheels. Fits D-shaped shaft with a diameter of 3mm. Pololu 1420

A set of two Pololu wheels measuring 43x19 mm in white. Fits D-shaped shaft with a diameter of 3 mm. Pololu 1090

TB67S249FTG stepper motor driver module supplied with 10-47V voltage and working current of 1.7A. The controller allows you to control the motor movement up to 7 different resolutions (up to 1/32 of a step). Pololu 2973

Motor with 20 mm diameter and 44 mm length, 156:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 91 RPM speed and 7.9 kg*cm maximum torque. Pololu 3718

Module with 5 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 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4205

Module with 1 QTR 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 4141

DC-DC step-up/step-down voltage regulator module that stabilizes the output voltage at 6 V with an input voltage range of 2.9 V – 32 V. The circuit automatically increases or decreases the input voltage, allowing it to power devices even when the supply voltage varies significantly. The regulator can deliver up to 2 A output current (when the input voltage is close to the output voltage) and offers a typical 80–90% efficiency, making it suitable for battery-powered systems and embedded projects. Pololu 2575

DC-DC step-up/step-down voltage regulator module with an adjustable output voltage range of 9 V – 30 V and an input voltage range of 2.9 V – 32 V. The circuit automatically boosts or lowers the input voltage, allowing it to power devices even when the supply voltage fluctuates significantly. The regulator can deliver up to 2 A output current, with a typical efficiency of 80–90%, and features an ENABLE pin for low-power operation. Pololu 2573

This compact (0.4″ × 0.5″) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 9 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output.

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

Single-channel brushed DC motor driver based on the MPQ6612A chip, enabling bidirectional motor control with a supply voltage of 4-40 V and up to 4 A continuous current. The module offers motor current sensing, active current limiting, overcurrent and thermal protection, and supports PWM control up to 200 kHz. The carrier board includes factory-soldered connectors, allowing the module to be used without additional soldering. Pololu 5286

A set of two Polol wheels with a dimension of 80x10mm in black with interchangeable sleeves for 3mm and 4mm shafts. Polol 3690

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

Compact Pololu 5292 current sensor based on the ACS37220 IC, designed for measuring currents up to ±100 A at a 5 V supply voltage in applications requiring galvanic isolation and an analog output. Pololu 5292

Module with 2 QTRX type optocoupler with analog 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 4402

Module with 3 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 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4243

Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5291