Hybrid bipolar stepper motor eith integrated 18cm (7″) threaded rod as its output shaft, turning it into a linear actuator capable of precision open-loop positioning. The motor has a 1.8° step angle (200 steps/revolution) and each phase draws 1.7A at 2.8V, allowing for a holding torque of 3.7kg-cm (51 oz-in). Pololu 2689

The FS90R is a micro servo that has been built by FEETECH (formerly known as Fitec) specifically for continuous rotation, offering an inexpensive and easy way to get your small turret spinning or miniature robot moving, especially when paired with our 60×8mm wheels designed specifically for this servo. Pololu 2820

This discrete MOSFET H-bridge motor driver enables bidirectional control of one high-power DC brushed motor. The small 1.3″ × 0.8″ board supports a wide 6.5 V to 30 V voltage range and is efficient enough to deliver a continuous 17 A without a heat sink.

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V with an available output current of around 9 A.

The compact (0.4″ × 0.5″) D24V5F9 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 9 V while allowing for a maximum output current of 500 mA. Pololu 2845

The compact (0.4″ × 0.5″) D24V5F2 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 2.5 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 80% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Kit for building a minisumo robot on a crawler chassis. It has a bulldozer, control board and a set of caterpillars. Robot version for self-assembly, requires additional motors, Arduino controller and four AA batteries. Pololu 2509

The very small step-down 6 V, 2.5 A synchronous inverter can be supplied with voltage up to 36 V, dimensions: 17.8 mm x 17.8 mm. Pololu 2859

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.4 A and features reverse voltage protection.

This discrete MOSFET H-bridge motor driver enables bidirectional control of one high-power DC brushed motor. The small 1.3×0.8″ board supports a wide 6.5V to 40V voltage range and is efficient enough to deliver a continuous 13A without a heat sink. Driver includes reverse-voltage protection along with basic current sensing and current limiting functionality. Pololu 2992

This black polyurethane scooter/skate wheel measures 70 mm in diameter and 25 mm in width and works with standard 608 bearings as well as our Aluminum Scooter Wheel Adapters, which allow these wheels to be used with an assortment of motors. Pololu 3272

This black polyurethane scooter/skate wheel measures 84 mm in diameter and 24 mm in width and works with standard 608 bearings as well as our Aluminum Scooter Wheel Adapters, which allow these wheels to be used with an assortment of motors. Pololu 3275

A set of magnetic encoders for the Romi Chassis chassis. With their help, we can measure the distance traveled by our mobile robot or control the engine speed. Pololu 3542

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 3.3 V with an available output current of around 15 A. Pololu 2880

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 4442

Step-Up converter U3V70F7 with an output voltage of 7.5V, an input voltage from 2.9 to 7.5 V and a maximum output current of 10 A. Pololu 2893

The medium-duty linear actuator can lift loads up to 100 kgf (1000 N) and withstand a static load of up to 450 kgf (4500 N), the nominal extension of the actuator is 10 cm. The power supply voltage is 12 V. This version of the actuator has a built-in potentiometer for reading the position of the actuator or, for example, feedback implementations. Pololu 3612

A medium-duty linear cylinder, it can lift loads up to 100 kgf (1000 N) and withstand a static load of up to 450 kgf (4500 N), the nominal extension of the actuator is 25 cm. The power supply voltage is 12 V. This version of the actuator has a built-in potentiometer for reading the position of the actuator or, for example, feedback implementations. Pololu 3618

Motor with 25 mm diameter and 50 mm length, 20,4:1 metal gear, 12 V operating voltage, 0,2 A to 2,1 A power consumption, 370 RPM speed and 3 maximum torque. Pololu 3227