This NEMA 17-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in). Pololu 2267

This tiny, cylindrical gearmotor consists of a coreless brushed DC motor and a 700:1 plastic planetary gearbox. The entire assembly has a diameter of just 6 mm (0.24″) and an extremely light weight of 1.3 g (0.046 oz), making it a great actuator for miniature robots and very small mechanisms.

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

This encoders are designed for DFRobot 3PA and AWD Rovers. It can give you the rotation degree of the wheels. Encoder uses non-contact method to convert the angular displacement signals. Best fit with Micro DC Geared Motor. SEN0038

SparkFun micro:bot kit v2.0 - is the perfect controller for learning how to build and program robots. The combination of micro:bit with the SparkFun moto:bot carrier board creates an efficient, cheap robotics platform with Qwiic support for robot enthusiasts of all ages. With SparkFun micro:bot, you can quickly create simple robots. SparkFun kit-16275

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

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

Pololu high power miniature motor with carbon brushes. 150:1 gear motor, shaft speed 220 rpm, torque 1,8kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 3053

These aluminum gearmotor brackets let you securely mount Pololu’s 25D mm metal gearmotors to your project. The brackets are sold in pairs, and each bracket includes two M3 screws for securing the motor to the bracket. Each bracket also features seven mounting holes and twelve mounting slots for M3 or #4-size screws (not included), giving you a variety of mounting options.

Wheel with rubber tire, wheel size 70 x 12 mm. Includes two mounts (for D3 and D4 axes) and a set of screws

Pololu high power miniature motor with carbon brushes. 210:1 gear motor, shaft speed 85 rpm, torque 2.5kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 3054

Pololu Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack)

This gearmotor is a miniature medium-power, 6 V brushed DC motor with a 75.81:1 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. This version also has a 4.5 × 1 mm extended motor shaft.

Key specs at 6 V: 290 RPM and 40 mA with no load, 17 oz-in (1.2 kg-cm) and 0.7 A at stall.

The Insect Bot mini is an easy to assemble robot for young engineers from 6 to 100, ideal for DIY projects, wearable projects and etc. Its body is made up of two 9-gram servos powered by a rechargable 3.7V LiPo battery. Its eyes are an infrared sensor to detect obstacles. DFRobot KIT0051

Matrix module of six reflection sensors for the Zumo robot. The module allows you to easily add line detection or edge detection to the robot. Pololu 1419

The mountings allow the engine to be mounted on the Romi Chassis chassis. The motor is snap-fitted, which facilitates its quick assembly. The fixings are in blue. Pololu 3526

Support ball with fixing, designed for Romi Chassis chassis. Pololu 3534