TB67S249FTG Stepper Motor Driver Compact Carrier (Header Pins Soldered)

The QTRXL-MD-01A-S reflective sensor with an analog output enables precise detection of lines and objects. Thanks to its extended range and high sensitivity, it is used in robotic and automation projects. The JST SH connector allows easy integration, and the wide supply voltage range enables flexible use in 3.3 V and 5 V systems.

3-AA Battery Holder

3-AAA Battery Holder

Holder for 4 AA R6 batteries with a flap and a switch is an ideal solution for people who need a simple and reliable way to connect AA batteries to obtain a voltage of 6 V

Solarbotics SW-B BLACK Servo Wheel with Encoder Stripes, Silicone Tire

Machine Screw: M3, 25mm Length, Phillips (25-pack)

The RoboClaw Solo motor controllers from Basicmicro (formerly Ion Motion Control) can control a single brushed DC motor using USB serial, TTL serial, RC, or analog inputs. An integrated quadrature decoder make it easy to create a closed-loop speed control system. 

15:1 Micro Metal Gearmotor. Pololu 4780

15:1 Micro Metal Gearmotor. Pololu 4784

Miniature MP electric motor (6 VDC / 40 mA) in a metal casing with a 30: 1 gearbox, with a half shaft D with a diameter of 3 mm.

A small, low-power motor with a 5:1 metal gear, 6 V operating voltage, 0.02 A to 0.36 A power consumption, 2500 RPM speed and a maximum torque of 0.05 kg * cm. Pololu 1100