Yeeco DC 3-6V 100RPM Torque Mini Speed Reduction Motor with Metal Gearwheel Replacement 10mm Shaft for DIY RC Car Robot Model Engine Toys Parts

100 3/8" Inch Chrome Steel Bearing Balls G25

uxcell 683ZZ Ball Bearing 3mm x 7mm x 3mm Double Shielded 683-2Z Deep Groove Bearings, Carbon Steel Pack of 20

Miuzei 10 pcs SG90 9G Servo Motor Kit for RC Robot Arm Helicopter Airplane Remote Control

RioRand RR-PWM-15V Low Voltage Dc 1.8v 3v 5v 6v 12v 2a Motor Speed Controller Pwm,

80Pcs Plastic DIY Robot Gear Kit Gearbox Motor Gear Set for DIY Car Robot

LAFVIN Nano V3.0, Nano Board ATmega328P 5V 16M Micro-Controller Board for Arduino (Nano x 3 with USB Cable)

Magic&Shell 2-Pack 3mm Flange Shaft Coupling High Hardness Metal Axis Bearing Fittings DIY Model Accessory Rigid Flange Guide Shaft Coupler Motor Connector

Pololu 1083 Universal Aluminum MOUNTING HUB for 6mm Shaft Pair, 4-40 Holes

eBoot 30 Pieces Photoresistor Photo Light Sensitive Resistor Light Dependent Resistor 5 mm GM5539 5539

Qunqi L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper For Arduino