10 Pcs 1/6" Slot PCB Photo Interrupter Slotted Optical Switch HY301-21

SUNKEE 10 x TCRT5000L TCRT5000 Reflective Optical Sensor with Transistor Output Infrared 950mm 5V 3A

OSOYOO 10PCS IR Infrared Obstacle Avoidance Sensor Module for Arduino Smart Car Robot

Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead W/ 1m Cable and Connector for 3D Printer/CNC

Elegoo For Arduino Nano V3.0, Nano board CH340/ATmega328P without USB cable, compatible with Arduino Nano V3.0 (Nano x 3 without cable)

Haitronic 120pcs 20cm length Jumper Wires/dupont cable Multicolored(10 color) 40pin M to F, 40pin M to M, 40pin F to F for Breadboard/Arduino based/DIY/raspberry Pi 2 3/Robot Ribbon Cables Ki

Elegoo EL-CB-001 UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable for Arduino

AIRSUNNY three Legs 5 pairs Infrared Diode LED IR Emission and Receiver

J-Deal® 10x Pcs SG90 Micro Servo Motor 9G RC Robot Helicopter Airplane Boat Controls

HC-020K Double Speed Measuring Module with Photoelectric Encoders For Experiment

Gikfun USB Nano V3.0 ATmega328 CH340G 5V 16M Micro-controller board For Arduino (Pack of 3pcs) EK1620x3