WINGONEER 5Pcs Hall Effect KY-003 Magnetic Sensor Module DC 5V for PIC AVR Smart Cars

SunFounder Switch Hall Sensor Module for Arduino and Raspberry Pi

Ceramic Disc Magnets, 0.472" Diameter, 0.197" Thick (Pack of 40)

Tech Express 20Pcs A3144 A3144E OH3144E Hall Effect Sensor, by

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

ELEGOO for Arduino Nano V3.0, Nano Board CH340/ATmega328P Without USB Cable, Compatible with Arduino Nano V3.0 (Nano x 3 Without Cable)

SainSmart Hall Effect Sensor Switch Magnetic Detector for Arduino UNO R3 Motor

ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino

Cylewet 10Pcs Reed Switch Normally Open (N/O) Magnetic Induction Switch Electromagnetic for Arduino (Pack of 10) CYT1004

ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable for Arduino RoHS Compliant

Elegoo MEGA 2560 R3 Board ATmega2560 ATMEGA16U2 + USB Cable for Arduino RoHS Compliant