10 pcs New A3144 A3144E OH3144E 3144 Hall Effect Sensor

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

SunFounder Switch Hall Sensor Module for Arduino and Raspberry Pi

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

10Pcs Reed Switch 10W Low Voltage Current Normally Open Magnetic Switch 2x14mm

uxcell 10 Pcs A3144 3 Terminal Sensitive Hall Effect Switch Sensor

Longruner Mini Nano V3.0 ATmega328P 5V 16M Micro Controller Board Module for Arduino (10Pcs)

L7805CV L7805 Positive Voltage Regulator Output 5v TO-220 Package, 20 Pieces

Gikfun 5mm 940nm LEDs Infrared Emitter and IR Receiver Diode for Arduino (Pack of 20pcs) EK8443

Remington Industries 28SNSP.25 28 AWG Magnet Wire, Enameled Copper Wire, 4 oz, 0.0135" Diameter, 507' Length, Red

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