1 X WYHP Mini Laser Dot Diode Module Head WL Red 650nm 6mm 3V 5mW Pack of 10pcs

WAYLLSHINE® 12 Pcs/1 Dozen 2 x 1.5V AA Battery Holder Case Box Black Wire Leads

ZJchao 3V 1A AC Adapter to DC Power Adapter 5.5/2.1mm

Honbay 10pcs 2AA Battery Holder Storage Case with Wires and On/Off Switch

DSD TECH HC-05 Bluetooth Serial Pass-through Module Wireless Serial Communication with Button for Arduino

Mini Nano V3.0 ATmega328P Microcontroller Board USB Cable for Arduino

AixiZ aluminum mount and heat sink for 12mm modules

uxcell a12071000ux0902 5 Pcs SPST On Off Black Snap in Boat Rocker Switch AC 250V/16A 125V/16A, Pack of 5

HiLetgo 20pcs Clear 5mm Head Phototransistor Photosensitive Light Sensitive Sensors

Adafruit Mini Pan-Tilt Kit - Assembled with Micro Servos

CO-RODE Tact Button Switch 6x6x5mm Pack of 100