Laser Sensor Module 650nm 6mm Red Laser Dot Diode Copper Head – diymore
Create a Laser Driver From an Arduino Board. : 6 Steps (with Pictures) - Instructables
10pcs 3v-5v 650nm Adjustable Mini Laser Sensor Module 5mw Arduino Red Laser Spot Diode Copper Head Level Meter Ground Wire Meter - Sensors - AliExpress
arduino - Laser diode driven by a voltage source seems OK - Electrical Engineering Stack Exchange
Amazon.com: HiLetgo 5pcs DC 5V Laser Transmitter Module Wave Length 650 nm for Arduino PIC AVR : Industrial & Scientific