Laser Module Board HW-493

DESCRIPTION:

The Laser Emitter Module incorporates a small red laser diode similar to what you find in a laser pen.

EY FEATURES OF LASER EMITTER MODULE:

• 650nm Red Output
• Brass construction with acrylic lens
• Built-in current limiting resistor
• 5V Operation

You can use this laser emitter to torture your cat, put red dots on the ceiling, or combine it with a light-sensitive receiver to create an optical intrusion alarm or communication link.  Remember to never look straight at any laser diode while it is operating or point it at someone’s eyes, as eye damage is possible even with a relatively wimpy type like this one.

To test, connect up to 5V and ground.  The device includes a built-in 91-ohm current limiting resistor and draws about 30mA.  It can be powered directly off some MCU pins or an additional series current limiting resistor can be added to reduce the drive current.

Module Connections:

There is a 3-pin header on the assembly for making connections.

1 x 3 Header 

• ‘-‘ = Ground
• Center pin = Not typically used.  Connects to 5V pin via 10K resistors so can be used to sense whether diode has power.
• S = 5V (typical)

Package:

1xHW-493 Leser Module.