KY-008 650NM 5V Laser Module

KY-008 650NM 5V Laser Module is a compact and highly efficient transmitter designed to emit a concentrated beam of red light for various electronic sensing and signaling projects. This module operates effectively at a 5V input, making it perfectly compatible with popular microcontrollers like Arduino and Raspberry Pi. Consequently, hobbyists and engineers can easily integrate laser-based detection systems into their designs with minimal external circuitry. The device utilizes a high-quality 650nm laser diode that produces a visible red dot over significant distances. Furthermore, the simple three-pin header interface ensures a rapid setup for developers. Therefore, you should choose the KY-008 module whenever your project requires a precise, low-power light source for optical experiments or security triggers.

Key Features:

• High Visibility: The module emits a bright, 650nm wavelength red light that remains clearly visible even in moderately lit environments.
• Wide Compatibility: Designed specifically for 5V logic systems, it facilitates direct connection to microcontroller GPIO pins.
• Plug-and-Play Design: It features a standard 3-pin header which simplifies the wiring process and reduces assembly time.
• Compact Form Factor: The small PCB footprint allows users to mount the laser in tight spaces or portable handheld devices.
• Adjustable Focus: Many versions include a threaded brass head that users can rotate to fine-tune the beam diameter for specific distances.

Technical Specifications:

• Operating Voltage: 5 V_DC
• Wavelength: 650 nm (Visible Red)
• Output Power: ≈ 5 mW
• Operating Current: ≤ 40 mA
• Operating Temperature: −10°C to +40°C
• Beam Shape: Dot (Point)

Mechanical Specifications:

• Housing Material: Copper/Brass diode casing on a standard FR-4 PCB carrier.
• Mounting Type: Through-hole pin header.
• PCB Color: Typically Black or Blue.
• Durability: Rigid PCB construction provides stability for the laser diode during operation.

Dimensions:

• Total Length: ≈ 24 mm
• Total Width: ≈ 15 mm
• Module Height: ≈ 9 mm
• Weight: ≈ 2.2 g (Extremely lightweight for drone or robotic mounting)

Pinout and Wiring:

• Pin S (Signal): Connect this pin to a digital output pin on your microcontroller to toggle the laser on and off.
• Pin Middle (VCC): Connect to the +5V power supply rail.
• Pin – (Ground): Connect to the common circuit ground (GND).
• Safety Note: However, you must avoid direct eye exposure to the laser beam at all times to prevent permanent retinal damage.

Datasheet Reference:

• Download KY-008 Laser Module Datasheet

Commonly Used in:

• Arduino Learning Kits: It serves as a fundamental component for teaching students about optical sensors and light-dependent resistors.
• DIY Laser Security Systems: Engineers often use it to create “tripwire” alarms across doorways or perimeters.
• Robotics: Provides a visual heading indicator or a low-cost alignment tool for autonomous rovers.

Applications:

• Optical Communication: Establishing a basic line-of-sight data link between two distant points.
• Targeting Systems: Adding a visible aiming point for educational physics projects or non-lethal toy launchers.
• Distance Measurement: Working in conjunction with a camera or sensor to calculate proximity via triangulation.
• Light Effect Shows: Creating simple patterns or visual displays in controlled darkened environments.

Equivalent Models:

• Generic 650nm 5V Laser Diode: A standalone 2-pin diode that functions similarly but lacks the convenient PCB header interface.
• AD-008 Laser Module: A manufacturer-specific variant that shares the same electrical characteristics and pinout as the KY-008.
• Keyes Laser Module: In short, this is the branded version of the same hardware found in many sensor expansion packs.

Package Includes:

• 1 x KY-008 650NM 5V Laser Module