650nm 6mm 5V DC Mini Laser Dot Diode Module
650nm 6mm 5V DC Mini Laser Dot Diode Module
Compact Laser Source Precision Light Beam Ideal for DIY Electronics
The 650nm 5V Mini Laser Dot Diode Module is a small laser device that produces a bright red laser dot. It is commonly used in electronics projects, alignment tools, laser pointers, positioning systems, and robotics.
This module typically contains a laser diode, current-limiting circuit, and focusing lens inside a small 6 mm brass housing, making it easy to integrate into DIY circuits.
Infographic Overview
Basic Specifications
Feature | Details |
Wavelength | 650 nm (Red Laser) |
Operating Voltage | 3V 5V DC |
Operating Current~6 mm | |
Output Type | Laser Dot |
Beam Distance | Up to several meters |
Main Components
Component | Description |
Laser Diode | Generates the laser light |
Focusing Lens | Concentrates the beam into a dot |
Driver Circuit | Regulates current for stable operation |
Brass Housing | Protects internal components |
Power Wires | Red (+) and Black () leads |
Working Principle
The module works based on stimulated emission of radiation in a semiconductor laser diode.
Step-by-Step Operation
1s through the laser diode semiconductor junction.3 The diode emits coherent light at 650 nm wavelength.4 The internal lens focuses the light into a thin laser beam.
Laser Module Structure
Mini Laser Module Laser Lens Laser Diode Driver Circuit'trolled using:
Arduino Uno
Arduino Nano
ESP32
Raspberry Pi
Usually controlled through a transistor or relay module.
Advantages
Small and lightweight design Bright and focused beam Low power consumption Easy to integrate into circuits Long operational life
Safety Notes
Avoid direct exposure of the laser beam to eyes Do not point the laser at reflective surfaces Use appropriate power supply (35V)
Example DIY Project
Laser Tripwire Alarm System
Components
650nm Laser Diode Module
LDR (Light Dependent Resistor)
Arduino Uno When someone blocks the beam light intensity changes Arduino triggers an alarm b