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5V 3-Pin Laser Diode Module – Red Laser for Arduino and DIY Projects

The 5V 3-Pin Laser Module is a compact, low-power red laser emitter designed for Arduino, Raspberry Pi, robotics, and general electronics projects. Operating at 5 volts, this module is easy to integrate with most microcontrollers and features a 3-pin interface for simple control and connectivity.

🔧 Key Features

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  Operating Voltage: 5V DC

  
  


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  Laser Color: Red (wavelength typically ~650nm)

  
  


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  3-Pin Interface:

  
  
  
  
  
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    VCC – Power (5V)

    
    
  
  
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    GND – Ground

    
    
  
  
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    SIG – Signal control (ON/OFF via microcontroller)

    
    
  
  
  
  


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  Control Type: Digital HIGH/LOW to toggle the laser

  
  


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  Laser Range: ~10–50 meters visible (for alignment or pointing)

  
  


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  Power Output: <5mW (Class IIIa laser – safe for general use with precautions)

  
  

📐 Specifications

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  Dimensions: Approx. 24 × 15 × 8 mm

  
  


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  Mounting Holes: Available on some versions for fixed installations

  
  


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  Weight: Very lightweight (~3g)

  
  


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  Beam Diameter: ~1mm at 10m distance

  
  


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  Module Type: Laser emitter with control circuit built-in

  
  

🛠️ Applications

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  Line or point laser for alignment or positioning

  
  


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  Targeting or aiming systems in robotics

  
  


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  DIY laser tripwires and security systems

  
  


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  Laser-based communication or signaling

  
  


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  Visual indicators in school or hobby projects

  
  

✅ Advantages

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  Plug-and-play with Arduino, ESP32, STM32, etc.

  
  


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  Simple ON/OFF control via digital output pin

  
  


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  Compact size for embedded designs

  
  


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  Long range visibility indoors and at night

  
  


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  Low current consumption (~30–50mA)

  
  

⚠️ Safety Note: Do not point the laser at eyes or reflective surfaces. Use responsibly and keep away from children without supervision.