Adafruit
Cross Laser Diode - 5mW 650nm
Best laser module for DIY alignment and precision targeting projects.
Enhance your electronics projects with this specialized Cross Laser Diode module from Adafruit. Emitting a bright 5mW, 650nm red wavelength, this component features an integrated lens that precisely shapes the beam into a clear cross pattern, ideal for guidance or targeting applications. It is designed for low-voltage compatibility, operating efficiently from 2.8V to 5.2V DC, making integration simple for many embedded systems. The resulting cross beam spreads about 60° in both directions, offering a well-defined shape with sharp cutoffs for clear visibility. This module includes an integrated driver circuit for straightforward power connection.
$18.57
Owner Satisfaction
4.6
/ 5
Category Rank
235
/ 587
#235 in Diodes
Price vs Category Average
-73%
Below average
Wavelength
650
/ nm
Who it's for
- Makers needing precise alignment for DIY projects
- Electronics hobbyists integrating lasers with microcontrollers
- Educators prioritizing safety in classroom environments
Who should skip it
- Users working in bright or outdoor settings
- Engineers requiring adjustable focus or rugged components
- Professionals needing high-contrast visibility for precision tasks
Performance breakdown
Beam Precision
Integrated lens produces a sharp, well-defined cross pattern for accurate targeting.
Integration Ease
Built-in driver circuit makes connecting to standard microcontrollers incredibly straightforward.
Voltage Versatility
Wide operating range ensures compatibility with most common embedded power supplies.
Visibility Range
The 5mW output provides clear visibility for indoor guidance and alignment tasks.
Build Compactness
Small form factor fits easily into tight enclosures and custom project housings.
Thermal Stability
Reliable performance within standard indoor temperature ranges for consistent daily operation.
Key Specs
Wavelength
650nm
Output Power
5mW (Class IIIa)
Input Voltage
2.8 - 5.2V DC
Max Current Draw
25mA
Operating Temperature
-10°C to 40°C
Diameter
10.11mm
Length
32.82mm
Wire Length
100mm
Features
- Integrated lens creates a distinct cross pattern
- Class IIIa 5mW output power
- 650nm red wavelength light emission
- Sharp cutoff for well-defined cross shape
- Operates reliably from 2.8V to 5.2V DC
- Integrated driver circuit simplifies setup
- Beam spreads approximately 60° in both directions
What customers say
Customers overwhelmingly praise the Adafruit Cross Laser Diode for its exceptional reliability and ease of integration. The component consistently delivers a crisp, clear 650nm red cross projection, making it ideal for alignment and visual indicator projects. Reviewers highlight the sharpness of the pattern, which remains distinct even at a distance. Its performance exactly matches expectations, supported by Adafruit's quality documentation, which aids beginners. While the 5mW output is sufficient for indoor use, some users desire more brightness for well lit areas. Overall, this diode offers fantastic value and dependable precision, establishing it as a staple for DIY alignment tasks.
Know before you buy
While the diode operates within the 2.8V to 5.2V range, it draws up to 25mA of current. It is safer to power it from a dedicated 5V rail or through a transistor to avoid overloading your microcontroller's GPIO pins.
The beam spreads at approximately 60° in both directions. This means the cross will grow wider as the distance from the target increases, making it best suited for short-to-medium range alignment or targeting tasks.
No, the module includes an integrated driver circuit. You can connect it directly to your power source without needing additional components to regulate the current.
This is a Class IIIa laser with a 5mW output. While it is standard for hobbyist projects, you should never look directly into the beam or point it at reflective surfaces, cameras, or people's eyes.
The module is 10.11mm in diameter and 32.82mm in length. You will need to account for these dimensions when designing a custom housing or mounting bracket for your project.
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